MTX 857 Steel Rear Sprocket #520 (39T) (11-5Y1-39) mini Quadrazone compound technology features 4

Quadrazone compound technology features 4 zones of compound working together to ensure optimal dynamical performances and extended tyre durability

Heavy duty waterproof breathable and insulated with removable liners

Integrated mounting system with aluminium Durflex hooks – no additional mounts or hardware required

CVT transmission

This can cause stator contact or even crankshaft damage

MTX 857 Steel Rear Sprocket #520 (39T) (11-5Y1-39) mini Quadrazone compound technology features 4MTX OE Steel sprockets are strong and durable heat treated and hand finished for longevity. Front sprockets are constructed from SCM420 chromoly steel alloy where rear sprockets are constructed from C45 high carbon steel with a Zinc electroplated finish. Designed as an OEM replacement to exceed OEM specifications at a fraction of the price making them your ideal cost effective solution for replacing old worn and warped sprockets. OEM replacement