AT Power Honda DC5/EP3 55mm Individual Throttle Bodies (ITB's)

AT Power Honda DC5/EP3 55mm Individual Throttle Bodies (ITB's)

AT Power's Individual Throttle bodies are renowned in the industry for making the best product possible, where other use inferior manufacturing techniques, these are all machined from billet aluminium and hard anodised for a finish that will last many years. There are many features that seperate them from the competition, such as the unique patented 'Shaftless' throttle design combined with a knife edged butterfly providing improved air flow and increased engine performance.

These Direct to head Individual throttle bodies are designed to fit the OEM Intake ports for the Honda K20a/K20a2 and K24 engines, commonly fitted to Honda Civic EP3, Integra DC5 and many K-Swap vehicles. This kit comes complete with throttle linkage, fuel rail, 3D Printed SLS curved 30 degree extensions, Ram Pipes and Wabash TPS Sensor. The SLS 3D Printed extensions are designed to ensure the throttles are horizontal when the engine is mounted in the orginal 15 degree angle.

At T7Design we stock these AT Power ITB's in Black finish ready to dispatch, avoid the 8-12 week lead time. With a wide range of accessories and options we can adapt each kit to meet your needs. Please see our other listings for accessories to complete the installation such as Air Filters, Throttle cables & Syncrometers.

Features & Benefits

• Unique patented ‘Shaftless’ technology
• Knife edged butterfly valves
• Billet Aluminium construction
• Curved 30 Degree SLS 3D printed Extension Tubes
• Standard EV14 Injector Fitment
• Centre Pull Throttle Linkage
• AN06 Fuel Rail Fittings

Specification	Metric	Imperial & Other
Weight	3.5kg	7.71618lb
Blade Diameter	55mm
Engine Compatibility	K20A, K20A2
Material	Billet Aluminium Hard Anodised Black

Quantity	Description
1x	AT Power Honda DC5/EP3 55mm Throttle Housing Assembly
1x	Wabash Sensor 971rps Throttle Position Sensor (TPS)
4x	AT Power 3D Printed Extensions 55mm 30 Degree
4x	AT Power 55mm Throttles Ram Pipes

AT Power developed our patented 'Shaftless' technology in 2005 to overcome the only significant disadvantage of the butterfly throttle design. While the butterfly throttle has always benefitted from excellent idle and part throttle control, it has been limited by the disturbance to the airflow and the blockage to the cross-sectional area of the air passage by the blade and rotating shaft.

One area where traditional butterfly throttle bodies are lacking is that the butterfly valve is held via a thick shaft and two screws. The shaft and screws cause disruption to the airflow, reduce flow velocity and hamper the performance of the engine. To rectify this problem, AT Power developed an award-winning design concept where the blade is supported at each end and has no shaft in the throttle bore. The thickness of the blade is reduced to the minimum achievable, with knife-edged leading and trailing edges and the rotating shaft does not ingress into the airflow passage.

Our patented technology maintains all the benefits of the butterfly throttle system while improving the part and fully open airflow characteristics. Our ‘Shaftless’ system can improve flow by up to 10% on common throttle body sizes. In fact, tests show an AT Power throttle has 99.5% the same flow as having no butterfly at all. The minimal disruption caused by our ‘Shaftless’ blade allows us to specify a smaller throttle bore, resulting in higher airflow velocity resulting in a higher volumetric efficiency.

Inlet geometry is an area critical to engine performance, the way in which the airflow passes through the internal passages of the throttles, over the butterfly valve, and into the inlet port, will make a significant difference to the power output and fuel efficiency of an engine. This is an area in which AT Power has invested significant R&D to provide the optimal solution. Combined with precision CNC machining, AT Power can manufacture small, lightweight throttles offering the same performance as a much larger system.