72cc 47 mm High Performance Big Bore Cylinder Kit for 50cc QMB139 Scooter Engines Fit Right 12 Volt The rear dual shock absorber

The rear dual shock absorber assembly for Hiboy® S2 and S2 Pro electric scooter is basically the left and right side shocks mounted on a cross-bar as a single unit

Although some components may be compatible with other gas engines

As an authorized parts dealer for ActiveCare scooters and power chairs

Voltage regular for Arctic Cat BearCat

Note: This is for a single key that is the original unit on the Drive Medical Cobra GT4

72cc 47 mm High Performance Big Bore Cylinder Kit for 50cc QMB139 Scooter Engines Fit Right 12 Volt The rear dual shock absorberOur 72cc scooter big bore cylinder kit is great for increasing overall performance on small under powered 50cc QMB139 scooter engines. Engine kit increases engine bore size from 50cc to 72cc and includes everything shown in the image; cylinder, rings, and gaskets. This 72cc scooter engine kit increases low end acceleration as well as top speed. This high performance scooter big bore engine kit is easy to install. Combine with a high performance