Race-Tour 225 reed cylinder kit with extra boost port added and road tuned. includes: Alloy cylinder. 70mm Meteor Reed piston kit. CNC cylinder head with 8 point mounting. High tensile long cylinder studs head nuts. Exhaust manifold studs and washers. Exhaust deep Brass nuts. Inlet gasket. 4 point exhaust gasket. 0.5 and 0.7mm base alloy gaskets. 4 high tensile head bolts and washers. Uses 200cc inlet stud spacing.