$275

                                                       2006 - up 46 mm cable driven.

      This is Harley's best throttle body to date. Works very well at 46 mm but can easily be enlarged to a 50mm. This is a basic change the throttle plate and blend all radius's in the body of the throttle body, open port runners to the match the heads. Here again i have found 1.700 to be the best overall size.

                                                         

     

     

      Throttle Bodies

           

 2008 to present Delphi fly by wire, (FBW) 50mm, no throttle cables.    

     The early 2008-2009 throttle bodies can be bored out to 54mm by making the throttle plate larger. I also go inside and clean all the casting debris out and radius the corners. i also match the port runners to the heads. These can be from 1.650 to 1.800 depending on the size of the motor.

The late model Fly By Wire throttle bodys 2009 and up are not workable.

The facory changed the inside dimensions and made it so it can not be bored any larger.

This is where the S&S throttle hog and the HPi throttle bodies can be used. Thes companies have

casted new throttle bodies that can be from 50mm all the way out to 70mm. We need to use the stock internals from the original throttle body and use them in the new castings to make a throttle body thesize you want or need.

Here is an example of the difference with the early and late FBW throttle bodies: