Renthal Grooved Front Sprocket 520 Chain Pitch x 13 Teeth 501 520 13GP 2008 Yamaha WR250F 2001 03 Spirit 2001 03 Spirit Product Details Product Line Bronco Heavy Duty Gas Shocks Part Number AU 04418 Fitment Type Model Specific Fitment Use Type Unit Sale Qty Each Style Heavy Duty OE Replacement Size Position Rear Material Color Finish Functional Length Product Disclaimer Fitment Note Fitment Note Fitment Note Fitment Note Fitment Note Grooved chain wheels have cut outs at the bottom of the tooth to allow the escape of mud that would otherwise be trapped between the chain wheel and the chain Fitment Note Fitment Note Fitment Note Fitment Note Fitment Note