S&S CYCLE EVOLUTION 4.25" STROKER FLYWHEEL ASSEMBLY HARLEY DAVIDSON

S&S CYCLE EVOLUTION 4.25" STROKER FLYWHEEL ASSEMBLY

• Made of high-strength forged steel and designed for stock and high-performance custom applications
• Special keyed 6° large diameter tapered sprocket shaft that provides more contact area for increased strength
• Standard S&S tapered crankpin and pinion shaft are used for ease-of-service
• 8-1/2" diameter with 4-1/4" or 4-5/8" stroke
• Kits come fully assembled, trued and balanced to stock H-D 80" or 96" pistons
• Include flywheel, crankpin and connecting rods
• Made in the U.S.A.