Trail Bikes 51mm Stroker Crank for CRF50/70

Convert your 88cc motor into a 108cc stroked animal with the 51mm Stroker Kit from Trail Bikes. This is an affordable kit that will convert your TB 88cc Race Head kit into a powerful open class 108cc engine (much more powerful than the common Chinese 107 and 125cc engines). Also - this crank was made specifically for the newer engines and thus - you will not have any fitment issues like trimming the piston skirts in order to clear the crank or the piston not lining up with the cylinder deck.

• 51mm Crankshaft with NTN bearings
• Crankcase and clutch cover gaskets
• Head gasket kit

Exceeds OEM Standard equipment

 Fitment:

• Honda Z50 - 1988-1999
• Honda XR50 - All Years
• Honda CRF50 - All Years
• CRF70 - All years