SPD 2017-2020 Ford F-150 Raptor 3″ HX Series Helmholtz Resonated Pre-Axle Dump

Our HX Series Helmholtz resonated pre-axle dump is the last component of the ultimate Gen2 Raptor or HO Limited F-150 exhaust system. We designed this muffler for trucks with special rear suspensions that will not allow dual exhaust over the axle. Combined with our equal-length trombone (RDFR20EL), no better-sounding Gen2 Raptor exhaust exists! HX Series mufflers are straight-through, with no reductions or chambers inside the muffler, which guarantees ultimate flow and performance. HX Series mufflers use hard-pack sound-dampening material that will not break down. Other brands use loose pack dampening material ( glass or metal wool/fibers), which breaks down from the harsh exhaust vibrations. An x pipe was designed to blend the exhaust tones after the equal-length trombone.

The primary purpose of the Helmholtz resonator on this exhaust system is to reduce in-cab noise/drone noise without making the exhaust too quiet. You will still enjoy the exotic exhaust notes of equal length without the drone by targeting and neutralizing specific drone frequencies. We highly recommend this system for aftermarket downpipes. This muffler upgrade will save more than 30 lbs of weight from the back of your truck.

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At Function Factory Performance, customer service is our top priority. Finding the right parts can be overwhelming, so we’re here to make the process smooth and enjoyable. We’re always ahead of the curve with our commitment to education and awareness. Let’s make this experience simple and awesome together! Don’t hesitate to call us at (480) 576-8606 or click here to reach us via email.

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