Features: 1. Compatibility: The rear sprocket is designed for 40, 41, and 420 chains used on mini bikes and go karts. Fits Coleman CT200U, BT200X, CT200U-EX, Powersports 212cc, 196cc, and 6.5hp engines; Baja Motorsports MB165 and MB200 models. 2. Steel Alloy Construction: Forged from durable steel alloy with a 5mm thickness for strength and resistance to wear. 3. Drive System Function: Essential component of the rear drive system, supporting stable and efficient chain engagement. 4. Performance Consideration: Sprocket tooth count affects drivetrain characteristics such as acceleration and torque delivery. 5. Replacement Use: Suitable for refurbishing, replacing, or modifying worn or damaged original rear sprockets. Specifications: Item Type: Rear Drive Sprocket Material: Steel Alloy Number of Teeth: 60T Inner Diameter: Approx. 40mm (1.57 in) Outer Diameter: Approx. 245mm (9.64 in) Thickness: Approx. 5mm (0.19 in) Position: Rear Mounting Holes: 4 Compatible Chain Types: 40, 41, and 420 chains Fitment: Fits Coleman CT200U, BT200X, CT200U-EX, Powersports 212cc, 196cc, and 6.5hp engines. Fits Baja Motorsports MB165 and MB200. Fits Hensim MB165 and MB200. Fits Massimo MB200. Fits Trailmaster MB200. Note: This 60-tooth sprocket is intended for use with 40/41/420 chains on mini bikes and go karts. Verify that your original sprocket’s center bore diameter and mounting hole pattern match before installation.