SMJ Kabuto 21XB2 Power & Eco spec .21 engines

Coming from SMJ are the new Masayuki Miura optimised 21XB2 Power and Eco Spec engines. The long-stroke engines offer a wide power range and high torque values with the Power Spec variant being ideal for high speed off-road tracks and 1/8th GT cars while the Eco Spec power plant is best suited for low-grip or bumpy tracks. Also the Power variant makes use of a 7mm venturi carburettor while the Eco relies on a 6mm variant. Both come with a DLC-coated and tungsten-balanced crankshaft, they feature ceramic rear bearings and come pre broken-in and with a new-style low-profile cooling head.

Source: SMJ [smj-rc.com]