GMA Engineering Kelsey Hayes Rear Master Cylinder 5/8 Bore Fits Harley-Davidson 1979-1984 FL FX XL
Replacing a worn rear master cylinder does not have to mean compromising on feel. The GMA Kelsey Hayes-style unit restores the crisp, fade-resistant braking that gave these Harley-Davidson models their confident road manners, precision-engineered to spec so your foot finds exactly the same pressure it expects every time.
Key Features
- Direct Kelsey Hayes-style replacement for the factory rear master cylinder on compatible 1979-1984 Harley-Davidson models
- CNC-machined billet 6061 aluminum construction reduces weight and resists corrosion over the long term
- Available in Natural machined, Polished, and Black anodized finishes
- 5/8-inch bore delivers factory-correct pedal feel and consistent brake line pressure
- Complete with piston, spring, and boot kit for a ready-to-install upgrade
Technical Specifications
- Bore Size
- 5/8 inch
- Material
- Billet 6061 aluminum
- Finishes
- Natural, Polished, Black
- Includes
- Piston, spring, and boot kit
- Made in
- USA
Fitment Notes
- Fits Harley-Davidson 1979-1984 FL, FX, and XL models equipped with Kelsey Hayes-style rear master cylinder
- Review the Fitment tab for the complete year and model breakdown
- Verify your OEM master cylinder style before ordering: Kelsey Hayes and Wagner styles are not interchangeable
- Not affiliated with or endorsed by Harley-Davidson.
Thomas D. –
Great quality American made part! Perfect fit too!
Michael L. –
Nice product.
Lee Conover –
My whole brake system is GMA on my 103 Pan, Twisted has the parts to keep it that way
David D. –
Perfect fit and operation. Matching the correct master cylinder piston size to the brake caliper is extremely important.
rudy schneider –
great price great service