HPi Milwaukee-Eight® throttle bodies are designed to allow more airflow over the stock 55mm throttle body.  


Offering a 58mm and 62mm in size, the HPi throttle bodies are manufactured out of 6061 billet material and include a fully CNC ported aluminum intake manifold.  


Other features include:

  • Stock location for air cleaner bolt pattern

  • Cruise control compatible

  • Includes fresh rubber seals (utilize stock flanges & throttle body bolts)

  • Made in USA

  • Anodized Throttle Body available per request at additional lead time and additional $150

Same routine as the earlier Touring electronic throttle-by-wire units, Horsepower utilizes the stock core electronics, and new units are turned around in about 3-5 business days.


*Stock units are tested when received to assure stock electronics are working properly, then re-tested after assembly to assure everything was assembled correctly.

The upgrades don’t stop at throttle bodies.  HPi also offers their V2 air cleaner design for the Milwaukee-Eight® models equipped with a contour designed velocity stack for maximum flow.  Upgraded Injectors starting at 6.2 gram per second rating are also available for the larger cubic inch applications.

*Please Read before sending in your unit:

  • Unit must be stripped of all gaskets and mounting hardware (fuel rail, map sensor, injectors) or there will be a $50 disassembly fee.  Do NOT remove internal electronics.

  • Make sure the unit is packaged in a sturdy box and secure with bubble wrap so it is not damaged in transit.  Any damaged throttle bodies will be returned as is.  It is smart to insure your package with the shipping company.  You do not need to send in the stock manifold.  You will not get back the stock throttle body, the unit will be scrapped.

  • Throttle body must be in good working condition before sending in.  If you aren't sure if it works, don't send it in!

M8 Throttle Body Part #'s               M8 Tunnel Ram Part #'s

HPI-58M8-19   $675                       HPI-SM8-TR    $410

HPI-62M8-19   $675                       HPI-62M8-TR  $410
HPI-70M8-19   $725                       HPI-70M8-TR  $510

Web Site by Laura Light © 2020-2021 Horsepower Inc. All Rights Reserved.  
Harley-Davidson® is a registered trademark and is used for reference only.  Legal Disclaimers

  • Instagram - Grey Circle
  • Facebook - Grey Circle
  • Twitter - Grey Circle
  • YouTube - Grey Circle