OS MAX 37SZ-H Ring w/o Drive Washer

Following on from the concept developed in the 70SZ-H, the latest 37SZ-H brings a new level of performance to '30-class' helicopters.

Just about everything has been changed compared to the 32SX-H in the pursuit of power and control. That super-rigid crankcase contains a highly developed, ringed piston/liner set and optimised crankshaft for the right combination of power and smoothness. The new carburettor has been purpose designed for precision control and is capable of being operatedby push-pull linkages if required.

This is the perfect engine to compliment your new Hirobo Sceadu Evo and move your flying on to a new level.