81cc High Performance Cylinder Kit for 50cc GY6 139QMB Scooter Engines Pneumatic Tires Yuasa YB14L-A2 and YTX14AHL

Yuasa YB14L-A2 and YTX14AHL

5" bead width sports the ground-gripping Powertrax C248 Tread and is made by Primo

As an example

Note: This is a rigid rear fender and cannot be used as a brake

then it is this Type 2

81cc High Performance Cylinder Kit for 50cc GY6 139QMB Scooter Engines Pneumatic Tires Yuasa YB14L-A2 and YTX14AHL81cc high performance cylinder kit for 50cc GY6 139QMB scooter engines, by manufacturer NCY. This scooter upgrade kit is a high quality kit that is perfect for upgrading your old 50cc 139QMB engine to 81cc so you dont get left behind in todays fast paced world. Installing this upgrade kit will increase your engine bore size to 81cc, and includes an aluminum cylinder, 50 mm piston, piston rings, and gaskets. After installation, you will see an