1Vehicle Fitment: Replacement for Rhino 450 YXR450 20062009; Replacement for Rhino 660 YXR660 20042007; Replacement for Rhino 700 YXR700 20082013. 2OE Number: Reference part numbers are 5B4 2580T 01 00, 5B4 2580U 01 00, 59300 05H00 999, ensuring correct OE match to prevent purchasing errors and other issues. 3Accurate Control: Front brake calipers precisely control braking force through a hydraulic system, allowing riders to better manage the braking process. 4Perfect Heat Dissipation: Front brake caliper is made from ABS and metal materials with heat dissipation design to improve heat dissipation, preventing overheating during braking for a safe ride. 5Adjustment Performance: Front brake hydraulic calipers allow riders to adjust clamping force and braking feel for a customized and optimal braking experience. 2 x Front Brake Assembly