stock engine no bore 11:1 piston???

[ridered86]

I can put in an 11:1 piston in my stock 400ex right if so who makes the best pistons???

[GrounD PoundeR]

Go to EXRiders link page and check out Marcum's. They are pretty straight forward with you. From what I'm being told try to do all your bolt ons first then crack the case to do mods.

[440exnacsracer]

go to ctracing.com and check out there selection.

[MichaelS693]

Weisco