1Wide Application: Rear axle brake disc seat is widely applicable for 50cc 110cc 125cc 150cc 200cc 250cc ATV Go kart Quad Bike. 2Steel Alloy: Rear axle brake disc seat is made of high hardness steel alloy, precision manufacturing, anti corrosion anti rust, to ensure reliable operation and long term use. 3Enhanced Performance: Rear braker disc sproket hub provide optimal braking power and improved performance. Whether you are racing or off roading, this brake disc sprocket mount will help you stay in control. 4Optimal Fit: The precision design of the mount seat assures an optimal fit for effective braking. They are accurately machined, ensuring a secure fit and superior performance. 5Easy Installation: The 4 bolt design makes installation quick and hassle free. Simply remove the old brake disc sprocket mount and replace it with this mount seat.<br> 1 x Rear Axle Sprocket hub<br> Note: Due to the light and screen setting difference, the item's color may be slightly different from the pictures. Please allow slight dimension difference due to different manual measurement. Sold by-Minnanxin