Built for big-bore work, a Horsepower Inc. Throttle Body is a critical component for realizing the biggest possible gains on your Delphi fuel-injected Twin Cam powered Harley-Davidson motorcycle. That is to say, in order to truly take advantage of your engine’s increased combustion chamber size, you need to get more air in there as efficiently as possible.

This is the throttle body for the job.

Each Throttle Body comes ready-to-install with your bike’s remaining stock components. It’ll bolt straight up to the OEM Delphi-pattern intake assembly. The fact that it employs everything you just removed from your stock throttle body, makes installation a snap.

Looking inside, the hand-ported intakes are a work of art. Just check out how smooth that is with your finger! Once you’ve got everything put back together, your right hand will approve of the smooth ball-bearing throttle mechanism as well.

For the big bore builder looking for unlimited possibilities, this is the throttle body for you!

Each kit ships with the throttle body, intake flanges and seals. You can read more about these kits on our website here. Just call us on 888.575.6570, send us a PM here or email forums@partsgiant.com along with the model and year of your Twin Cam and we’ll get back to you right away.

 

Do you have HPI-58MF6-18 ? I only see a 55mm available.

 

It looks we only have access to the 51mm and 55mm throttlebodies at this time.