HPi 45 mm Throttle Body and M-8 Intake Manifolds
Indianapolis based performance specialist Horsepower Inc.'s M-8 intake manifolds are engineered out of aluminum and fully CNC-ported for a quick and easy performance upgrade.
Able to bolt to a stock throttle body, they include an O-ring and fresh set of intake seals; stock flanges can be used.
Also seen here, HPi has engineered a replacement 45 mm throttle body to fit 2001-2005 Big Twin/Twin Cam H-D models (excluding 2001 Touring models).
The upgrade will bolt to the existing stock intake manifold for an inexpensive upgrade, "complete with all the performance features of the HPi brand."
Those features include a zinc-coated throttle shaft, double sealed roller bearings and factory OEM bolt pattern. No dyno tuning or retuning required.
HORSEPOWER INC