SG Shaft , 6 Ports, Alum Head This is SH.28 off road competition rear exhaust engine and it's developed especially for 1/8 scale off road racing. Equipped with three needle carburetor, was immediately recognized as being the most powerful engine of the Monster Truck category.
Cublic cpapcity 4.57 cc Bore 18.50 mm Stroke 17.00 mm R.P.M 35000 rpm Power 3.8 hp Weight 350 g Zoom View Exploded View Instruction