S&S Cycle Motor Sprocket Shaft Assembly for 1936-1951 Harley-Davidson Big Twin

S&S Cycle Motor Sprocket Shaft Assembly for 1936-1951 Harley-Davidson Big Twin

A worn or damaged motor sprocket shaft is a foundational problem that cannot be ignored in any serious pre-unit Big Twin rebuild. S&S Cycle shafts are machined to restore proper bearing fit and sprocket alignment, giving builders a reliable foundation for engines intended for regular road use or demanding performance applications.

Key Features

• Complete assembly includes tapered motor sprocket shaft, nut, and keys
• Compatible with S&S E flywheel assemblies and original stock flywheels
• Precision-machined taper restores correct bearing fit and sprocket alignment
• Engineered for 1936-1951 Harley-Davidson Big Twin engine rebuilds
• S&S Cycle quality for long-term durability in restored and performance applications

Technical Specifications

• Includes: Tapered shaft, nut, and keys
• Shaft Type: Tapered motor sprocket shaft
• Compatible Flywheels: S&S E or original stock
• Application: 1936-1951 Harley-Davidson Big Twin

Fitment Notes

• Fits 1936-1951 Harley-Davidson Big Twin engines, including Knucklehead and early Panhead models
• Compatible with S&S E flywheel assemblies and original stock flywheel assemblies
• Review the Fitment tab for complete year and model breakdown