V-Twin Mfg Rubber Boot for Kelsey Hayes Rear Master Cylinder 1979-1984 Harley-Davidson
A worn or cracked dust boot on the rear master cylinder exposes the piston to contamination and eventual brake failure. This OE-replacement rubber boot restores the protective seal on Kelsey Hayes style cylinders across several late 1970s and early 1980s Harley-Davidson models.
Key Features
- Stock OE replacement rubber dust boot for Kelsey Hayes style master cylinders
- Protects the master cylinder piston from dirt and moisture contamination
Technical Specifications
- Type
- Rubber dust boot
- Application
- Kelsey Hayes style rear master cylinder
Fitment Notes
- FL (Late 1979): 1979-1984
- FX (Late 1979): 1979-1983
- XL (Late 1979): 1979-1981
- Verify master cylinder style is Kelsey Hayes before ordering
- Review the Fitment tab for complete year and model breakdown



Mark Payne –
It’s what I need for my GMA rear master cylinder which also came from Twisted Choppers.
Anonymous –
Exactly what I ordered and needed