Fit For CRF450R CRF450X CRF250RX CRF450RX Motorcycle Rear Brake Master Cylinder Pump Quiet operation: reduces brake noise, delivering a quieter and more pleasant driving experience Product description: easy installation, good sealing, flexible hole spacing, high compatibility It maintains stable function in rough weather environments, with solid heat-resistant and anti-degradation features for long-term daily use. Built to withstand inclement weather, this item has outstanding thermal stability and anti-aging performance, ensuring lasting durability., Manufacturer: AQYHSOTW