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OMB Warehouse stocks the largest collection of mini bike sprockets and partsof the highest quality and durability, manufactured by leading brands and manufacturers. These mini bike sprockets and partsare perfect for almost all mini bike make and models and good as OEM replacement parts. Since mini bike sprockets and parts are available in various sizes and tooth configurations, be sure about your precise needs before placing an order with us. One of our top selling items is the #40/41/420 Chain 48 Tooth Sprocket for Mini Bikes. This 48 tooth sprocket is for use with #40/41/420 chain. It has heavy-duty machined steel construction and you can be sure about its performance even on the most challenging dirt and race tracks. This #40/41/420 chain 48 tooth sprocket for mini bikes seamlessly transfers the radial power of the engine's crankshaft to the drive wheel. Specifications: Weight: 2.55 lbs. Chain size: #40/41/420 Tooth count: 48 Overall diameter: 7-7/8" Central hole diameter: 2" Mounting hole diameter: 3/8" Mounting hole distance (side-by-side): 2" Mounting hole distance (across): 2-9/16". OMB Warehouse also stocks the Sprocket and Clamp Assembly 36 Teeth 9 Holes Sprocket & Sprocket Installation Set for 66cc/80cc Gas Motor Engine Kit. This high performance 36 teeth sprocket works great with both #410 chain and #415 chain