Fitment:For 97cc 98cc 100cc 2.5hp 2.8hp for Coleman for Baja Hensim TrailMaster Realtre* Mini Bike Go Kart Drift Trike Profile. For Coleman (CT100U, CC100X, Trail 100) mini bike/for Coleman (CK100, SK100) go kart/for Baja Hensim (Doodle Bug, Blitz, Dirt Bug, Racer) DB30 mini bike/for TrailMaster MB Storm mini bike DESIGN FOR BETTER ACCELERATION: The 65-tooth configuration provides increased low-end torque and quicker acceleration. Perfect for off-road riding, hill climbing, and tight trails where pulling power matters most. Get moving faster with every twist of the throttle. DURABLE STEEL CONSTRUCTION: This sprocket is made from high-strength steel. It resists bending, cracking, and wear from chain tension and impact. Designed to last through countless rides on trails, yards, and dirt tracks. Size:7.9" outside diameter,65 tooth sprocket with a 1.46" bore(inside diameter); Mounting Hole Distance (center to center, bolt hole circle): 50.5mm (1.99 inch) Note: Please refer to the picture for measurement before order. FITMENT:Go Kart Sprocket designed with 65 Tooth, works with 35 Chain for Go Karts and Mini Bikes.