Trail Bikes 51mm Stroker Crank for CRF50/70

TB Parts

$163.99 $163.99
In Stock - Usually ships in 1 business day
Fast Shipping, 60 Day Returns, Great Customer Support


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


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

Price Guarantee

Found a lower price, see our price match policy