New manifolds and Pipes have been specifically developed for the S line. We recommend to use the new engine together with Reds Racing 2113 pipe and S manifold, TS7 glow plug and Reds Racing Gt Clutch system. SPECIFICATIONS Category: 1/8 GT Displacement [cm^3]: 3,5 Bore [mm]: 16,05 Stroke [mm] 167.3 Inlet ports: 5 Outlet ports: 1 Crankshaft: balanced