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The Best Cat-Back Exhaust Systems of 2026 (Ranked)

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Cat-back exhaust systems — in use

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The short version: a cat-back exhaust is the mod you buy for the sound — the biggest tonal upgrade that’s still street-legal, because it leaves your catalytic converters in place. After weighing hundreds of owner reviews, our #1 pick is the Borla S-Type: aggressive on throttle, civilized at cruise, and built in bulletproof T-304 stainless with a lifetime warranty. Drive a lot of highway and dread drone? The MagnaFlow Touring is the drone-free champion. Want it loud? Borla ATAK. On a budget, the MagnaFlow Street Series is a proper stainless system for less.

Not sure how "cat-back" differs from "axle-back" or headers? Start with exhaust types explained, and see where exhaust fits in the smart build order in first mods for your car.

Top Picks at a Glance

Best Overall
Borla S-Type Cat-Back Exhaust
5.0
Check Price
Best Value
MagnaFlow Street Series Cat-Back
4.8
Check Price
Best Drone-Free
MagnaFlow Touring Series Cat-Back
4.2
Check Price

Best Cat-Back Exhausts 2026: The Ranked Field

#2
Best Drone-Free
MagnaFlow Touring Series Cat-Back
4.29 ratings

Best for a deeper note with the least highway drone

  • Straight-through, mandrel-bent stainless
  • Tuned for a mellow, refined tone
  • Minimal cruise drone — road-trip friendly
  • Lifetime limited warranty

Why buy it: the pick for owners who want a richer exhaust note but still take long highway drives — MagnaFlow’s Touring tuning is the go-to for keeping cabin drone to a minimum.

~$850 Check Now Where to buy: Amazon
#3
Best Aggressive Sound
Borla ATAK / Touring Cat-Back
4.52 ratings

Best for the loudest, most aggressive street-legal note

  • Borla’s loudest patented sound technology
  • T-304 stainless mandrel-bent construction
  • Race-bred straight-through flow
  • Million Mile Warranty

Why buy it: for owners who want maximum attitude — Borla’s most aggressive tuning delivers the wide-open race note enthusiasts chase, while staying a bolt-on cat-back that keeps your cats intact.

~$1,200 Check Now Where to buy: Amazon
#4
Best Value
MagnaFlow Street Series Cat-Back
4.85 ratings

Best for a quality stainless cat-back for less money

  • Deep, aggressive Street Series tone
  • Mandrel-bent stainless, polished tips
  • Bolt-on fit, no welding
  • Lifetime limited warranty

Why buy it: the value sweet spot — a proper mandrel-bent stainless MagnaFlow with a deeper, more aggressive note than the Touring, at a price that undercuts the premium systems.

~$650 Check Now Where to buy: Amazon
#5
Best Mild / Refined
Borla Touring Cat-Back Exhaust
4.6400+ reviews

Best for a subtle upgrade you won’t regret on a commute

  • Borla’s mildest, most refined tuning
  • T-304 stainless mandrel-bent tubing
  • Smooth power delivery, quiet cruise
  • Million Mile Warranty

Why buy it: the smart choice if you want better sound and flow but hate drone — Borla’s Touring tune is the quietest in the lineup, perfect for a daily driver or a shared garage.

~$1,000 Check Now Where to buy: Amazon

Quick Comparison

ProductBest forRatingPriceBuy
Borla S-Type Cat-Back Exhaust Best Overall 5.0 ~$1,100 Check
MagnaFlow Touring Series Cat-Back Best Drone-Free 4.2 ~$850 Check
Borla ATAK / Touring Cat-Back Best Aggressive Sound 4.5 ~$1,200 Check
MagnaFlow Street Series Cat-Back Best Value 4.8 ~$650 Check
Borla Touring Cat-Back Exhaust Best Mild / Refined 4.6 ~$1,000 Check

How We Rank

Exhaust is subjective — one owner’s "perfect note" is another’s headache — so we rank by the collective verdict rather than a single opinion: aggregated owner ratings, review volume, and the themes owners repeat. We weigh four things. Sound — the tone on throttle, and just as important, whether it drones at highway cruise. Build quality — T-304 vs T-409 stainless, mandrel bends, and weld quality that decides whether it survives road salt for years. Fit — a true bolt-on with proper hangers and no rattles. And value, weighing sound-per-dollar and the warranty behind it. Prices were current at the time of writing.

The Exhausts, Reviewed

1. Borla S-Type — Best Overall

The one enthusiasts recommend without hesitation. Borla’s patented notched-tube tech gives it an aggressive, throaty tone on throttle that backs off to a livable hum at cruise, and the T-304 stainless is warrantied for life. Pros: superb sound balance, top-tier stainless, made in USA, Million Mile warranty. Cons: premium price, and it’s still noticeably louder than stock if you have neighbors.

2. MagnaFlow Touring Series — Best Drone-Free

The road-tripper’s exhaust. MagnaFlow’s Touring tuning deepens the note while keeping cruise drone to a minimum — the top choice for owners who log real highway miles. Pros: deeper tone, minimal drone, quality stainless, lifetime warranty. Cons: more subtle than aggressive, so sound-chasers may want more.

3. Borla ATAK — Best Aggressive Sound

Maximum attitude, still street-legal. Borla’s ATAK is its loudest tuning, delivering the wide-open race note enthusiasts chase while leaving the cats in place. Pros: the most aggressive sound here, race-bred flow, top stainless, lifetime warranty. Cons: most expensive, and the loudest — expect some cabin drone and attention.

4. MagnaFlow Street Series — Best Value

A proper mandrel-bent stainless MagnaFlow at a friendlier price. The Street Series tune is deeper and more aggressive than the Touring, making it a lot of exhaust for the money. Pros: great value, aggressive note, quality build, lifetime warranty. Cons: more drone than the Touring, and polished tips can discolor over time.

5. Borla Touring — Best Mild / Refined

Borla’s quietest, most refined tune. It improves sound and flow while staying subtle enough for a daily commute or a shared garage, with the same bulletproof T-304 stainless. Pros: smooth and drone-free, top stainless, lifetime warranty, daily-friendly. Cons: the mildest sound upgrade here, so it won’t satisfy owners who want to be heard.

How to Choose a Cat-Back Exhaust

Start with how loud you actually want it — and be honest about your commute. If you drive a lot of highway or share walls with neighbors, a Touring or S-Type tune that resists drone will make you far happier than the loudest race system. Next, check the material: T-304 stainless (Borla) resists rust and discoloration best, while T-409 is cheaper but ages faster in the salt belt. Confirm it’s a true direct-fit, bolt-on system for your exact year and engine so there’s no welding or trimming. Finally, weigh the warranty — a lifetime or Million Mile warranty tells you the maker trusts its own welds. And remember: a cat-back is a sound-and-character mod, so buy it for the note, not for horsepower.

The Verdict

For the best all-round cat-back, the Borla S-Type nails the balance of aggression and daily livability that most owners want. Log serious highway miles? The MagnaFlow Touring is the drone-free pick. Want it loud? Borla ATAK. On a budget, the MagnaFlow Street Series delivers real stainless quality for less. Check the current price on Amazon →

// Straight Answers

Frequently Asked

What is the best cat-back exhaust?

Across the market, owners rate the Borla S-Type highest as an all-rounder — it delivers a genuinely aggressive tone on throttle without brutal drone at cruise, in made-in-USA T-304 stainless with a Million Mile warranty. If you want the deepest note with the least highway drone, the MagnaFlow Touring Series is the go-to. Want the loudest street-legal setup? Borla’s ATAK tuning. The right pick depends mostly on how loud you want it and how much highway you drive.

What is the difference between axle-back and cat-back?

An axle-back replaces only the rear section — the muffler and tips behind the rear axle — so it is the cheapest, easiest and mildest change. A cat-back replaces everything from the catalytic converters back, including the mid-pipe and muffler, so it flows better and changes the sound far more. For most owners the cat-back is the sweet spot: the biggest sound-and-flow upgrade that is still street-legal because it leaves the catalytic converters in place. We break down the whole exhaust chain in our exhaust types explained guide.

Will a cat-back exhaust cause drone?

It can, and drone — that resonant boom in the cabin at steady highway speeds — is the number-one complaint owners have about exhausts. The good news is it is very system-dependent. Straight-through Touring or "S-Type" tunings are engineered to minimize it, while the loudest race-style systems drone the most. If you do a lot of highway miles, choose a system specifically reviewed as drone-free, like the MagnaFlow Touring or Borla Touring, rather than the most aggressive option.

Is a cat-back exhaust street-legal?

Yes, in almost all cases. A cat-back leaves your catalytic converters untouched, so it does not affect emissions equipment and is federally legal. The only caveat is sound: some states and localities have noise limits, and a few areas enforce them, so an extremely loud system could draw attention. Anything that removes or replaces the catalytic converters (a "cat-delete" or straight-pipe) is a different story and is illegal for street use — a cat-back is not that.

Does a cat-back exhaust add horsepower?

A little, but sound is the real reason to buy one. On a naturally aspirated street car a quality cat-back typically frees up only a handful of horsepower, because the biggest restriction (the catalytic converters) stays in place. The honest benefits are a much better exhaust note, a small flow improvement, and reduced weight versus the stock system. If your goal is big power, tuning a forced-induction engine delivers far more than any exhaust — see our tuner and programmer rankings.