Description
Horsepower Inc. 5.3 GPS High Flow Fuel Injectors
If your Harley-Davidson engine needs more fuel, stock injectors can limit performance. Horsepower Inc. 5.3 GPS High Flow Injectors solve that problem by delivering consistent fuel flow for upgraded and tuned engines.
These injectors flow 5.3 grams per second, which makes them ideal for performance builds. As engine output increases, proper fueling becomes critical. Because of this, these injectors help maintain correct air-fuel ratios under load.
In addition, improved fuel delivery supports better throttle response and smoother operation. Riders notice more consistent performance, especially in high-demand riding conditions.
Each set comes as a precision-matched pair. This design ensures balanced fueling between cylinders. As a result, tuning becomes more stable and predictable. Balanced fueling also helps protect engine components over time.
Installation is straightforward. These injectors replace factory units directly. However, proper tuning is required to achieve the best results.
Key Features:
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Flows 5.3 GPS for performance applications
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Sold as a matched pair for balanced fueling
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Designed for modified Harley-Davidson engines
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Improves throttle response and fuel consistency
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Ideal upgrade when stock injectors reach their limit
Why Choose These Injectors?
If your build demands more fuel, these injectors deliver it reliably. They support increased horsepower while maintaining smooth drivability. For that reason, they are a smart upgrade for serious performance riders.





