The most powerful Sullivan 2.50' starter. Features a machined aluminum drive cone with pulley groove, 2.50' diameter steel body and gold end caps. 12 or 24 VDC operation, maximum 80 amps. 340 in-oz (240 N-cm) of stall torque at 12V, 680 in-oz (480 N-cm) at 24V. 4800 no load RPM at 12V, 9600 no load RPM at 24V. For all engines up to 2.4 cubic inches (40 cc) and many to 3.5 cubic inches.