Bike Engine Clutch Bell Drum Brushing Sleeve Kit For 100cc 4 Stroke Motors Flange Bearing Parts For Mini Bicycle Engine Starting Clutch Transmission Install Gas Engine Replacement Parts For Easy Installation And Long Lasting Durable Performance

Clutch sleeve kit for 49cc/100cc bike motors, single unit
✔️ Durable copper-brass brushing sleeve for 49cc/100cc 4-stroke engines

Turn your regular bicycle into a motorized ride with a clutch-driven starting system. This kit is designed for 49cc and 100cc four-stroke engines and is commonly used to upgrade or replace stock drivetrains on on-road bikes, cruisers, and mini bikes, delivering stronger power and smoother starts.

✅ Inner shaft diameter: 16 mm (5/8 in)
✅ Brushing outer diameter: 20 mm (25/32 in)
✅ Length: 25.23 mm (≈0.99 in)
✅ Material: Copper
✅ Engine compatibility: 49cc/100cc 4-stroke bikes
✅ Easy to install with minimal readjustment

💡 What is a clutch sleeve used for in a bike engine and why upgrade? A practical overview for everyday riders. - Handy upgrade for 49cc/100cc four-stroke motorized bikes - Improves clutch engagement and reduces noise - Easy DIY installation with minimal readjustment