Next Level Performance
July 31, 2026 • 11 min read
The Nissan GT-R (R35) turns a 3.8-liter twin-turbo VR38DETT V6 into 480 to 600 horsepower straight from the factory, yet Nissan bolted on a heavy, restrictive cat-back muffler to keep the car quiet. Upgrading to an aftermarket R35 GT-R cat-back exhaust is the single most popular first mod on Godzilla: it sheds weight, frees a few honest horsepower, and finally lets that turbo V6 breathe and bark. In our Tampa, FL shop we install and ship these systems constantly, so we compared the five best R35 cat-backs we stock — from a $900 bolt-on to a $4,100 hand-welded titanium flagship.
Our Verdict
The aFe Takeda 3-inch stainless cat-back is the best all-around R35 GT-R exhaust: mandrel-bent 304 stainless, TIG welds, carbon-fiber tips, and 2009-2021 fitment for $3,867.00.
Want the lightest, show-quality build? Step up to the hand-welded HKS Legamax TIG at $4,100.00. Chasing maximum volume for the track? The HKS Racing Muffler with removable silencer is the loudest of the group. On a budget, the Revel Medallion Touring-S delivers a quad-tip bolt-on for $900.34.
Shop Our Top Pick →
aFe Takeda 3" 304-stainless cat-back with carbon fiber tips — our R35 GT-R top pick.
Why Upgrade the R35 GT-R Exhaust?
The factory R35 exhaust is the low-hanging fruit of GT-R tuning. The stock cat-back is a heavy, tightly-baffled assembly that weighs roughly 38 lbs (17.4 kg) and muffles the VR38DETT into near-silence. Swapping to a mandrel-bent aftermarket system reduces backpressure after the catalytic converters, drops several pounds of rear-biased weight, and transforms the sound from muted to menacing.
On a stock GT-R, a cat-back alone is worth roughly 5 to 15 wheel horsepower — modest, because the real restriction on a twin-turbo car lives in the downpipes and turbine housings. But the cat-back is the correct starting point: it is reversible, does not touch emissions hardware, and sets up the exhaust path for downpipes and a tune later. Pair a quality cat-back with high-flow downpipes and an ECU calibration and independent dyno pulls have shown gains north of 30 wheel horsepower.
The other prize is weight. Godzilla is famously heavy at around 3,800 lbs, so every pound behind the rear axle matters for balance. A full titanium system such as the HKS Legamax can cut cat-back weight to roughly 23 lbs, a ~15 lb saving over stock. Stainless systems save less but cost far less — the trade-off at the heart of this comparison.
R35 GT-R Cat-Back Exhaust Comparison
Here is how the five R35 GT-R cat-back systems we stock stack up on material, tips, intended use, and price. All prices are current NLP Performance listings; every exhaust is linked to its product page for full fitment details.
| Exhaust | Material & Welds | Tips | Best For | Price |
|---|---|---|---|---|
| HKS Legamax TIG-Welded | Titanium, hand TIG-welded | Quad 119mm burnt titanium | Lightest, show-quality flagship | $4,100.00 |
| aFe Takeda 3" SSTop Pick | 304 stainless, TIG-welded | Dual 4.5" carbon fiber | Best all-around value | $3,867.00 |
| HKS Racing Muffler + Silencer | Stainless race muffler | Single, removable silencer | Loudest, track use | $4,050.00 |
| HKS Legamax Premium (Flux) | Titanium, flux-welded | Quad 119mm burnt titanium | Quietest daily titanium | $2,600.00 |
| Revel Medallion Touring-S | 304 stainless steel | Quad blue-tint tips | Budget bolt-on | $915.60 |
The pattern is clear: titanium buys you the lowest weight and the highest price, 304 stainless buys the best balance of durability and value, and the Revel undercuts everything for buyers who just want a quad-tip bolt-on. Below we break down each system.
aFe Takeda 3" Stainless Cat-Back — Best All-Around
The aFe Takeda is our top pick because it nails the balance most GT-R owners actually want. It is built from mandrel-bent 3-inch (76mm) 304 stainless steel, fully TIG-welded, and finished with lightweight 4.5-inch dual carbon-fiber tips. aFe designs and manufactures these systems in Corona, California, tuning the tube lengths to maximize power across the band while keeping the tone civil. Dual free-flowing transverse mufflers absorb the high-pitch rasp that plagues cheap GT-R exhausts, so it stays aggressive without turning into a drone box on the highway.
Mandrel-bent 3" 304 stainless with full TIG welds and band clamps for a 360-degree seal.
Key Specifications
What We Like
- + Best value-to-performance ratio of the group at $3,867.00
- + Widest fitment: 2009-2021 R35 GT-R
- + 304 stainless resists corrosion and Florida humidity
- + Carbon-fiber tips add style and shed tip weight
- + Factory mounting points make it a bolt-on install
Things to Consider
- – Stainless is heavier than the titanium HKS systems
- – Carbon tips are a love-it-or-leave-it aesthetic
Dual 4.5" carbon-fiber tips give the aFe Takeda its signature look.
HKS Legamax TIG-Welded — Titanium Flagship
The HKS Legamax TIG-welded system is the flagship of this comparison and the most expensive at $4,100.00. It is a full titanium cat-back with 85mm piping and quad 119mm burnt-titanium tips. The difference from the standard Legamax is the welding: every joint is hand TIG-welded rather than flux-welded, producing show-quality beads and the lowest possible weight. This is the exhaust for the builder who wants the lightest, most jewel-like system on the car and is not shopping on price.
Quad 119mm burnt-titanium tips are the Legamax signature.
What We Like
- + Full titanium construction for the lowest cat-back weight (~23 lbs)
- + Hand TIG-welded, show-quality craftsmanship
- + Iconic burnt-titanium quad tips
- + HKS Legamax reputation for tone and durability
Things to Consider
- – Most expensive system here at $4,100.00
- – Not CARB-approved; cannot ship to California
HKS Racing Muffler R35 GT-R — Loudest for the Track
If you want the loudest, most track-focused option, the HKS Racing Muffler is it. This is a straight-through race muffler that prioritizes flow and volume, and it ships with a removable silencer insert — run it in for a (relatively) civil street drive, pull it out for open-header-style volume at the track. It fits 2007-2023 R35 GT-Rs, the widest year span in this test, and is a favorite of owners chasing maximum turbo spool sound over daily comfort.
The removable silencer lets you switch between street and track volume.
What We Like
- + Loudest, most aggressive system in the group
- + Removable silencer for street-versus-track flexibility
- + Straight-through race design for maximum flow
- + Broadest fitment window: 2007-2023 R35
Things to Consider
- – Too loud for many daily drivers with the silencer out
- – Single-outlet race look is less refined than quad tips
HKS Legamax Premium (Flux-Welded) — Quietest Titanium Daily
The flux-welded HKS Legamax Premium is the value entry into titanium and the quietest cat-back here. It shares the 85mm titanium piping and quad 119mm burnt-titanium tips of the flagship, but uses efficient flux welding to bring the price down to $2,340.00. HKS rates it around 89 dB at idle versus roughly 88 dB stock — barely louder than factory at a standstill, then it comes alive under boost. For owners who want titanium weight savings and OEM-plus manners, this is the sweet spot.
Key Specifications
What We Like
- + Titanium weight savings at a mid-tier price
- + Quietest system here; near-OEM idle around 89 dB
- + Same tips and piping as the flagship Legamax
- + Fits 2009-2021 R35 GT-R
Things to Consider
- – Flux welds are not as pretty as the TIG version
- – Still pricier than a comparable stainless system
Revel Medallion Touring-S — Best Budget Bolt-On
Not everyone needs a $4,000 exhaust. The Revel Medallion Touring-S is the budget pick at $900.34 — a dual-muffler, quad blue-tint-tip 304 stainless cat-back for 2009-2013 R35 GT-Rs. It will not match the titanium weight of the HKS systems or the carbon tips of the aFe, but it delivers a meaningful sound and flow upgrade over stock for roughly a quarter of the flagship's price. For an early R35 owner who wants a clean bolt-on without spending supercar money, it is the smart-money choice.
Titanium vs Stainless Steel: Which R35 Exhaust Material Wins?
Titanium is lighter and holds heat better, which is why the HKS Legamax systems can reach roughly 23 lbs versus the ~38 lb OEM cat-back. It also develops that prized bronze-to-blue tip patina. The downside is cost: titanium roughly doubles the price versus comparable stainless. 304 stainless steel, as used by aFe and Revel, is heavier but far cheaper, extremely corrosion-resistant, and every bit as durable for a street car. Our rule of thumb: choose titanium if weight and craftsmanship are the priority and budget is flexible; choose 304 stainless if you want the best dollar-per-performance and long-term corrosion resistance — a real consideration for us here in humid Tampa.
How Loud Is an R35 GT-R Cat-Back Exhaust?
Volume varies widely across these systems. The HKS Legamax Premium is the tamest, idling around 89 dB against a roughly 88 dB stock baseline, and it stays livable at cruise. HKS engineers its street systems around the California Vehicle Code 95-decibel limit. The aFe Takeda sits in the middle with a purposeful but drone-controlled tone thanks to its transverse mufflers. The HKS Racing Muffler is the loudest by a wide margin, especially with the silencer removed — excellent at the track, potentially fatiguing on a long daily commute. If highway drone is your worry, favor the Legamax Premium or the aFe over the Racing Muffler.
Installation and Fitment Notes
All five systems are bolt-on cat-backs that use the factory hangers and mounting points, so no cutting or welding is required for a standard install — budget about 1.5 to 2 hours on a lift. Because these are cat-backs, they mount after the catalytic converters and do not disturb your emissions hardware. Always confirm your exact model year and trim before ordering: the aFe Takeda and HKS Legamax systems cover 2009-2021, the HKS Racing Muffler stretches to 2007-2023, and the Revel is listed for 2009-2013. Note that the HKS Legamax TIG-welded system is not CARB-approved and cannot ship to California addresses.
Frequently Asked Questions
Does a cat-back exhaust add horsepower to an R35 GT-R?
A cat-back exhaust alone adds roughly 5 to 15 wheel horsepower on a stock R35 GT-R by reducing backpressure through larger, mandrel-bent piping. The VR38DETT is a twin-turbo engine, so the bigger gains come when the cat-back is paired with high-flow downpipes and an ECU tune, where combined packages have shown 30-plus wheel horsepower on independent dyno tests. Treat a cat-back as the foundation of a bolt-on package, not a standalone power part.
How much weight does a titanium GT-R exhaust save?
The R35 GT-R factory cat-back weighs about 38 lbs (17.4 kg). A full titanium system such as the HKS Legamax can drop that to roughly 23 lbs, saving around 15 lbs of rear-biased weight. A 304-stainless system like the aFe Takeda saves less than titanium but still trims several pounds versus the heavy OEM muffler assembly.
Which R35 GT-R cat-back exhaust is the loudest?
The HKS Racing Muffler R35 GT-R is the loudest option here. It uses a straight-through race muffler and ships with a removable silencer so you can run it quiet on the street and pull the silencer for track days. The HKS Legamax Premium is the quietest of the group, idling around 89 dB versus the roughly 88 dB OEM level.
Will an aftermarket cat-back fit every year of the R35 GT-R?
Most R35 cat-backs cover a wide window because the chassis changed little from 2009 to 2021. The aFe Takeda and HKS Legamax systems fit 2009 through 2021 GT-Rs, while the Revel Medallion Touring-S is listed for 2009-2013 cars. Always confirm your exact year and trim (Base, Premium, Black Edition, Track, or Nismo) against the product fitment before ordering.
Is a GT-R cat-back exhaust legal for the street?
It depends on the system and your state. HKS street systems are engineered around the California Vehicle Code 95-decibel limit, but the HKS Legamax TIG-welded system is not CARB-approved and cannot ship to California addresses. A cat-back does not touch the catalytic converters, so emissions hardware stays intact; the legality question is mainly about sound level and local inspections.
Do I need a tune after installing a cat-back on my GT-R?
No, a cat-back exhaust does not require a tune to run safely because it sits after the catalytic converters and does not change how the ECU reads airflow. That said, adding a tune lets you capitalize on the freer-flowing exhaust and is strongly recommended once you move to downpipes. At NLP Performance we advise budgeting for a tune whenever you go beyond a simple cat-back.
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