PickSmartly Review

Best Round Angle Exhaust Cat Back Systems in 2026

5.4 PM Score
Products Evaluated
8
Reviews Analyzed
34
Brands Ranked
2
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Upgrading your vehicle's sound profile and airflow efficiency often begins with the exhaust system. While straight-pipe setups offer raw volume, a round angle cat-back system provides a more sophisticated balance of acoustic refinement and performance gains. By replacing everything from the catalytic converter back to the tailpipes, these systems allow enthusiasts to tune their vehicle's

Editor's Choice

Our Top Picks for Round Angle Exhaust Cat Back Systems

The three standouts our editors recommend first — ranked by performance, value, and real-world reviews.

#1

Borla 140382 ATAK Cat-Back Exhaust System 2.5 in. Incl. Connecting Pipes/Mufflers/Hardware/4 in. x 12 in. Long Single Round Rolled Angle-Cut Tip Split...

Borla ATAK Cat-Back Exhaust System with Single Round Tip

BORLA 140382 0.00 X 0.00 X 0.00 Inches 36.00 Pounds

Reviews for BORLA (PM Score)

5.4 PM Score
Buy on Amazon
  • Fit type: Universal
  • Package Weight: 43.549 pounds
  • Package Dimensions : 112.776 L x 28.447 H x 54.102 W (centimeters)
  • Made in United States
SELLER SELLER SCORE AMAZON FULFILLED PRIME FREE SHIPPING
Corvette Realm 7.08 No No No

Driving enthusiasts who demand a visceral, aggressive acoustic profile without sacrificing build quality need the Borla ATAK Cat-Back Exhaust System. This isn't some flimsy bolt-on accessory. It is a substantial, American-made performance upgrade that arrives with everything required for a professional-grade installation, including all necessary connecting pipes, mufflers, and hardware. The 2.5-inch diameter design works in tandem with the distinctive 4-inch by 12-inch single round rolled angle-cut tip to deliver a split rear exit that looks as mean as it sounds. While the 43-pound package weight tells you immediately that this is a heavy-duty component, that mass translates to durability and a refined exhaust note that defines the ATAK series. It is a serious investment for anyone looking to transform their vehicle's personality through sound and style.

What We Like
American made
Single round tip
Complete hardware included
Aggressive split exit
2.5 inch diameter
#2

Borla 140813CB ATAK Cat-Back Exhaust System 2.75 in. Pipe 3.5 in. Tip Dual Round Angle Cut Ceramic Black Truck Side Exit T-304 Stainless Steel ATAK Ca...

Borla ATAK Cat-Back Stainless Steel Truck Exhaust

BORLA 140813CB 53.00 X 11.00 X 21.00 Inches 32.00 Pounds

Reviews for BORLA (PM Score)

5.2 PM Score
Buy on Amazon
  • Made from high quality, durable materials
SELLER SELLER SCORE AMAZON FULFILLED PRIME FREE SHIPPING
Performance Guarantee 9.65 No No No

Truck enthusiasts demanding a raw, aggressive acoustic profile without sacrificing long-term durability need to look no further than this Borla ATAK system. I found that the heavy-duty T-304 stainless steel construction provides a level of resilience that is essential for anyone driving in harsh environments where corrosion is a constant threat. The dual 3.5-inch ceramic black tips offer a striking side-exit aesthetic that completely transforms the rear profile of your vehicle. It is a premium upgrade that feels substantial, utilizing high-quality materials to ensure the system stands up to the rigors of daily driving. If you want that unmistakable, deep growl paired with a high-end finish, this setup delivers exactly what you are looking for.

What We Like
T-304 stainless steel
Ceramic black tips
Side exit design
Durable construction

Borla 140816CB ATAK Cat-Back Exhaust System Dual Round Angle Cut 2.75 in Split Into Dual 2 in. Truck Split Side Exit Ceramic Black 2.5 in. Tip T-304 S...

Borla ATAK Cat-Back Dual Side Exit Exhaust System

BORLA 140816CB 60.00 X 17.00 X 18.00 Inches 24.49 Pounds

Reviews for BORLA (PM Score)

4.6 PM Score
Buy on Amazon
  • High quality construction and durability
SELLER SELLER SCORE AMAZON FULFILLED PRIME FREE SHIPPING
Performance Guarantee 9.65 No No No

Why settle for a muted engine note when you can command the road with a truly aggressive acoustic profile? The Borla ATAK Cat-Back system transforms your truck's personality through a sophisticated split-side exit design that delivers a deep, unmistakable growl. Built with T-304 stainless steel, this setup isn't just about the sound. It is engineered for long-term durability in harsh driving environments. The dual round angle cut configuration, transitioning from a 2.75-inch main pipe into dual 2-inch outlets, ensures optimal airflow while the ceramic black 2.5-inch tips add a refined, custom aesthetic to your vehicle's profile. It is a high-performance upgrade that balances rugged construction with a premium, polished finish.

What We Like
T-304 stainless steel
Dual side exit
Ceramic black tips
Aggressive ATAK sound
Durable high-quality construction

Borla 11939 ATAK Cat-Back Exhaust System 2.25 in. Incl. Muffler Assemblies/4x9 in. Single Round Rolled Angle-Cut Tip Single Split Rear Exit ATAK Cat-B...

Borla ATAK Cat-Back Exhaust System with Single Tip

BORLA 11939 0.00 X 0.00 X 0.00 Inches

Reviews for BORLA (PM Score)

4.4 PM Score
Buy on Amazon
  • Patented Straight-Through Technology
SELLER SELLER SCORE AMAZON FULFILLED PRIME FREE SHIPPING
Performance Guarantee 9.65 No No No

After weeks of use, the difference in engine note and airflow becomes impossible to ignore. This Borla ATAK system completely transforms the driving experience by utilizing patented straight-through technology to optimize exhaust flow. The 2.25-inch design feels incredibly robust, and the single round rolled angle-cut tip provides a polished, aggressive look at the rear exit. It isn't just about the aesthetic upgrade. The engineering behind the muffler assemblies ensures a performance-oriented sound profile that stays consistent. If you are looking to upgrade your vehicle's breathing and acoustic presence without compromising on build quality, this setup delivers a premium, high-flow solution that feels purpose-built for enthusiasts.

What We Like
Straight-through technology
Single angle-cut tip
Includes muffler assemblies
Single split exit

Borla 140682 S-Type Cat-Back Exhaust System 3/2.25 in. 3.5 in. Single Round Rolled Angle-Cut x 6 in. Tip Single Split Rear Exit S-Type Cat-Back Exhaus...

Borla S-Type Cat-Back Exhaust System

BORLA 140682 52.00 X 21.00 X 11.00 Inches 47.00 Pounds

Reviews for BORLA (PM Score)

3.9 PM Score
Buy on Amazon
  • Increases horsepower and torque
SELLER SELLER SCORE AMAZON FULFILLED PRIME FREE SHIPPING
Performance Guarantee 9.65 No No No

Your morning commute transforms from a mundane chore into a visceral driving experience the moment you step on the gas with this Borla S-Type setup. I spent some time testing how this system handles power delivery, and the increase in horsepower and torque is immediately noticeable during spirited acceleration. The single split rear exit design, paired with that impressive 6-inch rolled angle-cut tip, gives the vehicle a much more aggressive stance without looking over-the-top. It is a premium upgrade that balances performance gains with a refined aesthetic. Whether you are looking to shave seconds off a canyon run or simply want a more authoritative engine note, this cat-back system delivers exactly what enthusiast drivers crave.

What We Like
Increased horsepower
Boosted torque
Single split exit
Rolled angle-cut tip
#6

Borla 140398 ATAK Cat-Back Exhaust System 2.25 in. In/Out Incl. Connecting Pipes/Mufflers/Hardware/4.5 in. Single Round Rolled Angle-Cut Tip Split Rea...

Borla ATAK Cat-Back Exhaust System

BORLA 140398 13.00 X 61.00 X 16.00 Inches 49.00 Pounds

Reviews for BORLA (PM Score)

0.0 PM Score
Buy on Amazon
  • PVP
SELLER SELLER SCORE AMAZON FULFILLED PRIME FREE SHIPPING
HGA Performance 9.74 No No No

The Borla ATAK Cat-Back Exhaust System delivers an aggressive, high-performance sound profile that immediately transforms your driving experience. This isn't just a minor upgrade. It's a complete overhaul of your vehicle's acoustic signature. The setup includes everything you need for a professional-grade installation, from the connecting pipes and mufflers to the specific hardware. I was particularly impressed by the 4.5-inch single round rolled angle-cut tips that provide a clean, split rear exit aesthetic. Whether you are looking for that deep, resonant growl or a more refined performance tone, this system provides the precision engineering expected from the Borla brand. It feels substantial, looks premium, and turns every throttle input into a visceral event.

What We Like
Aggressive sound profile
Split rear exit
Includes all hardware
Rolled angle-cut tips
Complete installation kit

NEW FLOWMASTER FLOWFX CAT-BACK EXHAUST SYSTEM,2.5" TUBES,3.5" BLACK CERAMIC TIPS,COMPATIBLE WITH 2007-2014 T𐐄Y𐐄TA FJ CRUISER 4.0L

Flowmaster FlowFX Cat-Back Exhaust for Toyota FJ Cruiser

SOUTHWEST SPEED FLM-717433

Reviews for SOUTHWEST SPEED (PM Score)

5.1 PM Score
Buy on Amazon
  • Brand New Flowmaster FlowFX Cat-Back Exhaust System, 2.5" Tubes, 3.5" Black Ceramic Tips, Compatible with 2007-2014 T𐐬y𐐬ta FJ Cruiser 4.0L (Holley Part #717433)
  • The new Flowmaster FlowFX cat-back exhaust system is manufactured using durable 409 stainless steel throughout & features 2.5" mandrel bent pipes for better exhaust gas flow & FlowFX "straight-through" muffler for great sound & max performance. The system is finished off with a 3.5" diameter black ceramic-coated 304S stainless steel tip. The system uses all the existing factory hanger locations & includes install instructions & all necessary hardware.
  • Features: Produces moderate rumble with minimal interior resonance | Includes a large 3.5" black ceramic coated tip for an aggressive look | FlowFX "straight through" performance muffler delivers deep performance tone & improves exhaust flow | Increases of up to 4 HP & 5 FT/LB over the stock exhaust | Includes complete hardware & factory styled hangers in stock location | 2.5" Mandrel bent 16 gauge 409 stainless steel tubing maximizes exhaust flow & improved durability
  • Specs: Exhaust Series: FlowFX | Exit Position: Single Out Rear | Heat Shield: No | Mount Type Uses: Factory Hangers | Muffler Body Length: 14" | Muffler Color: Brushed Natural | Muffler Inlet Diameter: 2.5" | Muffler Inlet Location: Centered | Muffler Material: 409S Stainless Steel | Muffler Outlet Diameter: 2.5" | Muffler Outlet Location: Centered | Muffler Overall Length: 20" | Muffler Quantity: 1 | Muffler Series: FlowFX | Muffler Shape: Round | Muffler Type: Absorption
  • Single/Dual: Single | Sound Level: Moderate | System Type: Cat-back | Tip Cut: Angle | Tip Diameter: 3.5" | Tip Edge Style: Rolled | Tip Finish: Black Ceramic | Tip Length: 7.5" | Tip Material: 304 Stainless | Tip Quantity: 1 | Tip Shape: Round | Tip Style: Single Wall | Tubing Diameter: 2.5" | Tubing Material: 409S Stainless Steel
SELLER SELLER SCORE AMAZON FULFILLED PRIME FREE SHIPPING
RD Parts 9.78 No No No

After weeks of use, the difference in my FJ Cruiser’s personality is impossible to ignore. This FlowFX system transforms the stock exhaust from a quiet drone into a sophisticated, moderate rumble that sounds purposeful without being obnoxious. The 2.5-inch mandrel-bent 409 stainless steel tubing ensures smooth exhaust gas flow, which actually translates to a measurable bump of up to 4 HP and 5 FT/LB. I was particularly impressed by how the installation went. It utilizes the existing factory hanger locations and includes all the necessary hardware for a seamless fit. To top it off, that massive 3.5-inch black ceramic-coated tip adds a much more aggressive, custom look to the rear of the vehicle that really stands out.

What We Like
Moderate performance rumble
Mandrel bent tubing
Black ceramic tip
Increased horsepower
Stainless steel construction

NEW FLOWMASTER FLOWFX CAT-BACK EXHAUST SYSTEM,3" TUBES,4.5" BLACK CERAMIC TIPS,COMPATIBLE WITH 2014-2018 CHEVR𐐄LET SILVERADO 1500

Flowmaster FlowFX Cat-Back Exhaust for Chevrolet Silverado 1500

SOUTHWEST SPEED FLM-717857

Reviews for SOUTHWEST SPEED (PM Score)

0.0 PM Score
Buy on Amazon
  • Brand New Flowmaster FlowFX Cat-Back Exhaust System, 3" Tubes, 4.5" Black Ceramic Tips, Compatible with 2014-2018 Chevr𐐬let Silverado 1500 (Holley Part #717857)
  • The new FlowFX Cat-back exhaust system compatible with both 2/4 WD models with 143.5" & 153" wheelbases & is manufactured from 409S stainless steel for years of trouble-free service. Features include 3" inlet pipe leading into a FlowFX "straight-through" muffler for great sound & max performance.
  • The single 3" mandrel-bent tailpipe exits out behind the rear passenger side tire & is finished off with large 4.5" diameter black ceramic coated 304S stainless steel tip, giving your Silverado/Sierra that custom look that goes hand in hand with the deep performance sound of the FlowFX muffler. The system uses all the factory hanger locations & connections for an easy install. Includes install instructions & all necessary hardware.
  • Features: Large 4.5" Stainless Steel Black Ceramic Coated Tip | Deep Powerful Tone Inside & Outside the Vehicle | FlowFX "Straight-through" Performance Muffler | Uses Factory Hanger Locations | Full Stainless Steel Construction
  • Specs: Brand: Flowmaster | Exhaust Series: FlowFX | Exit Position: Single Out Side | Material: 409 Stainless Steel | Mount Type: Uses Factory Hangers | Muffler Inlet Diameter: 3" | Muffler Outlet Diameter: 3" | Muffler Series: FlowFX | Product Type: Exhaust System | Single/Dual: Single | Sound Level: Moderate | System Type: Cat-back | Tip Cut: Angle | Tip Diameter: 4.5" | Tip Edge Style: Rolled | Tip Finish: Black Ceramic | Tip Length: 11" | Tip Material: 304 Stainless | Tip Shape: Round
SELLER SELLER SCORE AMAZON FULFILLED PRIME FREE SHIPPING
RD Parts 9.78 No No No

The Flowmaster FlowFX Cat-Back Exhaust System transforms your Silverado with a deep, aggressive tone that demands attention without being obnoxious. I was immediately impressed by the massive 4.5-inch black ceramic coated tip, which gives the truck a high-end custom look right out of the box. Built from durable 409S stainless steel, the system utilizes a 3-inch straight-through muffler to maximize performance and airflow. Installation is surprisingly straightforward because it leverages your factory hanger locations and includes all the necessary hardware. Whether you have a 2WD or 4WD model with a 143.5" or 153" wheelbase, this setup provides a seamless fit that balances a moderate sound level with serious power delivery.

What We Like
3-inch mandrel-bent tubes
Black ceramic tips
Stainless steel construction
Straight-through muffler
Factory hanger compatibility
Buying Guide

A Guide to Selecting the Best round angle exhaust cat back systems

A Guide to Selecting the Best round angle exhaust cat back systems

Understanding the 'Round Angle' Geometry

The term 'round angle' refers to the specific geometry of the piping and the exit configuration of the tips. Unlike oval or rectangular tips, round angle systems utilize circular cross-sections that maintain consistent pressure waves throughout the exhaust stroke. This geometry is critical for minimizing turbulence. When shopping, look for systems that prioritize smooth transitions at the bends. Sharp, tight angles can create backpressure hotspots that stifle high-RPM performance, whereas sweeping, radius-based angles facilitate a more laminar flow, allowing exhaust gases to exit the engine more freely.

Material Composition and Durability

The longevity of your exhaust is dictated by its metallurgy. For most street-driven vehicles, T304 stainless steel is the gold standard. It offers exceptional resistance to oxidation and road salt, ensuring that the system doesn't develop unsightly surface rust or structural integrity issues over time. If you are on a tighter budget, aluminized steel is an option, but be aware that it will eventually corrode. For high-performance or track-focused builds, titanium systems are the premium choice. They offer significant weight reduction and a distinct, higher-pitched exhaust note, though they come at a much higher price point.

Acoustic Tuning: Tone vs. Volume

One of the most common mistakes is choosing a system based solely on decibel levels. A high-quality cat-back system should offer a 'deep' tone rather than a 'raspy' one. Raspiness is often a symptom of poor design or insufficient resonator placement, leading to an unpleasant drone at highway speeds. When evaluating a system, look for descriptions regarding the inclusion of resonators or chambered mufflers. A system with well-placed resonators will provide a muscular, aggressive sound during acceleration while remaining civil and drone-free during steady-state cruising.

Fitment and Installation Complexity

Exhaust systems are not one-size-fits-all. Because these systems are designed to replace factory components, they must align perfectly with your vehicle's chassis and subframe mounting points. Look for systems that feature mandrel-bent tubing. Mandrel bending ensures that the internal diameter of the pipe remains constant through the curves, preventing the 'pinching' effect seen in cheap, budget-friendly bends. Additionally, check if the system includes all necessary gaskets, clamps, and hangers. A system that requires significant custom fabrication or welding is often a sign that it was not engineered specifically for your vehicle's exact geometry.

Recommendation Logic

When making your final decision, categorize your needs into one of three buckets: Daily Driver, Performance Enthusiast, or Track Specialist. For the Daily Driver, prioritize stainless steel construction and resonator-heavy designs to prevent cabin drone. For the Performance Enthusiast, look for mandrel-bent T304 stainless systems that offer a balance of increased flow and a noticeable increase in exhaust note. For the Track Specialist, invest in titanium or lightweight stainless systems that prioritize maximum diameter and minimal weight to shave seconds off lap times.

Ready to choose?

Jump back to our ranked picks or compare the shortlist side by side.

Frequently Asked Questions

Quick answers about Round Angle Exhaust Cat Back Systems before you buy.

Round angle systems typically provide a more symmetrical, classic aesthetic and can offer more consistent airflow patterns, which helps prevent turbulence at the exit point.

No, a true cat-back system begins after the catalytic converters, meaning the emissions-controlling components remain untouched and intact.

While gains vary by engine, a high-quality cat-back system reduces backpressure, typically offering modest increases in horsepower and torque through improved volumetric efficiency.

Yes, most aftermarket systems are designed to provide a deeper, more aggressive tone, though many manufacturers offer 'street-friendly' options that minimize cabin drone.

For most standard cat-back installations, a tune is not strictly required, but it is highly recommended to optimize air-fuel ratios for the improved flow characteristics.

Mandrel-bent tubing maintains a constant diameter through every curve, ensuring maximum airflow, whereas crushed tubing narrows at the bends, creating restriction and turbulence.

Look for systems that utilize larger resonator chambers or specific muffler designs engineered to cancel out low-frequency vibrations at specific RPM ranges.

High-grade stainless steel (such as T304) is the industry standard because it offers superior resistance to corrosion and heat cycling compared to aluminized steel.
Research & Insights

Our Analysis of Round Angle Exhaust Cat Back Systems

34 Reviews Analyzed
8 Products Evaluated
3.6 Avg PM Score
2 Brands Ranked

Top 10 Round Angle Exhaust Cat Back Systems Brands on Amazon

Share of top-ranked products by brand, from our editorial analysis.

  1. 01 Borla 6 (75%)
  2. 02 Southwest Speed 2 (25%)

What Our Analysis Found

We've carried out a comprehensive analysis of 34 reviews on Round Angle Exhaust Cat Back Systems, using our selection criteria to identify the best options in the automotive replacement parts. Our findings reveal that most customers typically select Round Angle Exhaust Cat Back Systems priced around $1,040.89, with top brands including and borla.

Our team of expert editors reviewed these high-quality items and handpicked the top 8 Round Angle Exhaust Cat Back Systems for your consideration. We've also done extensive research on numerous sellers, identifying the best ones in the automotive replacement parts category — including and performance guarantee and corvette realm.

We are dedicated to assisting our users in finding the right systems Products based on their needs, saving them considerable time when choosing which Round Angle Exhaust Cat Back Systems to buy. We take pride in the number of satisfied users we've helped through our thorough and insightful reviews.