New Complete Jackshaft Kit, 5/8" by 16". This is very popular for use on Go Karts and Mini bikes. This Kit includes 5/8" by 16" Jackshaft, 8 Tooth Sprocket with built in key for #40/41 chain, 5/8" ID. 14 Tooth Sprocket for #40/41 Chain, 5/8" ID. 2 Bearing hangers, 2 Sealed, Precision Bearings. 1 Key, 3/16" by 3/16" by 3/4". 2 Collars 5/8" ID. PLEASE CHECK OUT OUR STORE FOR MORE EXCITING AND HARD TO FIND PARTS FOR GO KARTS, MINI BIKES, DIRT BIKES AND ATVS