【Friendly Reminder】The size of the center mounting hole on the 420 sprocket determines its compatibility with your mini bike. Please verify dimensions carefully before purchase. The 420 sprocket is suitable for modified mini bikes equipped with a 420 chain and a 212cc or larger displacement engine.
【Application】The 40-tooth sprocket balances torque and RPM, delivering both acceleration performance and high-speed smoothness. Its tooth profile perfectly matches chain pitch, making it suitable for both road and track use.
【Product Material】Constructed with a high-strength carbon steel core and zinc-plated finish, our product offers exceptional wear resistance and corrosion protection. This reduces chain wear and extends the lifespan of your drivetrain.
【After-Sales Service】Should you encounter any issues before or after use, we are here to assist you in resolving them.