Two Stroke Motocross

Two Stroke Motocross Forum => Technical => Topic started by: Shawn36 on December 07, 2010, 06:19:12 PM

Title: '02 CR250 shock
Post by: Shawn36 on December 07, 2010, 06:19:12 PM

Quick question, is the rear shock the same between the CR125 and CR250 2-strokes from 02-07?  I'm having trouble finding a replacement shock for the 250 but several show up on ebay from 125s.  Looking to replace a blown Ohlins..

Title: Re: '02 CR250 shock
Post by: SachsGS on December 07, 2010, 10:10:06 PM

Why not overhaul the Ohlins? If you are buying a used shock you might find yourself with two shocks that need rebuilding.

Title: Re: '02 CR250 shock
Post by: Shawn36 on December 08, 2010, 05:19:05 AM

It's significantly more expensive to do so and I wasn't impressed with the Ohlins to start with.  For all it's adjustability it seemed to suffer from a soft mid-stroke and damping problems during a moto on rough tracks.  Granted I could have revalved it and I planned on it until the thing let go on a landing.  Since I nearly took a real good soil sample I'm not that interested in keeping it on there now.  Plus I planned on having a stock shock revalved and rebuilt almost immediately and local suspension shops know Showa/KYB.  

Title: Re: '02 CR250 shock
Post by: graham472 on December 08, 2010, 11:05:39 PM

Pretty sure the 250 had Showa and the 125 Kayaba

Title: Re: '02 CR250 shock
Post by: beckvall on January 02, 2011, 03:41:55 AM

the honda 125 got kyb shocks but im not sure what brand the 250 got. but the only difference is the stifnes on the springs :)

Title: Re: '02 CR250 shock
Post by: 125mx.fi on January 02, 2011, 05:35:44 AM

250 forks are twin chamber 47mm Showas, shock is 50mm body Showa.
125 forks are open chamber 46mm Kybs, shock is 46mm body Kyb.
 
  Both had new linkage and swingarm in 2005.

 If you fix the Ohlins, try KYB shock oil (K2C). It helps.

btw. CRF250 shock is same lenght (498) and has same stroke (133). Doesn't know how it fits. At least it needs valving.