S&S Cycle 31-0047 Special Application Crankcase trailers-ramps-ramps Consistent balance and precision machining

Consistent balance and precision machining

5-Year warranty

Pinion shaft runout must be less than

2010-2016 Harley Davidson FLSTFB Fat Boy Lo

S&S Cycle 31-0047 Special Application Crankcase trailers-ramps-ramps Consistent balance and precision machiningCam chest is moved outward . 250in. to allow crankcases to handle large cylinder bore sizes. Relocated cam chest oil pick up increases gear case scavenging and virtually eliminates oil carry over at sustained high rpm. Machined to accept the stock oil filter assembly used on 92 99 Big Twins. A ported breather passageway and a machined breather window allows the air oil mist to flow from the flywheel cavity to the cam chest of the engine with the least