SZ Bikes manufactures, builds and sells custom motorized bicycles and parts.
Watch this video that features a Track Racer Motorized Bicycle. This is one of the cools bikes I have witness.
Seeutek 2 Stroke Cycle Motor Engine Kit Introduction: 80CC 2-stroke engine kit will fit 26″ or 28″ Bicycle. This bike
Black Motorized Bicycle Gas Tank Product Description Package Included: 1x Gas Tank with Gasoline Tank Cap All Mounting Hardware Needed