New 5 Port .21 GT Engine!!Bore = 15.89mmDLC Coated Crankshaft3x Tungsten Balanced10 Rib Cooling Head7.0mm Carb VenturiFront Bearing from JapanRear Ceramic Bearing from GermanySelected & Matched Pi..

Especially made for 1:8 GT! Available in different versions:single engine only..

For 1/8 nitro Offroad and 1/8GTMAX-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 combin..

For 1/8 nitro Offroad and 1/8GTMAX-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 combin..