We have developed O.S.SPEED R21 Shimo edition collaborated with Takaaki Shimo, a multiple podium winner of the IFMAR 1/8 Racing World Championship. It is a 7-port engine with a new cylinder liner, which has extra holes to reduce overheating. The cooling head and 8.5mm carburetor restrictor are anodi..
This is the O.S. Turbo Speed R2104 .21 9-Port On-Raod Engine Combo with the T-2080SC II Silencer, a factory tuned engine solely developed for 1/8 racing competition. This redesigned engine boasts 9-port piston liner to improve torque in low-middle power range. It also produces enough power as design..