[50cc 40mm]
[70cc 47mm]
50cc piston diameter 40mm, piston pin 12mm70cc piston diameter 47mm, piston pin 12mmTips:1. Please confirm the parts will be fit on your scooter / motorcycle before you place the order.2. If you do not know whether the parts will fit or not, Please send us the photo of your motorcycle or engine by Message.3. Some Modified Spare Parts is a small change on your original motorcycle or engine.