XRD have introduced the F.T. Line Atomic .21 nitro on-road engine. The 3.5cc power plant features a completely redesigned sleeve and updated crankcase ports. The new cooling head is machined to sit lower on the crankcase for a low centre of gravity effect and the carburettor is equipped with reshaped needles for improved mixture flow. As with every F.T. Line engine, the unit comes hand-checked with an individual certificate of authenticity.