Steel Go Kart Sprocket Hub for Three Quarter Inch Bore and Three Sixteenth Inch Keyway Hardware with 40 41 420 Chain and 50 Tooth Drive Sprocket Kit for Predator 212cc 196cc Six And A Half Horsepower Drift Trike Heavy Duty Go Kart Racing

Heavy-Duty 4-Inch Sprocket Hub Kit for Go Kart Engines
✔️ 3/4 in bore, 3/16 in keyway; includes 50T sprocket and hardware

This sprocket hub kit is a heavy-duty drive component designed for go-karts, drift trikes, dune buggies, and other small racing vehicles. It accepts a 3/4" axle and 3/16" keyway and pairs with 40-41-420 chain, making swaps quick and reliable. Pack includes 1 x Sprocket Hub, 1 x 420-50T Sprocket, 1 x Keyway, 4 x Screws, 4 x Nuts.

✅ 4" sprocket brake hub with 3/4" bore and 3/16" keyway; fits most 3/4" axle setups on mini bikes and go-karts.
✅ Mounting data: bolt circle 68.5mm (2.7"), center bore 41mm (1.63"), overall diameter 205mm (8.07"), four 11mm (0.45") holes.
✅ Includes: hub, 50T sprocket, keyway, four screws, four nuts for a complete kit.
✅ Material: 45# steel for strength and durability in racing conditions.
✅ Easy install: align keyways, bolt sprocket, insert key, tighten set screws.

💡 What is a sprocket hub kit used for in a go kart drivetrain?

It's a handy upgrade for the drive system that keeps the sprocket aligned and transfers power cleanly to the chain.

- improves chain alignment with 40-41-420 chain for reliable power transfer on go karts and drift trikes - supports 3/4" axles and 3/16" keyways for common engine setups - includes hub, 50T sprocket, keyway, screws, and nuts for quick install - made from 45# steel for durability under racing use