9 Tooth Five Eighth Inch Bore Jackshaft Sprocket For 40 41 420 Chain Durable Replacement Part For Manco American Sportworks 8720 1125 Go Kart Mini Bike Performance Upgrade

9-Tooth 5/8 Bore Sprocket for #40/41/420 Go Kart Chain
✔️ 1x 9-tooth bore sprocket; 5/8 in bore; replaces 8720-1125

This single replacement sprocket is designed for go-karts and mini bikes using a #40/41/420 chain. It directly replaces part 8720-1125 and fits a 5/8 inch bore in compatible hubs, upgrading drive performance.

✅ 9-tooth sprocket for #40/41/420 chain
✅ 5/8 in bore size for standard hubs
✅ Replaces part 8720-1125
✅ Durable construction for go-kart and mini bike use

💡 What is a bore sprocket used for in chain drive systems? This handy piece keeps the drive train aligned and transfers power smoothly. - 9-tooth fits #40/41/420 chain - 5/8 in bore matches standard hubs - Replaces 8720-1125 in older setups - Ideal for go-kart and mini bike projects