RENTHAL Steel Self-Cleaning Front Sprocket 439 - 520 for Honda CR125R, CRF250R, CRF250X 439--520-14GP

Renthal sprockets and crown gears are developed in competitions in the USA. They are precision machined from high-quality materials. These transmission components limit friction in order to transmit as much power as possible to the rear wheel.

• Anti-mud: improved evacuation of mud for maximum and constant efficiency
• Made from a nickel-chrome-molybdenum alloy: greater strength
• Lighter than original parts
• An excellent compromise between efficiency and longevity
• Recommended for race use