Front sprocket :420 Pitch ，17mm Shaft Hole ，16 Tooth ( We also have 14T,15T,17T in stock , )
Some engine with 20mm shaft, we also have ,420 Pitch,20mm Shaft Hole, 14T,15T,16T For sale,if you need other size, Pls leave a note in your order )
Rear sprocket ：420 Pitch ,52mm center hole,48 Tooth
Chain: 420 Pitch 140 links
Package include :1x front sprocket +1x rear sprocket +1x Drive chain