Parallel double cylinders, the pistons move down and up  ditto with the next, make the engine working more smooth  and reduce the engine vibration.

Using chain drive, avoid gears noise

Automatic tensioning mechanism with spring, according to  the automatic adjustment of tensioning of the chain tension,  reducing the chain drive noise, increased service life of the  chain.

Adopt imported high-precision 9 tooth chain, engine quieter,  chain life is much longer.

Castiron arm bracket can effective eliminate the noise  caused by the changes in valve due to thermal deformation.  Dual carburetor structure, mixed combustion better, lower  fuel consumption, better emissions.

This engine is the parallel double cylinders 4-stroke engine,  It' s powerful and working smooth.