Next Level Performance
August 15, 2026 • 9 min read
Our Verdict
The HKS Hi-Power Titanium Racing exhaust is the best all-around cat-back for the Mk4 Supra (JZA80), pairing full-titanium weight savings with the flow a big-power 2JZ-GTE demands.
Want premium looks for a street car? The HKS Carbon Ti (around $1,300) is the play. Building a track weapon or big single-turbo 2JZ? The HKS Racing Muffler is the lightest and freest-flowing of the three at around $1,150. All three are legit HKS titanium hardware, and all three ship free from our Tampa, FL warehouse.
Shop Our Top Pick →Choosing the best Mk4 Supra exhaust comes down to one truth: the 1993-1998 Toyota Supra Turbo (chassis code JZA80) is powered by the legendary 2JZ-GTE, a cast-iron, sequential-twin-turbo inline-six that made 320 hp and 315 lb-ft from the factory and shrugs off 600-plus horsepower on stock internals. Feed that engine more boost and it will ask for more exhaust. In this guide we compare the three HKS titanium cat-back systems we stock for the JZA80 — the Hi-Power Titanium Racing, the Carbon Ti, and the Racing Muffler — so you can match the right system to your build, your ears, and your budget.
Why the 2JZ-GTE Loves a Bigger Exhaust
The 2JZ-GTE is one of the most over-built engines ever put in a production car. Toyota gave the Mk4 Supra a 3.0-liter iron block, forged crank, and a sequential turbo setup that spins up from around 2,000 rpm and pulls to a 6,200 rpm redline — good for 0-60 mph in roughly 5.5 seconds and a governed 155 mph top speed straight off the showroom floor. The catch is that the factory exhaust, with its restrictive pre-cats and small-diameter piping, becomes a bottleneck the moment you add boost.
A larger-diameter cat-back drops exhaust backpressure, lets the sequential turbos spool cleaner into full boost, and unlocks the deep, purposeful tone the 2JZ is famous for. On a stock-turbo car a cat-back alone is worth a modest few horsepower, but the real payoff comes when the exhaust is sized for where the build is going: a proper 3.75-inch to 4-inch system supports the 500-800 hp big-turbo 2JZ setups these cars are built for, without choking the engine at the top end. That is exactly why every serious JZA80 owner starts with a real exhaust.
HKS titanium construction and a large-diameter tip define the Mk4 Supra exhaust look.
The 3 Best Mk4 Supra Cat-Back Exhaust Systems
Each of these HKS systems is a bolt-on cat-back for the 1993-1998 Supra Turbo (JZA80, 2JZ-GTE). They differ in material, bore, volume, and price — here is how each one stacks up.
This is HKS's flagship JZA80 system and our overall pick. Built entirely from titanium, it is dramatically lighter than the factory stainless exhaust — titanium is roughly 40% lighter than steel — and its large-bore, race-oriented design gives the 2JZ room to breathe well past 600 hp. The tone is unmistakable HKS: deep at idle with the signature titanium rasp under boost. If you are building one Supra to keep and want the exhaust to never be the restriction, this is it.
Key Specifications
What We Like
- + Full titanium construction for major weight savings over stock
- + Large-bore flow supports 500-800+ hp 2JZ builds
- + Iconic deep HKS tone with titanium rasp on boost
Things to Consider
- – Premium price at $2,120, the most expensive of the three
- – Race-oriented volume is more than some daily drivers want
The Carbon Ti is the enthusiast's street pick. It runs a 95mm (3.75-inch) center pipe into a 120mm tip, built from S304 stainless with a titanium canister and a carbon-fiber tip finish that looks the part under a Supra's rear valance. It flows plenty for a stock-turbo or mild big-single build while keeping cabin drone civilized on the highway. At around $1,300 it is the sweet spot of sound, looks, and value in the HKS JZA80 lineup.
What We Like
- + Carbon-fiber and titanium tip for a premium OEM-plus look
- + 95mm center pipe frees the 2JZ without harsh drone
- + Best balance of street manners and JDM style at $1,300
Things to Consider
- – Not as light as the full-titanium or Racing Muffler options
- – Single large tip look will not suit dual-exit fans
When maximum flow and minimum weight matter more than street comfort, the Racing Muffler wins. It uses 102mm (4-inch) piping into a compact 170mm titanium muffler and a 115mm tip, and HKS rates it around 40% lighter than the Hi-Power system. It is the loudest and freest-flowing of the three — exactly what a track car or a 700-plus horsepower single-turbo 2JZ wants. At around $1,150 it is also the most affordable way into genuine HKS titanium hardware.
What We Like
- + 102mm (4 in) piping and 170mm Ti muffler for max flow
- + Roughly 40% lighter than the Hi-Power system
- + Most affordable of the three at $1,150
Things to Consider
- – Loud with real drone — not for the noise-sensitive
- – Track-focused with minimal sound deadening
Mk4 Supra Exhaust Comparison: HKS Hi-Power vs Carbon Ti vs Racing Muffler
| Kit | Material | Bore / Tip | Best For | Price |
|---|---|---|---|---|
| HKS Hi-Power Titanium RacingTop Pick | Full titanium | Large-bore • 120mm tip | Max-power street/strip builds | $2,120.00 |
| HKS 3.0 Turbo Carbon Ti | S304 + carbon/Ti tip | 95mm pipe • 120mm tip | Premium street sound & looks | $1,300.00 |
| HKS Racing Muffler (JZA80) | Titanium muffler + SS | 102mm/4in • 115mm tip | Lightest • track & big turbo | $1,150.00 |
How to Choose the Right JZA80 Exhaust
Start with your build target. If you are keeping the sequential twins or running a modest single and want the exhaust to never be the limiting factor, the HKS Hi-Power Titanium Racing is the buy-once system — full titanium, large bore, and enough flow for 600-800 hp. If your Supra is a street car and you care about looks and highway comfort as much as sound, the Carbon Ti at 95mm delivers the classic HKS note without punishing you on a road trip.
Building a dedicated track car or a big single-turbo monster? The HKS Racing Muffler and its 4-inch piping is the lightest, loudest, freest-flowing choice, and the most affordable. One important note on fitment: all three of these systems are engineered for the 2JZ-GTE Turbo (JZA80). Naturally aspirated 2JZ-GE Supra owners need a different exhaust designed for the NA driveline.
Complete the 2JZ Build: Supporting Mods
An exhaust is the first breath; the rest of the build is what turns a 320 hp Supra into a 600-800 hp icon. Once the JZA80 is flowing, these are the parts our Tampa, FL customers pair with it most often.
Fuel first: DeatschWerks 2200cc injectors for a big-power 2JZ.
Big turbo and a free-flowing exhaust need fuel to match. A set of DeatschWerks 2200cc top-feed injectors supports the 700-plus horsepower range that these exhausts unlock. To put that power to the ground, a McLeod RXT 1200HD twin-disc clutch is rated to hold up to 1,200 lb-ft through the factory V160 6-speed.
McLeod RXT 1200HD twin-disc clutch holds serious 2JZ torque.
Chassis and cooling round out a proper build. A set of KW V3 coilovers (around $3,094) sharpens the JZA80's handling with independent rebound and compression adjustment, while a Mishimoto 3-row aluminum radiator keeps 2JZ temps in check when you are leaning on the boost.
KW V3 coilovers for the JZA80.
Mishimoto X-Line 3-row radiator.
Naturally aspirated 2JZ-GE Supra owners are not left out either: an Injen short-ram intake is a popular, affordable airflow upgrade for the NA cars while you plan the rest of the build.
Injen short-ram intake for the NA 2JZ-GE Supra.
Frequently Asked Questions
What is the best exhaust for a Mk4 Supra?
The HKS Hi-Power Titanium Racing exhaust is the best overall cat-back for the 1993-1998 Mk4 Supra (JZA80). Its full-titanium construction and large-bore design flow enough for a 600-800 hp 2JZ-GTE while cutting weight over the stock stainless system. For a street-focused build the HKS Carbon Ti (around $1,300) is the better value, and for a track car the HKS Racing Muffler (around $1,150) is the lightest option.
How much horsepower does a cat-back exhaust add to a 2JZ-GTE?
On a stock-turbo 2JZ-GTE, a cat-back exhaust alone typically frees up roughly 5-15 hp by reducing backpressure. The bigger payoff is on modified cars: when paired with a downpipe, more boost, and a tune, a 3.75-4 inch HKS system supports the 500-800 hp the 2JZ can make on its factory internals. The exhaust is a supporting mod that lets the rest of the build breathe rather than a standalone power adder.
Do these HKS exhausts fit both the Turbo and NA Mk4 Supra?
No. All three HKS systems in this guide are designed for the 2JZ-GTE Turbo Supra (JZA80, 1993-1998). The naturally aspirated 2JZ-GE Supra uses a different driveline and exhaust routing, so NA owners should choose an NA-specific system. Always confirm your VIN and engine code (2JZ-GTE vs 2JZ-GE) before ordering.
Is a titanium exhaust worth it on a Supra?
Yes, for the right build. Titanium is roughly 40% lighter than stainless steel, so a titanium system like the HKS Hi-Power Titanium or Racing Muffler noticeably reduces rear weight, resists corrosion, and delivers the sharp, metallic HKS tone the Mk4 Supra is known for. On a show or track build the weight savings and looks justify the premium; a purely budget street build may prefer the stainless-bodied Carbon Ti.
How loud is the HKS Racing Muffler on a JZA80?
The HKS Racing Muffler is the loudest of the three systems here. Its 102mm (4-inch) piping and compact 170mm titanium muffler prioritize flow over sound deadening, so it produces an aggressive tone with noticeable drone at highway speeds. It is ideal for track cars and big single-turbo builds; drivers who want a more livable street note should choose the Carbon Ti or Hi-Power Titanium.
Do I need a tune after installing a Supra cat-back exhaust?
A cat-back exhaust by itself does not require a tune, since it sits after the catalytic converter and does not change fueling significantly. However, once you add a downpipe, more boost, larger injectors, or a bigger turbo, a professional tune becomes essential to run safely and make the most of the freed-up exhaust flow. Plan to tune whenever you push a 2JZ-GTE toward 500 hp and beyond.
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