'07 CRF250 SS Valves??

[Mikey350D]

ANY problem with using ss valves on CRF250??
Strictly MX: 125 Junior
I've heard you might lose some top RPM but rider never hits rev limiter.

Thanks

 

[Rich Rohrich]

Stainless steel valves with the appropriate springs to match the valve weight are an excellent way to ensure long term reliability in these engines. Dyno tests have shown no change in peak rpm capabilities regardless of the unsubstantiated rumor that runs rampant on the internet.

You'll find a stainless valves, good quality springs and a proper valve job to be an excellent investment. Kibblewhite valves and springs are the industry standard in this area, and the only stainless valves and springs I'll use in the engines I build.

You won't be disappointed. I know I haven't been. ;)