ZDETGU 420 Chain Sprocket Kit – 17T Front & 37T Rear Set

The ZDETGU 420 Chain Sprocket Kit delivers a precise upgrade for bikes, ATVs, and go karts running on a 420 chain system. Designed for universal compatibility, this kit replaces worn or damaged sprockets without requiring engine modifications, making it a straightforward solution for power transfer across a range of off-road and recreational vehicles.

Engineered with a 17T front sprocket and 37T rear sprocket, the set features a 0.235″ thickness and 1.18″ centre hole spacing, ensuring seamless alignment with 17mm countershafts. The sprockets undergo heat treatment to enhance durability, resisting wear and maintaining structural integrity even under heavy use. This construction extends the lifespan of your drivetrain while minimising strain on the transmission.

The kit incorporates an optimised gear curve design to reduce chain friction, lowering operational stress and improving efficiency. Packaged as a complete set, it includes mounting hardware for easy installation, making it a direct replacement for standard 420 chain systems. Whether upgrading for performance or reliability, this kit offers a no-fuss solution for maintaining optimal drivetrain function.