Lexus RC F Cat-Back Exhaust: Invidia Q300 Reviewed

The Lexus RC F cat-back exhaust question almost always ends the same way: owners of the 5.0L V8 coupe want that naturally aspirated 2UR-GSE to sound as ferocious as it revs. After installing and testing dozens of RC F exhaust systems at our Tampa, FL shop, the Invidia Q300 cat-back with rolled titanium tips is the kit we point owners to first. It is the most complete bolt-on system for the 2015–2024 RC F, it uncorks the high-rpm V8 wail Lexus muffled from the factory, and it does it without a tune or a check-engine light.

Why the Lexus RC F Begs for an Exhaust Upgrade

The Lexus RC F is one of the last naturally aspirated V8 sports coupes on sale, and that is exactly why an exhaust is the first mod most owners make. Under the hood sits the 5.0L 2UR-GSE V8 producing 467 hp at 7,100 rpm and 389 lb-ft at 4,800–5,600 rpm, spinning to a 7,300-rpm redline through an 8-speed automatic. It is a rev-hungry, old-school engine trapped behind one of the quietest factory exhaust systems in the class.

Lexus tuned the stock RC F to whisper below 3,000 rpm for luxury-car refinement, which means the signature top-end V8 shriek only arrives when you are already committing to the tach. A quality cat-back or axle-back exhaust removes the restrictive rear mufflers and resonators, so the 2UR-GSE finally sings from part-throttle all the way to redline. On a 3,958-lb (2015–2019) or 3,891-lb (2020–2024) coupe that already sprints 0–60 mph in roughly 4.4 seconds, the reward is pure character rather than raw numbers — and that is the honest expectation to set before you spend.

Invidia Q300 Cat-Back Exhaust: Our Top Pick Reviewed

The Invidia Q300 (Q300H) is a full cat-back system, meaning it replaces everything from the catalytic converters rearward — mid-pipes, resonators, and mufflers — not just the visible rear section. That is the key reason it out-performs an axle-back for sound: more of the restrictive factory plumbing is gone. It is built from mandrel-bent T304 stainless steel and finished with Invidia's signature rolled, burnt-titanium quad tips.

How Much Power Does a Cat-Back Add on the RC F?

A cat-back exhaust on the naturally aspirated RC F typically adds a modest 5–10 hp at the top of the rev range, not a transformative dyno figure. Because the 2UR-GSE V8 is naturally aspirated and the factory catalytic converters stay in place on a cat-back, the real gain is reduced back-pressure at high rpm plus a meaningful weight reduction over the heavy OE mufflers. Owners chasing big horsepower numbers should pair the exhaust with a high-flow intake and a tune; owners chasing sound and throttle response will be thrilled with the exhaust alone.

This is the honest reality of any NA V8 exhaust: you are buying character, tip aesthetics, and a few peak horsepower — not forced-induction gains. What the Invidia Q300 changes most is how the car feels above 4,000 rpm, where the freed-up top end makes the RC F noticeably more eager to chase its 7,300-rpm redline.

Sound: What the Invidia Q300 Does to the 5.0L V8 Note

The Invidia Q300 transforms the RC F from muted luxury coupe to a hard-edged, high-rpm V8 that announces itself. Below 2,500 rpm it stays civil enough for a daily commute; roll into the throttle and the resonator delete lets the 5.0L build into a raspy, race-bred crescendo near redline. Expect a firmer cold-start bark and some added cabin presence at cruise — the trade for uncorking a V8 Lexus deliberately silenced.

If you want the fullest, most aggressive character, the Invidia's complete cat-back design moves more air and eliminates more restriction than a rear-only axle-back. If you would rather keep highway drone to an absolute minimum, the Borla and Revel options below dial the volume back a notch.

Invidia vs Borla vs Revel: RC F Exhaust Comparison

All three brands build a proven Lexus RC F exhaust, but they solve different problems. The Invidia Q300 is the loudest, most complete system; the Borla S-Type axle-backs are the easiest bolt-on with the classic Borla growl; and the Revel Medallion Touring is the quietest, most refined option for owners who want more sound without any drone. Here is how the field stacks up:

Borla S-Type Axle-Back: The Easiest Bolt-On

The Borla S-Type is a 2.5-inch true-dual axle-back for the 2015–2024 RC F and 2022–2024 IS 500, finished with quad 4-inch tips in either bright or black chrome on T-304 stainless. It bolts to the factory mid-pipe with no cutting, carries Borla's Million-Mile Warranty, and delivers that unmistakable S-Type growl. Add Borla's mid-section (part 60738, $879.99) later to convert it into a full cat-back.

Revel Medallion Touring: The Refined Choice

The Revel Medallion Touring Premier is the drone-free pick, engineered for owners who want a richer V8 tone without an intrusive highway hum. It fits the 2015–2019 RC F (and 2021–2025 IS 500) and uses SUS304 stainless with a quad-tip layout that mirrors the RC F's factory outlet placement. It is the most livable daily-driver upgrade of the group.

Cat-Back vs Axle-Back: Which Should You Buy?

Buy a cat-back if you want the biggest sound change and are willing to spend more; buy an axle-back if you want a fast, affordable bolt-on with excellent tips. A cat-back like the Invidia Q300 replaces the mid-pipes, resonators, and mufflers, so it removes the most restriction and produces the loudest, fullest note. An axle-back like the Borla S-Type only swaps the rear-most section behind the axle, which is cheaper and installs in under an hour but leaves the factory resonators in place.

For the RC F specifically, the difference is real but not night-and-day: the stock resonators are relatively small, so a quality axle-back still sounds excellent. Our rule of thumb at NLP Performance — if budget and maximum volume matter most, go cat-back; if easy installation and tip style matter most, an axle-back is the smart-money buy, and you can always add the Borla mid-section later.

Installation & Fitment Notes

All of these systems are direct bolt-on fitments for the RC F that require no tune and throw no check-engine light, because the factory catalytic converters remain in place. Plan on 60–90 minutes for an axle-back and roughly 2–3 hours for the full Invidia cat-back, ideally on a lift with penetrating oil for the factory hardware. Every option here uses stainless-steel construction, so corrosion in Florida's humidity is a non-issue.

One important note for our California customers: the Invidia Q300 and both intakes below cannot be shipped to California due to CARB emissions regulations. The Borla axle-backs are 50-state legal because they sit behind the catalytic converters and do not alter the emissions system. Always confirm your specific trim and model year at checkout — RC F fitment spans 2015–2024, including Base, F Sport Performance, Fuji Speedway Edition, and Track Edition trims.

Complete the Build: Intake, Carbon & Suspension

To get measurable horsepower alongside the exhaust note, pair your system with a high-flow cold air intake. The AEM cold air intake ($474.99) and the aFe Takeda Stage-2 intake ($435.00) both free up intake airflow — aFe rates its Takeda system at up to 9 hp and 9 lb-ft over stock while outflowing the factory box by 24 percent. Intake plus exhaust is the classic breathing package for the 2UR-GSE V8.

For looks, the Seibon BT-style carbon fiber hood ($1,530.00) drops weight over the nose and sharpens the RC F's aggressive face, while a set of KW Variant 3 coilovers ($4,194.00) transforms body control on canyon roads and track days. Build the sound first, then breathing, then handling and style.