Features: 1. Fitment: Designed as a replacement for Hammerhead model 80T go karts, TrailMaster Mid 6.000.305 XRS XRX go karts, and American Sportworks mid-size models. 2. Design: Master cylinder features one port for the rear brake caliper. Base total length measures 4 1/4 inches (10.8 cm), with installation bolt spacing of 1 3/4 inches (4.45 cm). 3. Premium Material: Constructed from aluminum alloy, offering rust resistance and high-temperature durability. 4. Reliable Performance: Precision manufacturing ensures consistent operation and long-term dependability. 5. Easy Installation: Direct replacement design allows for simple setup with no complex procedures required. Specification: Item Type: Go Kart Brake Master Cylinder Material: Aluminum Alloy Size: Base Total Length: 4 1/4 in (10.8 cm), Installation Bolt Spacing: 1 3/4 in (4.45 cm) Installation Location: Brake System Installation Method: Replacement Installation Fitment: Compatible with Hammerhead model 80T go karts Compatible with TrailMaster Mid 6.000.305 XRS XRX go karts Compatible with American Sportworks mid-size models and various other compatible brands