Airsal have taken the “70” sports cylinder kit and have come up with this “77”cc racing kit. Includes all parts for installation: gasket set, piston, piston rings etc. Cast aluminium for improved heat dissipation with a hard chromed bore for wear resistance. Smooth torque and great performance make this cylinder great value for money. Especially for the Beeline, CPI, SM, SX, SMX vehicles. Exhaust manifold mounting points are threaded on this cylinder rather than the usual push-on on AM cylinders.