High Quality, Well Design Casting Cylinder with Perfect Enlarge Porting.
Light Weight Aluminum Alloy Piston, Special Coating Rings and Head.
Stock Stroke Race Crankshaft.
High RPM for Better Power and Top Speed. Also Reliable for Street Riding.
47 mm Cylinder, Piston, Rings and Head.
41.4 mm Standard Stroke Race Crankshaft.
Whole kit =3.7 kg.
Performance Engine parts. Must Be Built by Skilled Engineer.