Features: 1.Applicable Model: Rear sprocket cog fit for 50cc 90cc 110cc 125cc Chinese ATV Dirt Pit Bike Quad 4 Wheel Go Cart Trike Motorcycle. 2.Better Transmission Performance: Ideal for sprocket replacement, refurbishment, repair, upgrade, etc. of the original car, providing maximum power transmission and better transmission performance. 3.Durable Material: Using high carbon steel material, exclusive heat treatment process to increase wear resistance and strength. Professional manufacture, exquisite workmanship and long service life. 4.Good Performance: 420 chain 37 teeth, stable performance, high reliability, provides a strong and durable standard rear sprocket, make sure your bike uses a 420 sprocket. 5.Easy Installation: The sprocket is easy to install and disassemble, and only needs a simple tool to quickly complete the replacement, which is reliable and durable. Specification: Item Type: Rear sprocket cog Material: Carbon steel Installation Location: Rear Number of Gears: 37T Type: 420 chain Inner Diameter: Approx. 1.89in/48mm Minimum Hole Diameter: Approx. 0.35in/9mm Sprocket Diameter: Approx. 5.98in/152mm Center to Center: Approx. 2.68in/68mm Thickness: Approx. 0.24in/6mm Fitment: Fit for 50cc 90cc 110cc 125cc Chinese ATV Dirt Pit Bike Quad 4 Wheel Go Cart Trike Motorcycle Replacement for TaoTao Replacement for tforce Replacement for Roketa Replacement for Coolster Replacement for Buyang Replacement for Kymco Replacement for Kazuma Replacement for Sunl PackageList: 1 x Rear Sprocket Cog