Feature●For 50cc 90cc 110cc 125cc ATV Apollo Atomik Ssr Pit Dirt Bike Buggies Go kart●Package includes:1 x Foot Disc Brake Master Cylinder Assembly (with brake pad installed)+1 Pair Extra Spare Brake Pad●Caliper mounting hole central spacing:45mm●Please Check The Size Before You Buy ItDescription HIAORS Rear Foot Disc Brake Master Cylinder Assembly for 50cc 70cc 90cc 110cc 125cc Chinese ATV Apollo Atomik Ssr Pit Dirt Bike Buggies Go kart