Renthal Dirt Bike CRF150F and CRF230F 428 Conversion Kit
Save over 2 lbs. over stock 520 O-ring chain and steel rear sprocket. Improves acceleration and responsiveness.
• Kit includes front and rear sprockets with same gear ratio as stock and a gold Renthal R-428 chain
• Front sprocket is made from super nickel chromoly and is grooved to clear mud and increase chain life
• Rear sprocket is made from 7075 T-6 aluminum