Description
Fitment: 2001-2005 Harley Delphi (Cable Driven) Models FLH/FLT Touring, Softail and Dyna
Horsepower Inc 51mm Cable-Driven Delphi Throttle Body
The Horsepower Inc 51mm throttle body is a proven performance upgrade for 2001–2005 Harley-Davidson Twin Cam motorcycles equipped with Delphi EFI. Designed for cable-driven applications, this throttle body delivers increased airflow and sharper throttle response, making it an excellent choice for Stage 2 and Stage 3 engine builds.
Because airflow is critical to making horsepower, upgrading to a larger 51mm throttle body allows your engine to breathe more efficiently. As a result, riders experience smoother power delivery and improved throttle control throughout the RPM range.
Key Features & Benefits
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51mm bore for increased airflow and performance
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Cable-driven Delphi design for precise throttle control
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Direct bolt-on fit for 2001–2005 Twin Cam EFI models
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Improves throttle response and overall engine efficiency
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Compatible with stock electronics and factory systems
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Ideal for performance engine builds and high-output applications
Built for Performance Riders
In addition to its increased airflow capacity, this throttle body is engineered to maintain reliability and drivability. It bolts directly to factory mounting points and integrates seamlessly with OEM components, which makes installation straightforward while supporting aggressive performance upgrades.
Whether you’re building a strong street motor or dialing in a high-performance Twin Cam setup, this Horsepower Inc throttle body provides the airflow needed to support additional horsepower and torque.
Fitment
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Harley-Davidson Twin Cam models
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Years: 2001–2005
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Fuel system: Delphi EFI
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Throttle type: Cable-driven
Add High Flow Injectors to your Throttle body
Horsepower Inc High Flow Injectors are a direct drop-in replacement for Harley Davidson Motorcycles. These injectors feature a specifically engineered spray pattern that optimizes fuel atomization. We have several options of fuel delivery to choose from depending on your application.
