Performance Factory has been known for building great racing engines over the time we have been in business. We offer everything from Carb modifications to fully modified 2 and 4 stroke race engines.

2 Stroke Head Mod: $75.00

2 Stroke Cylinder Porting: $250

4 Stroke Head Porting and Polishing: $400

4 Stroke Carb Modification: $100

Split engine cases: $375

Crank Rebuilding and Truing: $100

Top End Rebuild 2 Stroke: $150 + Parts ( includes complete power valve inspection and cleaning )

Top End Rebuild 4 Stroke: $200 + Parts ( includes removal and inspection of all valves, guides and seals, valve adjustments, R&R piston and rings, PARTS NOT INCLUDED)

4 Stroke Valve adjustment: $150 ( includes shims )

Stroked Crank Assemblies: CALL FOR PRICING