4 stroke head porting. Porting 4 strokes since before they were cool!! Nearly 20 years porting 4 strokes and countless hours testing with a superflow flow bench and velocity meter there is nothing left to chance with your cylinder head. No guess work just improved flow and velocity. With improved port shape and flow your head will have improved power across the whole range with no loss of reliabilty.

Superflow sf110 flow bench used to verify all head mods

tranny surface treatment reduces drag and friction which improves shifting and frees up power

setting up a head for seat replacement

crankshaft rebuilding, true to within .001" built with custom jig. Assembled true ready to go. Balancing available.