Hydraulic Brake Caliper Brake Pads included Mounting Bolts are 2 1/2" Center to Center. Compatibility: TrailMaster/Hammerhead/Chinese 150cc/200cc Go-Karts - Front Left Driver Side Hammerhead 250cc Go-Karts TrailMaster/Hammerhead/Chinese 300cc Go-Karts TrailMaster Hurricane 200X Front Brake TrailMaster Mid HammerHead 80T Mid Sized American Sportworks Go Karts 6.000.028 / 552-3008 / 14143 / 6000028250G000