Drag Specialties Rear Master Cylinder Rebuild Kit – Harley Big Twin / Softail / Dyna / Touring / Sportster – Replaces 42382‑87A/B/C/D – Made in Japan – 10% Off

OVERVIEW

The Drag Specialties Rear Master Cylinder Rebuild Kit restores precise rear braking control on aging motorcycles. Constructed with a durable aluminum housing and a reinforced metal piston, this repair assembly directly replaces OEM part numbers 42382‑87A through D. Engineered as a direct Softail platform solution, it delivers immediate hydraulic restoration and reliable pedal feedback without requiring full reservoir replacement.

ENGINEERING & PERFORMANCE

The kit reinstates consistent hydraulic pressure and a firm pedal response by replacing worn seals and deteriorated internals. Its aluminum master cylinder body houses factory-preassembled components that meet or exceed original equipment tolerances. Corrosion-resistant pistons and heat-stable seals ensure long-term operation under highway speeds and heavy loads, while direct bolt-in installation eliminates adjustment guesswork during routine maintenance.

KEY FEATURES

• Rear master cylinder rebuild kit for complete hydraulic system renewal
• Includes durable metal piston, precision seals, and internal hardware
• Aluminum housing with pre‑assembled components for simplified installation
• Direct replacement for Harley OEM 42382‑87A, 42382‑87B, 42382‑87C, and 42382‑87D
• Compatible with standard DOT 5 brake fluid systems
• Manufactured in Japan to strict quality standards
• Meets or exceeds original equipment specifications
• Restores proper rear brake function and modulation

TECHNICAL SPECIFICATIONS

• Brand: Drag Specialties
• Part name: Rear Master Cylinder Rebuild Kit
• Material: Aluminum body, metal piston, quality seals
• Accepted fluid: DOT 5 brake fluid
• Supported years: 1987–2023
• Compatible Harley trims: Sportster, Dyna, Softail, Touring

FITMENT

• Harley Touring (1992–2007)
• Harley Softail (1987–2023)
• Harley Dyna (1991–2017)
• Harley Sportster (1987–2003)

WHY HARLEY RIDERS CHOOSE THIS

Riders select this rebuild kit when rear brake fade or sponginess compromises ride safety without the upfront cost of swapping an entire master cylinder. The pre‑assembled aluminum housing and hardened steel piston deliver lasting vibration resistance and smooth hydraulic engagement across decades of chassis iterations. By returning factory-grade pedal feedback and consistent stopping power, it bridges the gap between routine maintenance and reliable street-ready braking performance.