Horsepower Inc (HPI)

Horsepower, INC #HPI-55D1-16B - Big Bore Throttle Body - Black - 55 mm - Twin Cam

Big Bore Throttle Body - Black - 55 mm - Twin CamFeaturesIncludes throttle body, CNC ported intake manifold, throttle cable bracket, intake flanges and sealsFlow bench-tested and dyno-proven to...

Horsepower, INC #HPI-51D1-16B - Big Bore Throttle Body - Black - 51 mm - Twin Cam

Big Bore Throttle Body - Black - 51 mm - Twin CamFeaturesIncludes throttle body, CNC ported intake manifold, throttle cable bracket, intake flanges and sealsFlow bench-tested and dyno-proven to...

Horsepower, INC #HPI-51D6-17B - Big Bore Throttle Body - Black - 51 mm - Twin Cam

Big Bore Throttle Body - Black - 51 mm - Twin CamFeaturesIncludes throttle body, CNC ported intake manifold, throttle cable bracket, intake flanges and sealsFlow bench-tested and dyno-proven to...

Horsepower, INC #HPI-55D1-18B - Big Bore Throttle Body - Black - 55 mm - Twin Cam

Big Bore Throttle Body - Black - 55 mm - Twin CamFeaturesIncludes throttle body, CNC ported intake manifold, throttle cable bracket, intake flanges and sealsFlow bench-tested and dyno-proven to...

Horsepower, INC #HPI-D1NJ-1 - Fuel Injectors - 6.2 gm/sec

Fuel Injectors - 6.2 gm/secFeaturesRecommended for "Big Inch" engines with large plenums (120 hp or greater)43% increase in flow over stock injectorsMade in the...

Horsepower, INC #HPI-IF-6E - Intake Flange Set - '01-'05 Big Twin

Intake Flange Set - '01-'05 Big TwinFeaturesCNC-machined 6061 billet aluminum constructionWill not crack or warp like some forged flangesMade in the USASpecsFeaturesIncludes SealsMaterial6061 Billet...

Horsepower, INC #HPI-IF-6L - Intake Flange Set - '06-'17 Twin Cam

Intake Flange Set - '06-'17 Twin CamFeaturesCNC-machined 6061 billet aluminum constructionWill not crack or warp like some forged flangesMade in the USASpecsColor/FinishBlackFeaturesIncludes...

Horsepower, INC #HPI-DPR-1 - Fuel Pressure Regulator

For '95-'98 Touring models with Magnetti Marelli EFI it will take fuel pressure from 62 PSI to 45 PSI.FeaturesEngineered for a direct fit in most OEM fuel-injection applicationsDesigned for greater...

Horsepower, INC #HPI-OC-1 - Oil Filter Mount - Polished

For '99-'06 Twin Cam "A" motors (except '06 Dyna).Features6061 billet aluminum construction with a polished finishOptimized oil passages flow almost 30% more efficiently than others on the...