S&S Cycle 320-0620 M-Eight Flywheel Assemblies - No Balancer Gear, Full Wrist Pin - 4 5/8in. Stroke

Consistent balance and precision machining. Heat-treated 4140 material is harder and 114% stronger than stock. S&S high-strength connecting rods are perfect for use with gear drive cams. Available with either full width or tapered wristpin connecting rods. Choose from 4-3/8in, 4-1/2in or 4-5/8in stroke, with or without balancer gear. No welding required.