It’s time to step up your nitro game. Dynamite economically delivers explosive power, performance and reliability with the all-new Mach 2 series engines. This .21 SG nitro engine includes a 13mm turbo ported crankshaft with a 6 port piston and sleeve which equates to high horsepower, superior torque and excellent efficiency only delivered by high price-point engines. Based on the principles of the Dynamite Platinum .21 XP engine, the Mach 2 Series feature many of the same elements and technology used in producing the ground pounding power of the Platinum XP. With an RPM range up to 33,000 and 2.3HP output, the Dynamite Mach 2 .21 SG is an excellent motor for the competitive racer down to the backyard basher.