any experience on kx to kdx fork swap

[boy san]

i have a '02 kdx looking to replace my front forks with a '98 kx 250.
any advice or comments from someone who has knowledge about this mod is greatly appreciated.

 

[49]

Change the stem to the KX clamps.
Make a spacer for the top clamp to the KDX stem.
Source proper bearings and Spacer the front wheel or use a KX front wheel.
Tune the KX settings to your liking, AND
Have a nice day!!!!!!!!

 

[fury1]

does that apply to most years,I have an 89 kdx,looking at a 92 kx with a bad engine for cheap money,is the swap worth it,or should i spend the money on rebuild for both ends

 

[boy san]

thanks, so the kx stem off the lower tri clamp wont work? do i need to take the kdx stem to a shop to have it pressed it in to the kx tri-clamp?

 

[KelvinKDX]

Sage has done it to his '99 220. ('99 KX125 front forks).

 

[boy san]

hey kelvinkdx, thanks
i havn't talked to sage yet. is it possible for you to contact him and let him know that i'd be very happy to talk to him?
thanks

 

[KelvinKDX]

Try this:

email - [email protected]
tel. - 541-389-3478
website: http://www.sagesdirtandstreet.com

 

[boy san]

thanks

 

[acutemp]

fury1,

If you have access to a machinist this is a great swap. Here is a list from an article on putting an 89 kdx motor into a 91 kx 125 chassis.

1. Cut the engine mount's out of the kx frame and weld in kdx mounts.

2. Heat and flatten the top portion of the right hand, rear bottom frame tubes.

3. Mill the head stay off the rear of the kdx cylinder head, machine a new head stay and mount it to the front three cylinder head studs.

4. Mill aprox. .250 inches from the thermostat housing on the kdx's head.

5. Machine a new inlet manifold for the kdx head to take advantage of the kx's superior dual water path.

6. Replace the kdx's water pump outlet elbow with a kx 250 elbow, part # 52014-1070.

7. Replace the kdx radiators with the kx parts.

8. Fabricate new head stay mounting plates, (head to frame tubes.

9. Fabricate new exaust system, a good welder can modify a kdx pipe to fit.

10. Assemble and ride.!

11. Post pic's and ride reports on DRN :)

--Dan

 

[acutemp]

Here's a pic of the finished product.