Airsal 70cc racing cylinder kit, complete with gasket set, piston, piston rings etc The T6 Tech-Piston matches the T6-Racing exactly and also features a 2-piece outlet, but the difference lies in the high quality piston. Aluminium construction with hard chrome lining. The T6 Tech-Piston has great drive from low down and acceleration. Can be tuned for up to approx. 12bhp A larger carburettor should be used. Supplied with cylinder head.