V-Twin Mfg Transmission Sprocket Nut and Lock Plate for 1971-1984 Harley-Davidson Sportster
The Ironhead Sportster’s 6-spline transmission mainshaft uses a specific nut and lock tab not shared with later Evolution models. This kit replaces that critical retention hardware with a correctly matched piece so the drive sprocket stays securely fastened.
Key Features
- Transmission sprocket nut with locking tab plate for Ironhead XL transmissions
- For the 6-spline transmission mainshaft found on 1957-1984 (Early) Sportster models
Technical Specifications
- Thread size: 7/8 inch x 20 TPI
- Spline fitment: 6-spline transmission mainshaft
- Includes: Nut with locking tab plate
Fitment Notes
- Fits 6-spline transmission mainshaft on XL models from 1971 to early 1984
- Note: 1957-1984 (Early) Ironhead transmissions use a 6-spline shaft
- 1984 (Late) to 1990 Evolution transmissions use a 19-spline shaft – different part required
- Review the Fitment tab for complete year and model breakdown
