AUTOKAY Hammerhead 80T Go-Kart Brake Master Cylinder – TrailMaster MID (6.000.305 XRS/XRX)

Upgrade your go-kart braking with the AUTOKAY Hammerhead 80T Master Cylinder. This hydraulic brake master cylinder with reservoir assembly is designed to fit a range of go-kart models, including Hammerhead 80T, TrailMaster Mid, and mid-size American SportWorks, as well as many other Chinese brands. The integrated reservoir helps keep hydraulic fluid protected and ready for action, ensuring smooth, consistent braking performance on the track or trail.

Key design notes make installation straightforward for enthusiasts and professional racers alike. The base length measures 4 1/4 in and the mounting bolts spacing is 1 3/4 in, with a single port dedicated to the rear brake caliper. These dimensions help you determine compatibility with your frame and existing lines, and the compact profile minimizes interference with other components.

What this master cylinder brings to your kart

• Brand-new hydraulic brake master cylinder with reservoir assembly for a clean, integrated look.
• Designed to fit go-karts, reducing the need for adapters or custom fittings.
• Compact form factor with a single rear-port to simplify routing of the brake line.
• Compatibility with Hammerhead 80T, TrailMaster Mid, American SportWorks mid-size and many Chinese brands.

Usage scenarios and benefits are possibilities, not guarantees. In practice, you may experience improved pedal feel, consistent hydraulic response, and easier maintenance when upgrading to this master cylinder. Always verify compatibility with your specific chassis and caliper setup.

Package content and installation tips

• Package includes: 1 x master cylinder with reservoir assembly (as pictured).
• Check mounting bolt spaces (1 3/4 in) and base length (4 1/4 in) during installation.
• Ensure your rear brake caliper port aligns with the single-port design for reliable operation.

With AUTOKAY, you’re choosing a component designed for simplicity, durability, and straightforward upgrades. While performance can vary based on your kart configuration, this master cylinder offers a practical path to refreshed braking control on trusted go-kart models.