Disc scooter brake used for mini gas or electric kart, ATV, four wheel mini scooter, SUVs. Rear brake set made of fine aluminum alloy ,durable and has great braking performance. Brake stable, no noise, no shock. When the brakes are continuously stepped on, the brakes will not be degraded and the brakes will fail. Good heat dissipation, in the high-speed braking state, it is not easy to cause thermal decay, so its high-speed braking effect is good. Description: Used for brake systems of Pocket Mini Dirt Bike Scooter Electric Scooter Rear Disc Brake Caliper Kits 140mm Rotors For Mini Dirt Mini Gas or Electric Go Kart, ATV, Quad Mini Scooter, Dirt Bike Specification: Type:Rear Disc Brake Caliper Kits Material: Aluminium alloy material Type: Rear disc brake and Caliper Color: Black Caliper and Silver Brake Disc Brake disc diameter: 140mm (5 1/2 inch) Brake disc Center Hole Diameter: 30mm Fitment: 34mm 140mm Brake Disc Rotor For 2 Stroke 47cc 49cc Engine Gas Electric Scooter Pocket Bike Mini Dirt Kids ATV Quad 4 Wheeler. Note: Please allow 1-3CM differences due to manual measurement. Due to the different display and different light, the picture may not reflect the actual color of the item. Thanks for your understanding. Package Included: 1 X Rear Disc Brake 1 X Brake Caliper