Specifications

Bicycle engine kit , single cylinder air cooling 2 stroke , Gen4 latest design, 90 days' warranty !! Bottom price from the fact

Pull start Gen4 bicycle engine kit

What is new for the Gen 4 Pull start bicycle engine kit

***New design pull starter , very stronger and long use time than the old one

***New one piece crank , more weight and more balanced and more power.

***New cylinder with bigger intake air hole , takes engine more power.

***1.25mm enlarger size for the intake and exhaust , lead to more power .

***ISO crank shaft bearing, keep higher rotate speed and longer using time.

***High intension Alan screw .black or chrome as your wish.

***24C dual Connecting Rod Needle Bearings, more firm and stronger for the rod pin!

***Gen3 ISO carburator, bigger slide and jet , take engine more power.
***Spring idle pulley , give comfortable to the chain.

***415 Baihe ISO golden or black heavy Drive Chain, not easily broken any more.

***Half round chain link attached in the packing

***Chromed 9 Hole 44 Tooth Drive Sprocket !