O.S.SPEED Engines OSMG2150 MAX-B21 Car Engine OS B21 .21 Nitro Offroad Buggy / Truggy Motor

 MAX-B21 is easy to use from entry-level users to sports users and has excellent cost performance. Based on the O.S.SPEED series engine, it has a well-balanced combination of smooth speed and power delivery and can be used in both on and off-road racing situations.