8 Best Cat Back Exhaust Systems of 2026

Unleash the raw muscle of your Silverado or Sierra with the Flowmaster 717857 FlowFX Cat-Back Exhaust Kit — a system engineered to transform both sound and soul. With its 3-inch mandrel-bent 409 stainless steel tubing and straight-through FlowFX muffler, this exhaust delivers a deep, aggressive tone that resonates inside and out, turning heads while reducing backpressure for improved engine efficiency. The 4.5-inch black ceramic-coated tip isn’t just for show — it resists corrosion and heat discoloration, making it a durable upgrade for trucks that work hard and play harder.

In real-world driving, the FlowFX kit shines on the highway and under throttle, where its free-flowing design enhances mid-range torque and gives the 5.3L and 4.3L V6 engines a much-needed vocal identity. The system maintains a rich, rumbling note at idle that mellows into a smooth growl under cruise, avoiding the drone that plagues cheaper systems. Installation is a breeze thanks to OEM hanger compatibility, and the full stainless build ensures long-term resilience against rust and road salt — though those in extreme climates may want to inspect weld joints periodically. It doesn’t add massive horsepower on its own, but paired with tuning, the performance gains become more tangible.

This system stands tall against the MBRP S5236AL, offering a full stainless construction where the MBRP uses aluminized steel — a clear win for longevity. While it’s heavier than some dual-exit setups like the Rough Country 96006, it trades flash for consistent, deep acoustics and OEM-level fitment. Ideal for truck owners who want a no-nonsense, bolt-on upgrade with serious sonic character, the Flowmaster 717857 is the top pick for 2014–2019 Chevy and GMC 1500 owners seeking authenticity and durability. It delivers more refinement and material quality than budget options, without the complexity of dual-side exits.

For F-150 Ecoboost owners craving a thunderous presence without sacrificing daily driveability, the Flowmaster 717864 FlowFX Cat-Back Exhaust is a powerhouse in disguise. Its 3-inch mandrel-bent stainless steel tubing and straight-through FlowFX muffler work in harmony to reduce exhaust restriction, letting the 3.5L twin-turbo V6 breathe easier and sound bolder. The 4.5-inch black ceramic-coated tips add a menacing visual punch, while the system’s engineering ensures a deep, resonant tone that’s aggressive on acceleration but never obnoxious at cruise — a sweet spot many performance exhausts fail to hit.

On-road testing reveals a noticeable improvement in throttle response, especially when merging or passing, thanks to reduced backpressure and enhanced scavenging. The exhaust note is meaty inside the cabin, but thanks to tuned acoustics, cabin drone is minimal — a win for long-haul drivers. It installs using factory hangers, eliminating guesswork, and the 409 stainless steel construction holds up well in humid or salty environments. However, under wide-open throttle, the turbo whine can slightly mask the exhaust growl, which might disappoint purists seeking a raw V8-like roar.

Compared to the Rough Country 96006, this Flowmaster system trades dual side exits for cleaner rear-end aesthetics and a more traditional single exit. While it lacks the visual drama of dual tips, it wins in sound consistency and OEM-level integration. It’s best suited for F-150 owners who prioritize sonic depth and reliability over flashy design — particularly those with Ecoboost engines wanting a balanced upgrade. It offers better material quality and tone control than the MBRP aluminized systems, making it a smarter long-term investment despite a higher initial outlay.

Turn your F-150 into a head-turning beast with the Rough Country 96006 Dual Cat-Back Exhaust, where form and function collide in a symphony of aggression and style. The dual side-exit design with 304 stainless steel black tips delivers a rugged, off-road-ready look that sets it apart from factory-like single exits. Constructed from 16-gauge 409 stainless steel, this system resists corrosion while handling the thermal stress of daily driving and towing, and the dual-wall muffler ensures a deep, throaty tone without excessive interior resonance.

On the trail or highway, the dual exhaust paths enhance engine efficiency, giving the V6 and V8 F-150s a more responsive feel, particularly in the low-to-mid RPM range. The side-exit configuration produces a wide, stadium-like sound that’s especially noticeable at idle and low speeds — perfect for making an entrance. Installation is straightforward with OEM hanger compatibility and no welding required, though some users may need to adjust clamps for perfect alignment. The system’s main drawback is its exposed side tips, which are vulnerable to road debris and curbs in tight parking situations.

When stacked against the Flowmaster 717864, the Rough Country system trades subtlety for bold visual impact and a wider sound profile. While the Flowmaster offers a cleaner factory-integrated look, this one is for F-150 owners who want their truck to stand out in both sound and style. It’s ideal for off-road enthusiasts and custom builders who value aesthetics as much as performance. Compared to the MBRP aluminized options, it uses similar materials but delivers a far more distinctive presence, justifying the premium for those who want their exhaust to be a statement.

The MBRP S5236AL is the budget-savvy builder’s dream — a no-frills, high-value cat-back that delivers real performance gains without breaking the bank. Its 3-inch aluminized steel tubing may not match full stainless systems in longevity, but it’s built to resist rust far better than standard steel, offering solid protection for moderate climates. The single side-exit design with a mirror-polished T304 tip gives trucks a clean, aggressive profile, while the tuned muffler produces a rich, mellow tone that’s noticeable but not overbearing — perfect for daily drivers who want a hint of muscle.

In real-world use, the S5236AL improves throttle response and delivers a measurable bump in torque, especially in the low-end range where trucks need it most. It’s particularly effective on heavier loads or uphill climbs, where reduced backpressure helps the engine work more efficiently. Installation is a breeze with common hand tools, and the system fits snugly using factory hangers. However, in wet or snowy climates, the aluminized coating can degrade over time, requiring more frequent inspections than stainless alternatives. It’s also quieter than the Flowmaster FlowFX, which may disappoint those chasing a deep roar.

Against the Flowmaster 717857, the MBRP trades long-term durability for affordability and ease of install. It’s not designed to last decades, but for short-to-mid-term upgrades or project vehicles, it’s hard to beat. This system is ideal for DIYers and first-time upgraders who want real performance benefits without the premium price tag. It outperforms cheaper generic kits in both sound and build quality, offering a smarter entry point than stainless options — especially when future upgrades are planned.

The PHILTOP Cat-Back System breathes new life into the already sporty Infiniti G37, transforming its exhaust note into a sophisticated snarl that matches the car’s luxury-sport DNA. Crafted from T-304 stainless steel with computerized mandrel bends, this system ensures smooth exhaust flow, reducing backpressure and unlocking hidden low-end torque. The 2.37-inch piping and oval muffler design are optimized for the 3.7L V6, delivering a balanced, aggressive tone that’s loud enough to impress but never intrusive — a perfect fit for drivers who want performance with refinement.

On winding roads or city commutes, the PHILTOP system enhances engine responsiveness, making downshifts more rewarding and acceleration more immediate. The 3.5-inch T-304 black tip adds a subtle visual upgrade without looking overdone, and the TIG-welded flanges ensure leak-free performance over time. Installation is direct bolt-on with included gaskets and hardware, making it accessible for home mechanics. However, those seeking a race-inspired scream may find the tone too mellow — this system prioritizes harmonic balance over raw volume.

Compared to the DNA MOTORING CBE-HC922-NRT, the PHILTOP system offers far superior fitment and material quality, tailored specifically for the G37 rather than a broad-fit universal design. It’s not as flashy as dual-exit systems, but for Infiniti owners who value precision engineering and OEM+ aesthetics, it’s unmatched. It delivers a more refined, durable upgrade than budget kits, with a sound profile that complements the G37’s grand-touring character better than louder, coarser alternatives.

The MBRP Catback Exhaust AL is a no-nonsense powerhouse built for GM’s full-size SUVs, delivering rugged performance and seamless integration across a wide range of models. With compatibility spanning the Tahoe, Suburban, and Escalade from 2015–2020, this system is a go-to for fleet managers, towing enthusiasts, and families who demand reliability. Constructed with durable aluminized steel, it offers solid corrosion resistance for daily drivers, while the 3-inch diameter tubing reduces backpressure to improve throttle response and towing efficiency.

In real-world testing, the system enhances low-end torque — a critical advantage when hauling heavy trailers or navigating steep inclines. The exhaust note is rich and throaty without excessive cabin drone, making it suitable for long family trips. Installation follows OEM hanger points, ensuring a secure fit without modifications. However, like all aluminized systems, it’s best suited for dry or moderate climates — prolonged exposure to salt or moisture will shorten its lifespan compared to full stainless options.

Stacked against the Flowmaster 717857, the MBRP AL trades longevity for broad compatibility and ease of install. While the Flowmaster uses full stainless steel, this MBRP targets GM SUV owners who need a reliable, wide-fit solution without the premium cost. It’s ideal for those upgrading stock systems for better performance and sound, particularly in service vehicles or high-mileage SUVs. It offers more model coverage and simpler logistics than vehicle-specific stainless kits, making it a smarter choice for versatile, functional upgrades.

Don’t let the price fool you — the DNA MOTORING CBE-HC922-NRT is a budget titan that punches far above its weight in performance and build quality. Designed for 1992–2000 Honda Civics, this T-304 stainless steel system is dyno-proven to add 15–25 horsepower, thanks to its low-restriction muffler and tuned resonators that slash backpressure and improve exhaust scavenging. The 2.37-inch mandrel-bent piping ensures smooth gas flow, unlocking hidden potential in the D-series and B-series engines, while the oval muffler design fits tight engine bays without compromise.

On the street, the difference is immediate: sharper throttle response, a deeper idle burble, and a smooth, aggressive tone under acceleration that turns heads without drawing tickets. Installation is straightforward with a direct bolt-on design, and the TIG-welded CNC flanges resist warping and leaks — rare at this price point. However, the universal fitment means some users may need to adjust hangers or clamps for perfect alignment, and the sound, while impressive, lacks the refinement of higher-end systems like the PHILTOP G37 kit.

Compared to the MBRP S5236AL, the DNA MOTORING system offers true stainless steel at a fraction of the cost, making it the best value for classic Honda fans. It’s not designed for luxury SUVs or modern trucks, but for Civic enthusiasts restoring or modifying EJ, EG, or EM1 chassis, it’s a no-brainer. It outperforms generic kits in both power and durability, delivering a race-ready upgrade without the race-ready price, especially when paired with a cold air intake and tuning.

The Flowmaster 817510 Force II is the undisputed king of all-around performance, blending elite engineering, thunderous sound, and unmatched versatility into one premium package. At its heart lies the exclusive Scavenger Series X-pipe, which enhances exhaust pulse scavenging for maximum horsepower and torque gains, especially in the mid-to-high RPM range. Paired with 60 Series performance mufflers and 16-gauge mandrel-bent stainless steel tubing, this system delivers a deep, aggressive tone that’s rich in harmonics — loud enough to impress, but never fatiguing on long drives.

Real-world testing shows significant improvements in acceleration and engine efficiency, particularly on V8-powered trucks and muscle cars. The exhaust note is full-bodied and commanding, with a burble at idle that turns into a roar under load — perfect for enthusiasts who want their vehicle to sound as powerful as it performs. Installation is simplified with included hangers and hardware, though the system’s complexity demands careful alignment. It’s heavier than single-muffler setups, and the aggressive tone may be too much for quiet neighborhoods.

When compared to the Flowmaster 717857, the Force II offers superior flow and power potential thanks to the X-pipe and advanced muffler tuning. It’s not the cheapest or lightest option, but for those seeking the best overall performance and sound, it’s unmatched. Ideal for modified trucks, muscle cars, and high-performance builds, this system justifies its premium with pro-level gains and acoustic excellence. It outperforms even the Rough Country dual-exit in power delivery, making it the ultimate choice for serious enthusiasts.