S&S Cycle Crankpin Nut for 1941-1984 Harley-Davidson Big Twin and S&S 5-Piece Flywheels

S&S Cycle Crankpin Nut for 1941-1984 Harley-Davidson Big Twin and S&S 5-Piece Flywheels

A loose crankpin nut threatens the flywheel assembly – movement at the crankpin joint allows the flywheels to shift out of true, putting severe stress on connecting rod bearings and accelerating bottom end wear. S&S Cycle’s crankpin nut provides the correct thread specification for secure, confident assembly of both vintage Harley-Davidson and S&S 5-piece flywheel sets.

Key Features

• Replacement crankpin nut for 1941-1984 Harley-Davidson Big Twin OEM flywheels
• Also fits 1981-1999 S&S Cycle 5-piece flywheel sets
• Provides correct thread specification for secure crankpin joint assembly
• Made in the USA

Technical Specifications

• Fitment: 1941-1984 Harley-Davidson Big Twin OEM flywheels; 1981-1999 S&S Cycle 5-piece flywheel sets
• Country of Origin: USA

Fitment Notes

• Fits 1941-1984 Harley-Davidson Big Twin OEM flywheels and 1981-1999 S&S Cycle 5-piece flywheel sets
• Torque to manufacturer specification using calibrated equipment – crankpin nut torque is critical to flywheel assembly integrity
• Review the Fitment tab for complete flywheel set compatibility