ProTek RC CR21 Crankshaft

head is made from CNC machined aluminum. The head has been drilled to increase the surface cooling area, as well as to remove weight for reduced center of gravity. Package includes one ...

replacement head button is intended for the CR21. The combustion chamber is polished smooth to promote engine performance. The head button is installed between the engine case and the cooling head. Package ...

Package includes one replacement factory assembled R03 carburetor. This can also be used with the Samurai S03 .21 engines as a tuning option when more overall power is needed. This product was added ...