STREET AVENGER 85 42mm stroke crank = 89CC

NOTE:   Avenger 42mm stroke Cranks are offered in 2 versions.   Racing and Street This ad is for a OEM STREET version with 4 balance holes per web flywheel suitable for the stock one ring light wt. Avenger 85 piston with 12mm wrist pin.    Heads up!  Not designed for the Menace 85 engines, Buy Menace 42 cranks from Smolik.  This is a 2mm longer stroke crank for your SkyHawk Avenger, Olyin Avenger 85 or YD 85 engine. It is accomplished by moving the crank conn rod pin outboard by 1mm.  Makes 89cc displacement out of a stock Avenger 85cc engine.    Comes with a extra cylinder bottom gasket to move the cylinder upward by 1mm.   With just this crank change turns 40mm stroke 85cc into 89cc.  How much more power difference will it make? Only God Knows!   We have no dyno and YuanDong didn't tell us the performance curve!  Made for a 12mm diameter WRIST PIN.  If you prefer to NOT have the OCDT Drill Starting accoutrement like found in late model SkyHawk ES engines just let us know with note