RUTU 420 Chain Sprocket Rear Sprocket 45 Tooth 76mm for Chinese 50 70 90 110 125 140cc 150 160 170 Cc Apollo RFZ CRF50 XR50 SDG IMR SSR YCF Kayo Thumpstar Coolster Pit Dirt Motor Bike Motorcycle
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- Fittment：This is a replacement motorcycle or dirt bike sprocket is compatible with Chinese 50 70 90 110 125 140cc 150 160 170 Cc Apollo RFZ CRF50 XR50 SDG IMR SSR YCF Kayo Thumpstar Coolster Pit Dirt Motor Bike Motorcycle
- Materials：We pride ourselves on the quality at which we produce this rear dirt bike sprocket. The sprocket gear itself is made from high-quality 45# steel, with excellent corrosion resistance and then heat-treated for a harder, stronger, and longer-lasting composition
- Highly Efficient: The chain sprocket is precision engineered to provide excellent chain grip. This helps drive efficiency so your motorcycle chain stays stable and consistent as you ride
- Features：The Sprocket helps reduce friction when the chain turns on the sprocket teeth. This helps prevent premature chain wear and prolongs its lifespan
- Size：This motorbike sprocket kit compatible with a chain size of 420, pitch of 1/2″, roller width of 1/4″, roller diameter of 5/16″ ,the sprocket thickness is 6mm/0.239″,the inside diameter 76mm(3″), the minimum hole diameter is 8mm(0.31″),we also provide 4 screws
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