Complete 5/8" X 16" Silver Galvanized Jackshaft kit will work for 40/41/420 chains.
This is very popular for use on Go Karts and Mini Bikes.
Performance-wise, the jackshaft kit significantly reduces the strain on your engine by distributing power more efficiently. This results in better acceleration and increased torque, making it an ideal upgrade for anyone looking to squeeze more power out of their ride.
Package Include:1 * 5/8" by 16" Silver Galvanized Jackshaft 3/16" Keyway + 1*8 Tooth Sprocket with built in Key, 5/8" ID + 1*14 Tooth Sprocket, 5/8" ID + 2*Bearing hangers + 2*Precision Bearings + 2*Collar + 6*screws
It may require occasional maintenance, like lubrication and adjustments, to keep it in optimal condition.