Description Features: 1. Compatibility: The rear sprocket is specifically designed for 40, 41, and 420 chain Mini Bikes and Go Karts. Replacement for Coleman CT200U, BT200X, CT200U-ex Powersports 212cc, 196cc, 6.5hp; Replacement for Baja Motorsports Mini Bike MB165, MB200. 2. Steel Alloy Construction: The sprocket is forged from durable steel alloy material, ensuring a 5mm thickness that provides resistance to breakage and withstands daily wear and tear for reliable operation and long-lasting durability. 3. Essential for Drive System: The rear sprocket plays a vital role in the drive system, ensuring stable and efficient chain drive. It enhances the overall performance of the drive system by improving stability and efficiency. 4. Performance Enhancement: The size of the rear sprocket can impact vehicle performance. This rear drive sprocket can improve torque and climbing ability. 5. Versatile Applications: The chain rear sprocket can be used for various purposes, including refurbishing, replacing, and modifying old or damaged sprockets on original vehicles. Specification: Item Type: Rear Drive Sprocket Material: Steel Alloy Number of Sprocket Teeth: 60T Inner Diameter of Sprocket: Approx. 40mm / 1.57in Outer Diameter of Sprocket: Approx. 245mm / 9.64in Thickness of Sprocket: Approx. 5mm / 0.19in Position on the Vehicle: Rear Screw Fixing Holes: 4 Adaptable Chain Type: Works with 40, 41, 420 chains for go karts and mini bikes Fitment: Replacement for Coleman CT200U, BT200X, CT200U-ex Powersports 212cc, 196cc, 6.5hp, Replacement for Baja Motorsports Mini Bike MB165, MB200 (for Heat, for Mini Baja, for Warrior), Replacement for Hensim Mini Bike MB165, MB200 (for Heat, for Mini Baja, for Warrior), Replacement for Massimo MB200, Replacement for Trailmaster MB200 mini bike Note: This sprocket is designed with 60 teeth for 40/41/420 chains for karts and mini bikes. Please ensure the center hole diameter and mounting hole distance of your original sprocket match our product specifications; if not, it may not be compatible with your bike.