S&S Cycle Pinion Gear Nut for 1954-1989 Harley-Davidson Big Twin Flywheels
The pinion gear nut keeps the pinion gear in precise mesh through every operating condition – a loose or failed nut allows the pinion to walk on the shaft, immediately disrupting valve timing and causing rapid wear. The S&S Cycle Pinion Gear Nut provides a factory-spec fastener for 1954-1989 Big Twin flywheels and S&S flywheel assemblies on 1990-1999 engines.
Key Features
- Pinion gear nut for 1954-1989 Harley-Davidson Big Twin OEM flywheels
- Also fits 1990-1999 Harley-Davidson Big Twin engines equipped with S&S flywheels
- Genuine S&S Cycle replacement part – same specification as original equipment
- Made in the USA
Technical Specifications
- Application: Pinion gear nut for 1954-1989 Big Twin OEM flywheels and 1990-1999 engines with S&S flywheels
- Country of Origin: USA
Fitment Notes
- Fits 1954-1989 Harley-Davidson Big Twin OEM flywheels
- Also compatible with 1990-1999 Harley-Davidson Big Twin engines fitted with S&S flywheels
- Verify your flywheel type (OEM or S&S) and year range before ordering
- Review the Fitment tab for complete year and model breakdown
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