75 Tooth Sprocket 35 Chain And 108 Link Drive Chain Upgrade Kit, 54mm Bore, For Razor MX650 MX500 SX500 RSF650 Electric Dirt Bike With MY1020 Motor, Beefed Up Replacement Parts, Performance Boost

75T Sprocket & 108-Link Chain Upgrade for Razor Dirt Bikes
✔️ Includes 9T/11T/13T sprockets, 75T rear, 108-link chain; single kit

An upgrade kit designed for Razor MX650, MX500, SX500 and RSF650 electric dirt bikes with MY1020 motors. It enhances drive performance by swapping in a stronger rear sprocket and a robust 108-link chain for smoother power transfer.

✅ 75T rear sprocket with 54 mm bore (2.1") and overall diameter 231 mm (9.1") for solid drive performance
✅ 35 chain with 108 links, optimized for MY1020 motor setups
✅ Mounting dimensions: motor sprocket mounting diameter 10 mm (0.4") length and 8.5 mm (0.34") width
✅ Includes 9T, 11T, 13T motor sprockets for torque-speed tuning and off-road ability
✅ Compatible with Razor MX650, MX500, SX500, RSF650 electric dirt bikes and related MY1020 motors

💡 What is a motor sprocket upgrade kit used for on Razor electric dirt bikes?

A handy upgrade that boosts torque, acceleration, and adaptability for off-road riding. It helps you tune power delivery by swapping different sprockets and keeping a robust drive chain in place.

- Improves starting torque and traction for hills and rough terrain - Lets you choose between 9T, 11T, and 13T sprockets for torque-speed balance - Compatible with Razor MX650, MX500, SX500, RSF650 models with MY1020 motors - Includes a 75T rear sprocket and 108-link chain for solid power transfer✝️