Need to feed some serious horsepower? Have a nitrous or forced induction powerplant that also sees street duty? Holleys Dominator(TM); in-line fuel pumps are the answer! The patent pending twin pump design allows you to use one pump for cruising and both pumps when you activate the nitrous switch or start building boost! By staging the second pump, you eliminate the unnecessary recirculating and heating of extra fuel which can lead to poor performance and hot fuel issues. For hard core race vehicles, both pumps can be wired for full time duty to get maximum performance and are proven with 18.5 volt compatibility at pressures up to 80 psi. At only 5.1 lbs., they weigh half a pound less than competitive 1000+ horsepower pumps yet have twice the features!