420 Chain 37 Tooth 58mm Inner Diameter Rear Drive Sprocket Cog For Taotao SSR Coolster Apollo CRF Thumpstar Pit PRO Built Tough Dirt Bikes 50cc 70cc 90cc 110cc 125cc 140cc 160cc Black

37-Tooth 58mm Rear Sprocket for 420 Chain Dirt Bikes
✔️ 37T, 58mm bore, fits 50cc to 160cc dirt bikes with 420 chain

This rear drive sprocket is built for 420 chain setups and fits a wide range of dirt bikes from 50cc up to 160cc, including SSR, Taotao, Coolster, Apollo, CRF, Thumpstar, and Pit PRO models. Inner diameter 58mm (2.28 in), minimum hole diameter 9mm (0.35 in), sprocket diameter 153mm (6.02 in), center-to-center 90mm (3.54 in).

✅ 37 Tooth rear drive sprocket for 420 chain compatibility
✅ Inner diameter 58mm (2.28 in), minimum hole 9mm (0.35 in)
✅ Sprocket diameter 153mm (6.02 in), center-to-center 90mm (3.54 in)
✅ Includes mounting screws (4) and chain buckles (2x 420, 2x 420H, 4x steel)
✅ Pack: single sprocket with mounting hardware and buckles

💡 What is a rear sprocket used for in 420 chain dirt bike setups?

A handy guide for riders. - transfers power from engine to rear wheel using a 420 chain - helps set gearing for acceleration and top speed on 50cc to 160cc bikes - replaces worn parts to keep chain tension and efficiency - easy installation with standard mounting holes and bolts