Top Shelf 12T 420 Chain Front Sprocket For 50CC 70CC 90CC 110CC Mini Bike Go Kart Solid Steel 17mm Bore Smooth Handling Durable Construction Upgrade Your Ridin Rig Today
✔️ 12T 420 Chain Drive Fits 17mm Bore For Mini Bike Engines
This solid metal drive unit swaps out worn gears on lightweight dirt cycles and recreational utility carts. You slide the hollow center over the crankshaft and lock it down to transfer raw horsepower straight to the rear wheel.
✅ Cuts Exactly Twelve Teeth Into Thick Gauge Steel Alloy For Heavy Loads✅ Matches Standard Four Two Zero Roller Chains On Most Small Engines
✅ Centers Over Seventeen Millimeter Shafts Without Any Wobble Or Play
✅ Ships As A Single Replacement Part Straight Out Of The Box
💡 Why change tooth count when tuning a small displacement motor setup? Adjusting the main drive ratio is the handiest trick to dial in better throttle response without blowing up components. You get precise control over how quickly the machine launches and how far it stretches out on open ground. - Lower steps give you serious grunt for climbing tall logs and mudding through tight woods - Twelve tooth profiles hit the sweet spot for general track work and weekend pit racing - Higher jumps push more top speed along paved roads but require a stronger clutch to engage smoothly
✝️