MX650 Upgrade Kit Replacement for: Modified MX650 chain and sprocket kit is compatible with Razor MX650 dirt bike, Razor MX500 electric dirt rocket bike, SX500 Mcgrath dirt bike, RSF650 pit bike off-road
Note: This Razor MX500 upgrade kit is a good choice for you to upgrade your drive system. You need to pay attention to the motor on your razor dirt bike (MY1020 type motor is ok). Mounting diameter length: 10 mm (0.4 inch), mounting diameter width: 8.5 mm (0.34 inch) of motor sprocket
Different Motor Sprocket for Choices: Come with 9T 11T 13T motor sprockets for different needs. The larger front motor sprocket is an ideal choice for those seeking faster speeds, effortless operation, and reduced gear wear. The smaller motor sprocket is ideal for those seeking enhanced hill-climbing capability, more responsive acceleration, and comfortable riding
Size: center hole diameter: 54 mm (2.1") of rear 65T sprocket, overall diameter: 200 mm (7.87"), chain model: 35 chain 108 links