Boat reduction gearbox PRM 80 (2.04:1, 2.50:1 @ 5000 RPM)

boat reduction gearbox
boat reduction gearbox
boat reduction gearbox
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Application domain
for boats

Min.: 0.8 kW (1.1 hp)

Max.: 35 kW (47.6 hp)

Rotational speed

5,000 rpm (31,416 rad.min-1)


Simple mechanical operation, lightweight, compact & rugged The PRM80 gearbox is designed for use in pleasure craft where a simple lightweight transmission is required. The cone clutches for both ahead and astern are mechanically operated and require no adjustment. The gearbox is purpose built to operate with standard rotation engines i.e. providing a clockwise rotation of the gearbox input shaft when viewed on input. In forward drive the output shaft rotates opposite to input shaft therefore requiring a right hand propeller. The reduction ratios offered are 2.04:1 and 2.5:1 with a common astern ratio of 2.5:1 The heavy duty aluminium gearcase is externally ribbed for strength and heat dissipation.


*Prices are pre-tax. They exclude delivery charges and customs duties and do not include additional charges for installation or activation options. Prices are indicative only and may vary by country, with changes to the cost of raw materials and exchange rates.