The Bun Freestyle engine kit includes: Cylinder (w/ Sleeves), Cylinder Head ,(2)Piston Kit , (2) Head Dome , Girdle Bolt Kit , O-ring Kit , Base Gaskets , Mod Crank Case , Billet Valve Base , 10mm Stroker Crank Shaft , Crank Seal ...etc. The crankshaft is available in stock, 8mm and 10mm stroke according to the riders needs. The pneumatic power valves increase dramatically bottom end acceleration and throttle response.
