40 Tooth 420 Chain Mini Bike Sprocket Fits Coleman CT100U CC100X Baja Doodle Bug DB30 Mega Moto MMB105 37mm Bore 6 Hole Mount Heavy Duty Carbon Steel Rear Sprocket For Off Road Go Kart Mini Bike

40T 420 Chain Sprocket for Mini Bikes with Hardware
✔️ 37mm bore, 6-bolt mount, carbon steel, fits Coleman CT100U, DB30

The rear sprocket is a 420 chain gear built for mini bikes and go-karts, designed to upgrade drive performance. It’s commonly used on small motorcycles and DIY bike builds to improve acceleration and reliability in rugged terrains.

✅ Material: high-quality carbon steel ensures solid hardness and durability
✅ Size and fit: 40-tooth sprocket with 37mm bore and 6-hole mount
✅ Compatibility: works with 420 chain and popular engines like CT100U, CC100X, DB30, Mega Moto MMB105
✅ Performance: enhances acceleration, stabilizes chain engagement, and reduces wear
✅ Package: includes 1 rear sprocket, 6 screws, and 6 nuts for easy installation

💡 What is a handy rear sprocket used for on mini bikes and how should I pick one? A handy rear sprocket helps transfer engine power to the drive chain and keeps the chain engaged on uneven terrain. - Durable carbon steel construction for long life - Compatible with 420 chain and 37mm bore with 6-hole mount - Easy DIY install with included screws and nuts

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