This is the 3 port .21 Off-Road Ultimate MTS Ceramic Competition Engine. Made by the prestigious Japanese O.S. Engines brand and based on their long stroke Spec II configuration, the MTS features a DLC coated crankshaft with two balanced tungsten, modified backplate, and 21J3 carburetor to improve performance. The MTS is a great choice for use in nitro 1/8 buggy and truck applications.
This engine provides amazing power and great fuel consumption.