49cc 2-stroke friction drive motorized bike conversion kit
suitable for 12'' to 26'' bike
We also have 38cc four stroke,49cc four stroke engine.Please contact us for more details.
Sea mail: US$81
Air mail: US $116
Speed post: US$135
ＮＥＷ ＰＲＯＤＵＣＴ！The movement of rear wheel is due to the friction brought by the rotator !
It is very smooth,quiet, durable and reliable!
It is also easy to start on first pull.
This kit is very easy to install!
It includes user manual which help you to maintain the engine!