any experience on kx to kdx fork swap

B

boy san

Member

Dec 4, 2002

25

0

• Dec 17, 2002

• #1

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.

 

4

49

Member

Apr 10, 2001

15

0

• Dec 21, 2002

• #2

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!!!!!!!!

 

F

fury1

Member

Sep 15, 2002

31

0

• Dec 21, 2002

• #3

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

 

B

boy san

Member

Dec 4, 2002

25

0

• Dec 22, 2002

• Thread starter
• #4

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

LIFETIME SPONSOR

Aug 25, 2000

1,622

0

• Dec 22, 2002

• #5

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

 

B

boy san

Member

Dec 4, 2002

25

0

• Dec 22, 2002

• Thread starter
• #6

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

LIFETIME SPONSOR

Aug 25, 2000

1,622

0

• Dec 22, 2002

• #7

Try this:

email - sage@sportrider.net
tel. - 541-389-3478
website: http://www.sagesdirtandstreet.com

 

B

boy san

Member

Dec 4, 2002

25

0

• Dec 22, 2002

• Thread starter
• #8

thanks

 

acutemp

LIFETIME SPONSOR

Sep 4, 1999

197

0

• Dec 22, 2002

• #9

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

LIFETIME SPONSOR

Sep 4, 1999

197

0

• Dec 22, 2002

• #10

Here's a pic of the finished product.

 

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