S&S Cycle 320-0598 M-Eight Flywheel Assemblies - Tapered Wrist Pin - 4-1/2in. 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.

Vehicle Fitment:

2018-2023 Harley Davidson FLFBS Fat Boy 114
2021 Harley Davidson FLH Electra Glide Revival
2018-2023 Harley Davidson FLHCS Heritage Classic 114
2023 Harley Davidson FLHFB Electra Glide Highway King
2019-2023 Harley Davidson FLHRXS Road King Special
2019-2023 Harley Davidson FLHTCUTG Tri Glide Ultra
2022 Harley Davidson FLHTCUTG Tri Glide Ultra G.I.
2019-2023 Harley Davidson FLHTK Ultra Limited
2019 Harley Davidson FLHTKL Ultra Limited Low
2023 Harley Davidson FLHX Street Glide
2019-2023 Harley Davidson FLHXS Street Glide Special
2022-2023 Harley Davidson FLHXST Street Glide ST
2020-2023 Harley Davidson FLTRK Road Glide Limited
2019 Harley Davidson FLTRU Road Glide Ultra
2023 Harley Davidson FLTRX Road Glide
2019-2023 Harley Davidson FLTRXS Road Glide Special
2022-2023 Harley Davidson FLTRXST Road Glide ST
2021-2023 Harley Davidson FXBBS Street Bob 114
2023 Harley Davidson FXBR Breakout 117
2018-2020 Harley Davidson FXBRS Breakout 114
2019-2020 Harley Davidson FXDRS FXDR 114
2018-2023 Harley Davidson FXFBS Fat Bob 114
2020-2021 Harley Davidson FXLRS Low Rider S 114
2022-2023 Harley Davidson FXLRS Low Rider S 117
2022-2023 Harley Davidson FXLRST Low Rider ST 117
2022 Harley Davidson FXRST Low Rider El Diablo 117
2023 Harley Davidson FXST Softail Standard 107