'06 yz450 forks swapped to an '05 yz125

Edited Date/Time 12/20/2021 1:34am
Will these bolt right up? I just happened upon an 8hr '06 yz450 and want to upgrade my 125 forks. I was curious if there is anything special I need to do?
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jk367
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10/14/2016 7:43pm
I was wondering the same with an 04 yz125?
10/14/2016 8:15pm
Did you try googling? There is a ton of info about it on thumpertalk and on here.

I'm in the middle of putting 2008 yz250 forks on my 02 yz125 and the measurements for the steering stem are actually identical to the stock so I went ahead and had new bearings pressed on to the stem and will be using that set up when my frame gets back from the powder coater.
loftyair
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10/14/2016 8:26pm
Stock springs and dampening will be very heavy stock.

The Shop

10/14/2016 8:29pm
First set of braking bumps that you hit will make your head feel like it split in half. Unless you about 200lbs.
10/15/2016 1:41am
First set of braking bumps that you hit will make your head feel like it split in half. Unless you about 200lbs.
I am every bit of 200lbs lol
10/15/2016 5:00am
First set of braking bumps that you hit will make your head feel like it split in half. Unless you about 200lbs.
I am every bit of 200lbs lol
Seriously though, slap them on and give it a try before you do anything.
Radical
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10/16/2016 4:24am
I just did the upgrade on my 2005 YZ125. I have notes on what all the changes are from year to year for the YZ125 and YZ250 2 strokes. Once I organize my notes a little better I'll post an article.

From 2006 to 2005, it's pretty simple. You can use your existing brakes, spacers, etc...
You can use any triple clamps from 2006+ or you can actually keep your 2005. More below.

The Triple clamps from 2006+ mount the forks 2mm (.080in) further apart.
The wheel spacers (the left one is the one that matters) are the same part numbers for 2005 and 2006.

The lugs on the 2006 forks are each offset 1mm towards the center of the wheel so that you can use the same wheel and spacers as 2005. This matches the 2006+ triple clamps being wider.

If you keep your 2005 Triple clamps, and simply swap out the forks, your front wheel will be 1mm off center toward the right side. It's .040 in, and I didn't notice the wheel being slightly off centered on the track.

If you're keeping the 2005 clamps and want the wheel centered, you'll need to either grind or machine 1mm off of the left wheel spacer, or you can dish your rim instead (loosen all of the spokes on the right side of the wheel slightly, then tighten all of the spokes on the left by the same amount). Machining the spacer is a better solution. The right spacer does not need to be modified.

If you swap out the triple clamps, anything 2006+ will work. I believe they're all the exact same part number.
If you do, you'll need to replace your front number plate. 2006+ are mounted different and they aren't compatible with 2005. You may also need a new front fender. I don't know if the 2006 number plate is compatible with a 2005 fender.

The brakes and the fork guards are the same for 2006.

FYI: I bought 2010 triple clamps but haven't installed them yet (I still need to find some handlebar mounts).
I've been riding and racing with the wheel 1mm off centered, and for me, it is not even slightly noticeable. When I find a deal on bar mounts, I'll swap out the triple clamps. Until then, I'm riding with the 2005 triples.

Be careful with the articles on doing the conversion. There'a s lot of misinformation out there. One article says that you can use the 2006+ upper triple clamp with your 2005 lower triple clamp. This is completely wrong and I can't believe it actually worked. You can't have the upper clamp spaced 2 mm wider than the lower. Your forks won't be parallel and they'll bind as you ride.

The rest of the confusion is because all SSS forks are not interchangeable, and the 2 strokes and 4 strokes got some of the changes in different years. In 2008 or 2009, the lugs changed completely and you need a new axle, spacers, and fork guards (Your left 2005 spacer remains compatible but heavier than the new one). The brakes, brake mounts and cable routing changed in 2008 I believe. So, there are 3 or 4 different SSS forks. Some of the misinformation is just because of not knowing all of the changes.

For 2006, the information above is correct. I'll post my notes on doing the upgrade from any year forks in the next couple of weeks.

I believe the upgrade is worth it!

I hope this helps.
Enjoy!
7
Radical
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10/16/2016 4:40am
jk367 wrote:
I was wondering the same with an 04 yz125?
For upgrading a 2004, you'll need new fork guards, brake line brackets, brake line and possibly brakes as well. I'm not sure if the 2006+ triple clamps are compatible with the steel frame. You may need to press out your steering stem and press it into the new triple clamps.

Just like upgrading the 2005, you should be able to just keep your 2004 triple clamps, and mill 1mm off of your left wheel spacer to re-center the wheel.
Tumblin
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10/16/2016 6:34am
Nice work Radical, I also did an '06YZ250F to '05 YZ125 swap. I just left the stock axle hang a silly millimeter as I'm pondering throwing on the '06 Applied Triples in 24mm offset I still have.
I will say even for my 180# frame the 250's still going to need some more valve work to be called a success.
10/16/2016 7:25am
Radical wrote:
I just did the upgrade on my 2005 YZ125. I have notes on what all the changes are from year to year for the YZ125 and...
I just did the upgrade on my 2005 YZ125. I have notes on what all the changes are from year to year for the YZ125 and YZ250 2 strokes. Once I organize my notes a little better I'll post an article.

From 2006 to 2005, it's pretty simple. You can use your existing brakes, spacers, etc...
You can use any triple clamps from 2006+ or you can actually keep your 2005. More below.

The Triple clamps from 2006+ mount the forks 2mm (.080in) further apart.
The wheel spacers (the left one is the one that matters) are the same part numbers for 2005 and 2006.

The lugs on the 2006 forks are each offset 1mm towards the center of the wheel so that you can use the same wheel and spacers as 2005. This matches the 2006+ triple clamps being wider.

If you keep your 2005 Triple clamps, and simply swap out the forks, your front wheel will be 1mm off center toward the right side. It's .040 in, and I didn't notice the wheel being slightly off centered on the track.

If you're keeping the 2005 clamps and want the wheel centered, you'll need to either grind or machine 1mm off of the left wheel spacer, or you can dish your rim instead (loosen all of the spokes on the right side of the wheel slightly, then tighten all of the spokes on the left by the same amount). Machining the spacer is a better solution. The right spacer does not need to be modified.

If you swap out the triple clamps, anything 2006+ will work. I believe they're all the exact same part number.
If you do, you'll need to replace your front number plate. 2006+ are mounted different and they aren't compatible with 2005. You may also need a new front fender. I don't know if the 2006 number plate is compatible with a 2005 fender.

The brakes and the fork guards are the same for 2006.

FYI: I bought 2010 triple clamps but haven't installed them yet (I still need to find some handlebar mounts).
I've been riding and racing with the wheel 1mm off centered, and for me, it is not even slightly noticeable. When I find a deal on bar mounts, I'll swap out the triple clamps. Until then, I'm riding with the 2005 triples.

Be careful with the articles on doing the conversion. There'a s lot of misinformation out there. One article says that you can use the 2006+ upper triple clamp with your 2005 lower triple clamp. This is completely wrong and I can't believe it actually worked. You can't have the upper clamp spaced 2 mm wider than the lower. Your forks won't be parallel and they'll bind as you ride.

The rest of the confusion is because all SSS forks are not interchangeable, and the 2 strokes and 4 strokes got some of the changes in different years. In 2008 or 2009, the lugs changed completely and you need a new axle, spacers, and fork guards (Your left 2005 spacer remains compatible but heavier than the new one). The brakes, brake mounts and cable routing changed in 2008 I believe. So, there are 3 or 4 different SSS forks. Some of the misinformation is just because of not knowing all of the changes.

For 2006, the information above is correct. I'll post my notes on doing the upgrade from any year forks in the next couple of weeks.

I believe the upgrade is worth it!

I hope this helps.
Enjoy!
Radical! Thank you so much man! You are one of the people that make Vital an absolute Gem of a place..
It sounds like you need to do a little article with your detailed research. Since I have the '06 bike, would it be best to just completely trade entire front ends(complete triple clamps/stems) to avoid any spacer issues? I am converting the 450 into another snowbike/timbersled so the SSS isn't that important in the snow, you just put super beefy springs in and away you go.
notme
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10/16/2016 9:56am
FWIW, I did an 06 450f fork swap onto an 03 yz250. All I did was a stem swap (03 stem onto 06 triples) and used the complete 06 front assembly. By using the same year wheel/brakes there was no need for spacer changes ect. Im thinking I will need to change the valving as this 03 is for running in the woods. I did find the sss was an improvement though. Also bolted the 06 shock up, same length as the 03.
Radical
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10/16/2016 3:29pm
Radical wrote:
I just did the upgrade on my 2005 YZ125. I have notes on what all the changes are from year to year for the YZ125 and...
I just did the upgrade on my 2005 YZ125. I have notes on what all the changes are from year to year for the YZ125 and YZ250 2 strokes. Once I organize my notes a little better I'll post an article.

From 2006 to 2005, it's pretty simple. You can use your existing brakes, spacers, etc...
You can use any triple clamps from 2006+ or you can actually keep your 2005. More below.

The Triple clamps from 2006+ mount the forks 2mm (.080in) further apart.
The wheel spacers (the left one is the one that matters) are the same part numbers for 2005 and 2006.

The lugs on the 2006 forks are each offset 1mm towards the center of the wheel so that you can use the same wheel and spacers as 2005. This matches the 2006+ triple clamps being wider.

If you keep your 2005 Triple clamps, and simply swap out the forks, your front wheel will be 1mm off center toward the right side. It's .040 in, and I didn't notice the wheel being slightly off centered on the track.

If you're keeping the 2005 clamps and want the wheel centered, you'll need to either grind or machine 1mm off of the left wheel spacer, or you can dish your rim instead (loosen all of the spokes on the right side of the wheel slightly, then tighten all of the spokes on the left by the same amount). Machining the spacer is a better solution. The right spacer does not need to be modified.

If you swap out the triple clamps, anything 2006+ will work. I believe they're all the exact same part number.
If you do, you'll need to replace your front number plate. 2006+ are mounted different and they aren't compatible with 2005. You may also need a new front fender. I don't know if the 2006 number plate is compatible with a 2005 fender.

The brakes and the fork guards are the same for 2006.

FYI: I bought 2010 triple clamps but haven't installed them yet (I still need to find some handlebar mounts).
I've been riding and racing with the wheel 1mm off centered, and for me, it is not even slightly noticeable. When I find a deal on bar mounts, I'll swap out the triple clamps. Until then, I'm riding with the 2005 triples.

Be careful with the articles on doing the conversion. There'a s lot of misinformation out there. One article says that you can use the 2006+ upper triple clamp with your 2005 lower triple clamp. This is completely wrong and I can't believe it actually worked. You can't have the upper clamp spaced 2 mm wider than the lower. Your forks won't be parallel and they'll bind as you ride.

The rest of the confusion is because all SSS forks are not interchangeable, and the 2 strokes and 4 strokes got some of the changes in different years. In 2008 or 2009, the lugs changed completely and you need a new axle, spacers, and fork guards (Your left 2005 spacer remains compatible but heavier than the new one). The brakes, brake mounts and cable routing changed in 2008 I believe. So, there are 3 or 4 different SSS forks. Some of the misinformation is just because of not knowing all of the changes.

For 2006, the information above is correct. I'll post my notes on doing the upgrade from any year forks in the next couple of weeks.

I believe the upgrade is worth it!

I hope this helps.
Enjoy!
Radical! Thank you so much man! You are one of the people that make Vital an absolute Gem of a place.. It sounds like you need...
Radical! Thank you so much man! You are one of the people that make Vital an absolute Gem of a place..
It sounds like you need to do a little article with your detailed research. Since I have the '06 bike, would it be best to just completely trade entire front ends(complete triple clamps/stems) to avoid any spacer issues? I am converting the 450 into another snowbike/timbersled so the SSS isn't that important in the snow, you just put super beefy springs in and away you go.
You're welcome! I'm glad it helps.

The brakes, spacers, cable routing are all the same between years, so swap out what you need to.
If you use the 2006 triples:
The fender off the 450 is the same part number as the 2006 125, so that works.

The only question is whether the triple clamp stems are the same length. If they aren't, you'll need to remove and press the stem from the 125 into the lower 450 triple clamp, and you'll need a new number plate. Part numbers are different for the number plate, but if the stem lengths are the same, the 450 number plate should be compatible.

What you will need to replace are the fork springs. The springs for the 450 are way stiffer than for the 125.
I picked up my pair from RaceTech. At 150lbs I went with the stock spring rate.
Radical
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10/16/2016 7:42pm
Tumblin wrote:
Nice work Radical, I also did an '06YZ250F to '05 YZ125 swap. I just left the stock axle hang a silly millimeter as I'm pondering throwing...
Nice work Radical, I also did an '06YZ250F to '05 YZ125 swap. I just left the stock axle hang a silly millimeter as I'm pondering throwing on the '06 Applied Triples in 24mm offset I still have.
I will say even for my 180# frame the 250's still going to need some more valve work to be called a success.
Thanks!
You probably already know this but just a reminder. If you use the '06 upper triple, you'll need to use an 06 lower.

I know that for the 2 strokes every single part except the springs are identical between the 125 and 250. This goes for every year from 2005 -2015. I don't believe I had info on the 2016.

So, if you're going to spend the money for re-valving that's cool, but stock, the valving is identical between the 125 and 250. I'm not positive about the 250f though, but I suspect it's identical as well. The 450's too.
E-man811
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10/17/2016 9:24am Edited Date/Time 10/17/2016 12:33pm
Regarding clamps.. Consider whether or not you want to change fork offset. YZ125 and YZ250 clamps have been 25mm consistently as far as I know. If you are going to use clamps from YZ450f's and YZ250f's, keep in mind that there are different offsets of either 22mm or 25mm that change on different model years of the 250F and the 450f.

example:
YZ250f offset
Up to 2011 - 25mm
2012-current - 22mm

YZ450f Offset
2006-2009 - 25mm
2010 - 2016 - 22mm
2016 - 2017 - 25mm

Also, The ID of the upper clamp is 2mm smaller (54mm down from 56mm) 201 and up 450f's and (I believe that the change happened in 2013) 2013 and up 250f's. So upper clamps from these years will not fit forks from earlier years. as the OD of the fork's upper is 2mm smaller (from 56 to 54mm) on 2010 and up 450f and 2013 and up 250f SSS forks. I just had an upper clamp machined to fit 2006 fork into it.

I short, in order to use 2006 through 2009 450f SSS forks or 2006 through 2012 250f SSS forks you will need to find the clamps that have the correct upper clamp ID and the correct offset that you want. If you want to make the change to 22mm offset and not machine anything, I"m pretty sure that the only clamp with 22mm offset and 56mm upper ID is the 2012 250f. Otherwise, it looks like you will have to machine the 2010 - 2016 YZ450f clamps. They will be 22mm with 54mm upper ID and 2013-2017 250f clamps will also be 22mm offset with 54mm upper ID. Also consider that the YZF upper clamps added the multiple positions for bar clamps in 2012 I believe.

Just to keep things interesting, there was also a difference in overall fork length between older model forks. The newer forks are a few mm shorter. The change was either from steel frame to aluminum frame or from '05 to the '06+ SSS stuff. There were also a couple changes in lower fork lug and hubs here and there that affect wheel centering and disk / caliper alignment. It's fun (or not) figuring all this out and making it work, but my goodness is it worth the difference to properly valved SSS stuff. It should be easier working from an '05 instead an '01 like mine.

Good luck.

YMMV. Please confirm dimensions of anything that you are going to purchase for this conversion.
Having said all that, I'm super happy with mine on my 2001 steel frame.

Edit: corrected the year upper clamp size went from 56 down 54mm on the 250f and 450. I'm pretty sure it was 2013 that it changed on 250f and 450f was 54mm upper from 2010 and up.
Tracktor
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10/18/2016 9:47am
Pat, I have a set of stock clamps off a 2007/8? YZ250f laying in the shop if you need them. Perfect shape but no stem. Let me know...............
VRR7
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6/7/2019 6:01am
Radical wrote:
I just did the upgrade on my 2005 YZ125. I have notes on what all the changes are from year to year for the YZ125 and...
I just did the upgrade on my 2005 YZ125. I have notes on what all the changes are from year to year for the YZ125 and YZ250 2 strokes. Once I organize my notes a little better I'll post an article.

From 2006 to 2005, it's pretty simple. You can use your existing brakes, spacers, etc...
You can use any triple clamps from 2006+ or you can actually keep your 2005. More below.

The Triple clamps from 2006+ mount the forks 2mm (.080in) further apart.
The wheel spacers (the left one is the one that matters) are the same part numbers for 2005 and 2006.

The lugs on the 2006 forks are each offset 1mm towards the center of the wheel so that you can use the same wheel and spacers as 2005. This matches the 2006+ triple clamps being wider.

If you keep your 2005 Triple clamps, and simply swap out the forks, your front wheel will be 1mm off center toward the right side. It's .040 in, and I didn't notice the wheel being slightly off centered on the track.

If you're keeping the 2005 clamps and want the wheel centered, you'll need to either grind or machine 1mm off of the left wheel spacer, or you can dish your rim instead (loosen all of the spokes on the right side of the wheel slightly, then tighten all of the spokes on the left by the same amount). Machining the spacer is a better solution. The right spacer does not need to be modified.

If you swap out the triple clamps, anything 2006+ will work. I believe they're all the exact same part number.
If you do, you'll need to replace your front number plate. 2006+ are mounted different and they aren't compatible with 2005. You may also need a new front fender. I don't know if the 2006 number plate is compatible with a 2005 fender.

The brakes and the fork guards are the same for 2006.

FYI: I bought 2010 triple clamps but haven't installed them yet (I still need to find some handlebar mounts).
I've been riding and racing with the wheel 1mm off centered, and for me, it is not even slightly noticeable. When I find a deal on bar mounts, I'll swap out the triple clamps. Until then, I'm riding with the 2005 triples.

Be careful with the articles on doing the conversion. There'a s lot of misinformation out there. One article says that you can use the 2006+ upper triple clamp with your 2005 lower triple clamp. This is completely wrong and I can't believe it actually worked. You can't have the upper clamp spaced 2 mm wider than the lower. Your forks won't be parallel and they'll bind as you ride.

The rest of the confusion is because all SSS forks are not interchangeable, and the 2 strokes and 4 strokes got some of the changes in different years. In 2008 or 2009, the lugs changed completely and you need a new axle, spacers, and fork guards (Your left 2005 spacer remains compatible but heavier than the new one). The brakes, brake mounts and cable routing changed in 2008 I believe. So, there are 3 or 4 different SSS forks. Some of the misinformation is just because of not knowing all of the changes.

For 2006, the information above is correct. I'll post my notes on doing the upgrade from any year forks in the next couple of weeks.

I believe the upgrade is worth it!

I hope this helps.
Enjoy!
2006 triple clamp is 2mm wider than the 2005

The left spacer is the same 2005 and 2006

But left and right Spacers 2002 to 2007 are the same ? As per parts -

YAMAHA YZ 125 250 2002-2007 YZF YZ-F 250 450 2002-2006 FRONT WHEEL SPACERS

So if you trim 1mm off the left spacer ( Would align the disk )

Then the Axle will sit 1mm proud on the right hand side of the fork when forks are parallel as the fork lug is free to move on the axle on the right ?

Is that a correct assumption ?
Cali
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6/7/2019 2:00pm
Radical wrote:
I just did the upgrade on my 2005 YZ125. I have notes on what all the changes are from year to year for the YZ125 and...
I just did the upgrade on my 2005 YZ125. I have notes on what all the changes are from year to year for the YZ125 and YZ250 2 strokes. Once I organize my notes a little better I'll post an article.

From 2006 to 2005, it's pretty simple. You can use your existing brakes, spacers, etc...
You can use any triple clamps from 2006+ or you can actually keep your 2005. More below.

The Triple clamps from 2006+ mount the forks 2mm (.080in) further apart.
The wheel spacers (the left one is the one that matters) are the same part numbers for 2005 and 2006.

The lugs on the 2006 forks are each offset 1mm towards the center of the wheel so that you can use the same wheel and spacers as 2005. This matches the 2006+ triple clamps being wider.

If you keep your 2005 Triple clamps, and simply swap out the forks, your front wheel will be 1mm off center toward the right side. It's .040 in, and I didn't notice the wheel being slightly off centered on the track.

If you're keeping the 2005 clamps and want the wheel centered, you'll need to either grind or machine 1mm off of the left wheel spacer, or you can dish your rim instead (loosen all of the spokes on the right side of the wheel slightly, then tighten all of the spokes on the left by the same amount). Machining the spacer is a better solution. The right spacer does not need to be modified.

If you swap out the triple clamps, anything 2006+ will work. I believe they're all the exact same part number.
If you do, you'll need to replace your front number plate. 2006+ are mounted different and they aren't compatible with 2005. You may also need a new front fender. I don't know if the 2006 number plate is compatible with a 2005 fender.

The brakes and the fork guards are the same for 2006.

FYI: I bought 2010 triple clamps but haven't installed them yet (I still need to find some handlebar mounts).
I've been riding and racing with the wheel 1mm off centered, and for me, it is not even slightly noticeable. When I find a deal on bar mounts, I'll swap out the triple clamps. Until then, I'm riding with the 2005 triples.

Be careful with the articles on doing the conversion. There'a s lot of misinformation out there. One article says that you can use the 2006+ upper triple clamp with your 2005 lower triple clamp. This is completely wrong and I can't believe it actually worked. You can't have the upper clamp spaced 2 mm wider than the lower. Your forks won't be parallel and they'll bind as you ride.

The rest of the confusion is because all SSS forks are not interchangeable, and the 2 strokes and 4 strokes got some of the changes in different years. In 2008 or 2009, the lugs changed completely and you need a new axle, spacers, and fork guards (Your left 2005 spacer remains compatible but heavier than the new one). The brakes, brake mounts and cable routing changed in 2008 I believe. So, there are 3 or 4 different SSS forks. Some of the misinformation is just because of not knowing all of the changes.

For 2006, the information above is correct. I'll post my notes on doing the upgrade from any year forks in the next couple of weeks.

I believe the upgrade is worth it!

I hope this helps.
Enjoy!
VRR7 wrote:
2006 triple clamp is 2mm wider than the 2005 The left spacer is the same 2005 and 2006 But left and right Spacers 2002 to 2007...
2006 triple clamp is 2mm wider than the 2005

The left spacer is the same 2005 and 2006

But left and right Spacers 2002 to 2007 are the same ? As per parts -

YAMAHA YZ 125 250 2002-2007 YZF YZ-F 250 450 2002-2006 FRONT WHEEL SPACERS

So if you trim 1mm off the left spacer ( Would align the disk )

Then the Axle will sit 1mm proud on the right hand side of the fork when forks are parallel as the fork lug is free to move on the axle on the right ?

Is that a correct assumption ?
Sounds about right, I can look when I get home. I have a few sets of wheels & axels. Also have a nice set of 2006 YZ450F forks. They are SSS, way better than what my 2005 YZ250 2 stroke had. I’m probably going to throw them on eBay, unless anyone wants to throw an offer out their.
mb60
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6/7/2019 2:49pm
Cali wrote:
Sounds about right, I can look when I get home. I have a few sets of wheels & axels. Also have a nice set of 2006...
Sounds about right, I can look when I get home. I have a few sets of wheels & axels. Also have a nice set of 2006 YZ450F forks. They are SSS, way better than what my 2005 YZ250 2 stroke had. I’m probably going to throw them on eBay, unless anyone wants to throw an offer out their.
Cali,

Not sure you can help but I bought a 2007 YZ 250 that had the forks swapped off either a newer YZ or maybe even YZF newer model. The stock spacers for the 2007 YZ 250 made the axle stick out of the lugs about a inch. I bought a newer axle and spacers and now the newer axle goes in about a half inch to far and does not set flush. Any suggestions on what might be the spacers to make the axle set flush in the lugs ?
Radical
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6/8/2019 4:34pm
Cali wrote:
Sounds about right, I can look when I get home. I have a few sets of wheels & axels. Also have a nice set of 2006...
Sounds about right, I can look when I get home. I have a few sets of wheels & axels. Also have a nice set of 2006 YZ450F forks. They are SSS, way better than what my 2005 YZ250 2 stroke had. I’m probably going to throw them on eBay, unless anyone wants to throw an offer out their.
mb60 wrote:
Cali, Not sure you can help but I bought a 2007 YZ 250 that had the forks swapped off either a newer YZ or maybe even...
Cali,

Not sure you can help but I bought a 2007 YZ 250 that had the forks swapped off either a newer YZ or maybe even YZF newer model. The stock spacers for the 2007 YZ 250 made the axle stick out of the lugs about a inch. I bought a newer axle and spacers and now the newer axle goes in about a half inch to far and does not set flush. Any suggestions on what might be the spacers to make the axle set flush in the lugs ?
Can you post some pictures of all of the parts?
Triple clamps, forks, lugs, spacers, brakes?
Cali
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6/8/2019 5:12pm
Cali wrote:
Sounds about right, I can look when I get home. I have a few sets of wheels & axels. Also have a nice set of 2006...
Sounds about right, I can look when I get home. I have a few sets of wheels & axels. Also have a nice set of 2006 YZ450F forks. They are SSS, way better than what my 2005 YZ250 2 stroke had. I’m probably going to throw them on eBay, unless anyone wants to throw an offer out their.
mb60 wrote:
Cali, Not sure you can help but I bought a 2007 YZ 250 that had the forks swapped off either a newer YZ or maybe even...
Cali,

Not sure you can help but I bought a 2007 YZ 250 that had the forks swapped off either a newer YZ or maybe even YZF newer model. The stock spacers for the 2007 YZ 250 made the axle stick out of the lugs about a inch. I bought a newer axle and spacers and now the newer axle goes in about a half inch to far and does not set flush. Any suggestions on what might be the spacers to make the axle set flush in the lugs ?
Radical wrote:
Can you post some pictures of all of the parts?
Triple clamps, forks, lugs, spacers, brakes?
Yeah, I will tomorrow
Cali
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6/8/2019 5:16pm
Cali wrote:
Sounds about right, I can look when I get home. I have a few sets of wheels & axels. Also have a nice set of 2006...
Sounds about right, I can look when I get home. I have a few sets of wheels & axels. Also have a nice set of 2006 YZ450F forks. They are SSS, way better than what my 2005 YZ250 2 stroke had. I’m probably going to throw them on eBay, unless anyone wants to throw an offer out their.
mb60 wrote:
Cali, Not sure you can help but I bought a 2007 YZ 250 that had the forks swapped off either a newer YZ or maybe even...
Cali,

Not sure you can help but I bought a 2007 YZ 250 that had the forks swapped off either a newer YZ or maybe even YZF newer model. The stock spacers for the 2007 YZ 250 made the axle stick out of the lugs about a inch. I bought a newer axle and spacers and now the newer axle goes in about a half inch to far and does not set flush. Any suggestions on what might be the spacers to make the axle set flush in the lugs ?
I will take a look tomorrow, I think I have an axel with spacers off my yz250. I will compare them to the 06 fork set I have. Im pretty sure 06-09 were all the sam.
Cali
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Bakersfield, CA US
6/9/2019 9:01pm
Cali wrote:
Sounds about right, I can look when I get home. I have a few sets of wheels & axels. Also have a nice set of 2006...
Sounds about right, I can look when I get home. I have a few sets of wheels & axels. Also have a nice set of 2006 YZ450F forks. They are SSS, way better than what my 2005 YZ250 2 stroke had. I’m probably going to throw them on eBay, unless anyone wants to throw an offer out their.
mb60 wrote:
Cali, Not sure you can help but I bought a 2007 YZ 250 that had the forks swapped off either a newer YZ or maybe even...
Cali,

Not sure you can help but I bought a 2007 YZ 250 that had the forks swapped off either a newer YZ or maybe even YZF newer model. The stock spacers for the 2007 YZ 250 made the axle stick out of the lugs about a inch. I bought a newer axle and spacers and now the newer axle goes in about a half inch to far and does not set flush. Any suggestions on what might be the spacers to make the axle set flush in the lugs ?
Radical wrote:
Can you post some pictures of all of the parts?
Triple clamps, forks, lugs, spacers, brakes?
I didn’t get a chance to clean them up yet, but here are a few pics. I will get some better pics after I clean them up.




Radical
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San Diego, CA US
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2382nd
6/13/2019 1:54am
mb60 wrote:
Cali, Not sure you can help but I bought a 2007 YZ 250 that had the forks swapped off either a newer YZ or maybe even...
Cali,

Not sure you can help but I bought a 2007 YZ 250 that had the forks swapped off either a newer YZ or maybe even YZF newer model. The stock spacers for the 2007 YZ 250 made the axle stick out of the lugs about a inch. I bought a newer axle and spacers and now the newer axle goes in about a half inch to far and does not set flush. Any suggestions on what might be the spacers to make the axle set flush in the lugs ?
Radical wrote:
Can you post some pictures of all of the parts?
Triple clamps, forks, lugs, spacers, brakes?
Cali wrote:
I didn’t get a chance to clean them up yet, but here are a few pics. I will get some better pics after I clean them...
I didn’t get a chance to clean them up yet, but here are a few pics. I will get some better pics after I clean them up.




Can you send closeup pics of where your hubs mount to each fork?
dmm698
Posts
948
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6/24/2015
Location
NY US
6/13/2019 5:46am Edited Date/Time 6/13/2019 5:48am
I just put my 13 yz250 forks on a guys 2005 as I switched to showa stuff. Put my 2013 clamps, with his 2005 stem in them on. I used my stem from my 13 clamps on some 450 clamps because they have the proper tube clamping diameter. Used his 2005 front wheel. He needed to order a newer axle + spacers. The brake side wheel spacer is fine, but the non brake side is too long. Axle sticks about 10-12mm off the top of my head out of the non brake side fork lug. You could shorten that spacer and the axle would slide in flush to the lug like it should, but then it would be sticking too far out the brake side and you'd run out of thread for axle nut. I know you have the complete brake system plus your SSS is from an 06 pre caliper change, but it really is just a brake hanger swap to use an 05 caliper on a newer small caliper set of SSS forks, contrary to manys belief. I THINK 06-07 4 stroke SSS forks had the larger 56mm upper clamp tube diameter so those forks would work in the 05 clamps on their own, and I THINK 06/07 450 steering stem is the same length as the yz250, it changed at some point and yz250 2 stroke has its own stem length.
1
walent215
Posts
2450
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12/6/2014
Location
Ridgecrest, CA US
12/17/2021 11:47pm
So if I’m reading thru all this info right, 07 Yz450 forks should bolt up to an 05 yz125 with no needed parts/mods except a left side spacer that is 1mm difference between the two ?
Thanks in advance .
12/18/2021 9:47am
The Axle and spacers on the '05 125 and the '07 450 are the same part numbers.
walent215
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2450
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Location
Ridgecrest, CA US
12/18/2021 10:20am
The Axle and spacers on the '05 125 and the '07 450 are the same part numbers.
Thank you
Luxon MX
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San Diego, CA US
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189th
12/18/2021 10:44am
The Axle and spacers on the '05 125 and the '07 450 are the same part numbers.
walent215 wrote:
Thank you
Axle spacers are the same, but the fork lugs are different between the two forks. The 05 clamps have a 190mm spread and the 06+ clamps have a 192 spread. So if you're using 05 clamps with 07 forks, you have to remove 1mm from each spacer to bolt up properly. Or just upgrade the clamps to an 06+ version and you won't have to modify anything.
1
12/18/2021 11:42am
I assumed the way the question read he was using the '07 clamps, which would be the better way to do it, IMO.
1

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