Description
A worn or damaged crankcase bearing directly impacts engine reliability and performance—especially in high-RPM applications where precision is non-negotiable. S&S Cycle’s right-side main bearing assembly restores OEM specifications and ensures your crankshaft runs true, preventing catastrophic internal damage. This is essential maintenance for Harley-Davidson engines that demand durability under sustained load.
- Manufacturer: S&S Cycle
- Part Number: 31-4057
- Position: Right side crankcase
- Type: Main bearing assembly
- Color: White
- Origin: Made in U.S.A.
- Application: XL models
- Installation: Requires crankcase disassembly
- Material: OEM-equivalent specifications








