topbanner ad

Wednesday, 2 August 2017

Horsepower Inc.

Replacement 51 and 55mm Sportster throttle bodies

Described by Indianapolis based Horsepower Inc. as the only Sportster throttle body upgrade on the market, their 51mm and 55mm throttle bodies fit all fuel-injected Sportsters and deliver improved airflow over the stock 48mm item.

The kit includes a Billet-Pro air cleaner equipped with a K&N lifetime warranty air filter element (carbon fiber cover sold separately). 
Designed to improve horsepower gains between 8-10 hp, depending on other build modifications, they feature hand-ported intake runner diameters for 1.620 and 1.710 dimensions for both 51mm and 55mm throttle bodies.