53 Tooth Rear Chain Sprocket With 76Mm Center Bore For 420 Chain Fits 50Cc 70Cc 90Cc 110Cc 125Cc And 250Cc Pit Dirt Bike ATV Quad Motorcycle Built Tough Steel Construction For Reliable Braking And Smooth Acceleration

53-Tooth Rear Chain Sprocket with 76mm Bore for 420 Chain
✔️ Center bore 76mm, 53T, fits 420 chain, single sprocket

The rear chain sprocket is a 53-tooth steel replacement designed for 420 chain systems. It fits a 76mm center bore and is a common upgrade for 50cc-250cc dirt bikes, ATVs, quad bikes, and motorcycles to improve power transfer and throttle response.

✅ 53 teeth rear sprocket for 420 chain
✅ Center bore 76mm (2.99"), ID 92mm (3.62"), mounting holes 8.5mm (0.33")
✅ Compatible with 50cc-250cc dirt bikes, ATVs, quad bikes, and motorcycles

💡 What is a rear chain sprocket used for on small engine bikes?

- Handy for replacing worn sprockets and maintaining drive efficiency. - Ensures proper chain tension and smoother acceleration. - Best used with a matching front sprocket and 420 chain for reliable performance.