Hot Rods Stroker Crankshaft Assembly Excluded From Discounts The O-ring groove is a

The O-ring groove is a design update for all chain drive 4th gears from 1977-1986

Hydration System Compatibility: Features to support hydration systems for long rides

Fast and easy installation

Never use automatic transmission fluid

the K7 adapts perfectly to every rider

Hot Rods Stroker Crankshaft Assembly Excluded From Discounts The O-ring groove is aFEATURES All new assembly sold complete with Hot Rods connecting rod Factory assembled and trued to OEM specifications, Hot Rods cranks will meet or surpass the OEM in performance Ready for installation "Stroker" cranskhaft assembly adds 1,5 mm to 5 mm of stroke depending on application; in some cases cylinder head must be modified or special pistons used (as noted) Crankshaft is completely rebuildable with genuine Hot Rods connecting rods Main