Main Services Casts Price list Gallery Contact   Brake and clutch relining for all types of vehicles. Kardan for BMW motorbikes. CNC milling machine produced by the company. Several examples of engine parts usually manufactured or renovated. One of the casting, which is delivered as a new part or renovated in case of minor stage of damage. BMW motorbike transmission. Trojan co. can produce a completely new transmission or any of its part with the high accuracy. Kardan BMW. Engine of NSU motorbike before renovation. Tatra 11 car before completely renovation of engine, gearbox and bodywork. View of Tatra 11 engine. Newly manufactured frame of Velorex three-wheeler.