new jack shaft kit/Jack shaft kits/bicycle engine kit sparts from Chinese manufacturer

Jackshaft kits.

Including:

1:block pad
2:flywheel
3: bearing
4:bearing
5:middle-mounted plate
6:right and left-mounted plate
7: right and left-mounted plate
8:crankshaft
9:gasket and pin of crankshaft
10:gearwheel
11: pinion
12:optic axis
13:U bolt
14:U bolt
15:sprocket sets
16:crank(left side)
17:crank(right side)
18:chain sets

The advantages of New Jack shaft kit as below:

A: make your motorized bicycle easy start

B: can ride bike normally after fit the new jackshaft

C: lower noise
D: cool shape and beautiful appearance

E: easy to assemble engine kit