Hydraulic Master Cylinders

Restore firm, leak-free braking with affordable hydraulic brake master cylinders (some clutch-compatible) for scooters, ATVs, pit bikes, dirt bikes, go-karts, and UTVs. Options include rear/front brake master cylinder pumps (12mm–19mm bore), complete assemblies with reservoir, piston, seals, banjo bolt, and oil cup — fixes spongy pedal, fluid leaks, weak stopping, or upgrades to better feel/response on a budget.

Best fits: GY6 50cc–250cc scooters/ATVs (TaoTao, SSR, Coolster, SunL, Roketa, BMS, Kazuma), 90cc–250cc go-karts (Sunl, BMS, Roketa, Kazuma), 50cc–125cc pit bikes/ATVs/dirt bikes, Odes Raider 800/1000, Tomberlin Crossfire 150, Supermach/Massimo/Coleman 400–800 UTVs, Suzuki, Honda CB900/CBR600/1000, GSXR 600/750/1000 motorcycles. Most are plug-and-play with high-pressure seals, CNC precision, and universal threads for quick repairs or performance upgrades!