The 321B “Samurai” Off-Road 3-Port engine features a short-stroke, turbo head, rear ceramic bearing and an easy-to-tune carburetor. The handcrafted powerhouse has been built meticulously by a world-renowned Japanese engine manufacturer, to the specs of A Main’s top pro drivers. It comes standard with a P3 turbo glow plug, ABC piston and cylinder, 7mm and 8mm elliptical restrictors and a strengthened black-coated case.
