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Ships within 48 hours · Estimated delivery Aug 15 - Aug 20
Better airflow for greater horsepower
2014 Yamaha YFZ450R
Kit fits air springs that mount on axle or leaf stack
2013-2020 Honda CRF250L
2004-2006 Harley Davidson FXSTS Springer Softail
S&S Cycle 31-0078 Super Stock Engine Case - Black - Big Bore 3 5/8in Bore drive-rollers-sliders-guides Better airflow for greater horsepowerCast from A356 T 6 heat treated aluminum alloy. Cases are available for 3 1 2in stock and 3 5 8in big bore motors for any stroke up to and including 5in and most stock length connecting rods. Machined to accept an oil filter assembly that mounts on the front of stock motor cases. All races are line honed and breather cavity is precision machined to optimize breather timing for maximum oil scavenging. Additional parts include crankcase bolts, washers
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