Pump and Gearbox Kits for Heavy UsersThere are 6 products.

High pressure pumps with reduction gearbox for direct connection to engines from 5.5hp to 13hp. These are to be bolted directly to a petrol or diesel engine. If you require a larger pump, it is advised that you select a pump with a male shaft then under the "accessories" tab add a gearbox and external unloader valve.