86 KDX with 02 KX125 forks
Posted: 10:48 pm Feb 14 2018
Hi All,
Upgraded my 86 to 2002 KX125 48mm KYBs in early 2017 and got them working pretty good towards the end of the year.
I bought the KX rolling chassis for $100 and the conversion wasn't very difficult but getting the forks to work well was a lot of work.
I was really glad my helmet had a strap the first few rides or it probably would have flown off my head over small bumps they were so stiff.
I ended up with a really unconventional shim arrangement, basically inverted with very light low speed damping but it seems to work well.
Overall a great improvement and fun project.
Some details:
Stock KDX stem was knurled and pressed in with Loctite
Forks were shortened 33mm - measured unloaded axle to lower triple clamp and determine difference
New spring seat and spacer made to shorten forks.
Bladders gone
KX upper triple clamp was machined to accept conical KDX bushing
KX125 wheel, brakes , and fender
Some photos:
Upgraded my 86 to 2002 KX125 48mm KYBs in early 2017 and got them working pretty good towards the end of the year.
I bought the KX rolling chassis for $100 and the conversion wasn't very difficult but getting the forks to work well was a lot of work.
I was really glad my helmet had a strap the first few rides or it probably would have flown off my head over small bumps they were so stiff.
I ended up with a really unconventional shim arrangement, basically inverted with very light low speed damping but it seems to work well.
Overall a great improvement and fun project.
Some details:
Stock KDX stem was knurled and pressed in with Loctite
Forks were shortened 33mm - measured unloaded axle to lower triple clamp and determine difference
New spring seat and spacer made to shorten forks.
Bladders gone
KX upper triple clamp was machined to accept conical KDX bushing
KX125 wheel, brakes , and fender
Some photos: