STS12 (#1011) Standard Series Cylinder Contents : 2.11cc Bore: 13.80mm / Stroke: 14.00mm Crankshaft : 12mm SG or STD Carburetor : 3 Needles Slide 5.5 mm Piston / Sleeve : ABC 3P Glow-plug : Standard Use : 1/10 on-road;1/10 off-road Manual Download Suspended!