GR Supra Exhaust (2020-2025): Akrapovic vs HKS vs Borla

The best 2020-2025 Toyota GR Supra exhaust for most owners is the Akrapovic Slip-On Line in titanium, but the HKS Super Turbo Muffler and Borla ATAK cat-back each win a specific buyer. All three bolt to the B58 3.0L twin-scroll turbo inline-six that makes 335 hp and 365 lb-ft in the 2020 car and 382 hp with 368 lb-ft from 2021 onward. This head-to-head compares titanium versus stainless, slip-on versus full cat-back, and drone-free daily manners versus JDM aggression — with real materials, pipe diameters, sound data, and pricing so you can pick the right GR Supra exhaust the first time.

What Is a GR Supra Exhaust Upgrade, and Why Does It Matter?

A GR Supra exhaust upgrade is an aftermarket muffler or cat-back system that replaces the restrictive factory rear section on the A90 (MKV) Supra to improve exhaust flow, cut weight, and unlock the B58 engine's naturally deep inline-six voice. The A90 Supra shares its BMW-sourced B58B30 3.0L twin-scroll turbo six with the BMW Z4 M40i, and Toyota deliberately muted its factory tone — which is exactly why an exhaust is the most popular first modification on the platform.

There is real engineering behind the choice. The 2020 GR Supra 3.0 produces 335 horsepower and 365 lb-ft of torque; for 2021 Toyota revised the engine with a six-port dual-branch exhaust manifold and a lower 10.2:1 compression ratio (down from 11:1), lifting output to 382 horsepower and 368 lb-ft. At roughly 3,397–3,400 lb curb weight, the Supra is light enough that even a few pounds shed from the tail of the car is felt. At NLP Performance in Tampa, FL, the GR Supra exhaust is one of the parts our customers cross-shop most, so we built this comparison around the three systems buyers ask about by name: Akrapovic, HKS, and Borla.

GR Supra Exhaust Comparison: Akrapovic vs HKS vs Borla at a Glance

The fastest way to choose is to compare material, system type, sound character, and price side by side. Akrapovic is the only titanium option and the only slip-on (it reuses the factory mid-pipe); HKS and Borla are full stainless cat-back systems. The table below reflects live pricing at NLP Performance.

Akrapovic Slip-On Line (Titanium): The Premium Benchmark

The Akrapovic Slip-On Line is the best overall GR Supra exhaust because it is the only fully titanium system here, making it the lightest option by a wide margin while delivering ECE type-approved, valve-controlled sound. It is a slip-on, meaning it replaces only the rear muffler section and bolts to the factory mid-pipe — the simplest, cleanest install of the three. The muffler uses a single-canister layout feeding a unique set of titanium tailpipes finished in a bluish-purple annealed hue with a coated outer surface for durability.

HKS Super Turbo Muffler: The JDM Statement

The HKS Super Turbo Muffler is the GR Supra exhaust for owners who want unmistakable tuner presence and legendary Japanese build quality. This cat-back system is built from S304 stainless steel, uses an 85-70mm dual center-pipe path into a single 110mm polished tail, and weighs 24.1 kg (about 53 lb). HKS designs it to be noticeably louder and deeper than stock while staying civil at cruise — the company's own data shows only a modest rise at idle (roughly 87 dB versus 85 dB stock), with the real character arriving under throttle.

Borla ATAK Cat-Back: The Best-Value Powerhouse

The Borla ATAK cat-back is the best-value GR Supra exhaust, delivering Borla's loudest and most aggressive sound signature for $1,883.99 — marked down from $2,109.99, a saving of $226. Built from aircraft-quality T-304 stainless steel, this system runs a 3.5-inch pipe that splits into dual 3-inch outlets and finishes in 4.5-inch carbon fiber tips. ATAK stands for Acoustically Tuned Applied Kinetics, and Borla's patented Polyphonic Harmonizer technology plus a valve that works with the factory actuator keeps the cabin drone-free at cruise while still turning heads on demand. It is made in the USA and backed by Borla's million-mile warranty.

How Much Horsepower Does an Exhaust Add to a GR Supra?

On a stock-tune B58, a cat-back or slip-on exhaust alone typically frees up single-digit to low-double-digit peak horsepower — meaningful, but modest. The reason is that the A90 Supra's factory turbocharger is not choked by the rear muffler at stock boost; the exhaust's biggest gains are reduced backpressure at high rpm, weight savings, and sound. The transformational numbers on the platform come when you add an ECU tune: tuned B58 Supras routinely clear 400–450 wheel horsepower, and a free-flowing exhaust helps that tune breathe. In other words, buy the exhaust for the sound, weight, and flow now, and it will pay off again when you tune later.

Titanium vs Stainless: Which GR Supra Exhaust Material Is Better?

Titanium is the better material for weight and prestige, while T-304 and S304 stainless steel offer excellent durability at a far lower price. Titanium, as used in the Akrapovic Slip-On Line, is roughly 40% lighter than stainless for the same strength, which is why it is the choice for buyers chasing every pound and the distinctive blued tailpipe look. Stainless steel, used by both HKS (S304) and Borla (T-304), resists corrosion for the life of the car and is why Borla can offer a million-mile warranty. For a daily-driven Supra where budget matters, stainless is the smart pick; for a weekend car or a build where weight and resale are priorities, titanium justifies its premium.

Installation, Fitment, and Drone Notes

All three systems are bolt-on installs that fit 2020-2025 GR Supra 3.0 models and require no cutting. The Akrapovic Slip-On is the quickest job because it replaces only the rear muffler and reuses the factory mid-pipe; most shops complete it in under an hour. The HKS and Borla cat-back systems replace everything behind the catalytic converter and take slightly longer but still install with hand tools on a lift. Drone — the low-frequency cabin resonance many exhausts cause at highway rpm — is actively managed on all three: Akrapovic and Borla use exhaust valves, and Borla's Polyphonic Harmonizer is specifically engineered to cancel drone. If you commute daily, the valved Akrapovic and Borla systems are the most livable choices.

Which GR Supra Exhaust Should You Buy?

Buy the Akrapovic Slip-On Line if you want the lightest, most refined, and highest-resale GR Supra exhaust and the budget allows for its $4,604.63 price — it is the system we recommend for enthusiasts building a keeper. Buy the Borla ATAK cat-back at $1,883.99 if you want the loudest, most attention-grabbing note and the best value; at under half the Akrapovic's price with a million-mile warranty, it is the smart-money choice for most owners. Buy the HKS Super Turbo Muffler at $3,750 if the JDM tuner heritage and that signature polished 110mm tip speak to you. All three are proven bolt-on fits for the 2020-2025 A90 Supra 3.0, and all three are backed by real inventory and expert fitment help at NLP Performance in Tampa, FL. When you are ready to add power, pair any of them with an ECU tune to unlock the B58's 400-plus wheel-horsepower potential.