Murnan Modified Motors, in conjunction with Novarossi, have introduced what they claim to be the ultimate .12 on road racing engine, the M353R Modified. Based on the Novarossi 353, it has undergone the Murnan treatment and so the engine internals have been hand selected to ensure the best tolerances and then modified to Murnan Modified Motors specifications. This new engine includes a rear ceramic bearing and the cooling head has been etched with special marking to denote this special edition engine. Thought has gone into making the most powerful engine possible, while still making more than 5 minutes of runtime. This engine is intended for serious racing applications.