1.fine appearance.free of burs.clean and smooth scavenge ports snd ports and fins,good heet dissipation.

2.cylindee are made of choiced boron alloy cast iron with excwllent wear resistance and good metallographic structure.

3.Clear bore suface cross hatch pattern,goodoil-retaining characteristic,resulting great increase in engine life.

4.Precise machining size good shape and locaion allowance.