BenzUnited Parts
Premium Stainless Steel M178 Catless Downpipes for Mercedes-AMG GT / GTS / GTR / GTC
Premium Stainless Steel M178 Catless Downpipes for Mercedes-AMG GT / GTS / GTR / GTC
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For the discerning AMG GT owner who values sophistication and real performance. These high-flow stainless steel catless downpipes are purpose-built for the M178 BiTurbo V8 to deliver improved exhaust flow, quicker turbo response, and a deeper, more composed AMG exhaust note — while preserving the refined character expected of a flagship Mercedes performance car.
Key Features & Benefits
- Reduced Exhaust Backpressure — Allows the turbos to spool more efficiently and build boost faster under load
- Quicker Turbo Response — Sharper throttle feel with more immediate power delivery
- Refined AMG Sound — Deeper, more composed tone that maintains sophistication at cruise
- Precision TIG Welds & Machined Flanges — Creates strong, leak-free connections with exact factory fitment
- Bolt-on V-Band Design — Simple installation in 2–3 hours with no cutting or modifications required
- Heavy-Wall 304 Stainless Steel — High-quality material selected for heat resistance and long-term durability
Compatibility
| Chassis | Years | Models |
|---|---|---|
| R190 | 2015–2023 | AMG GT |
| R190 | 2015–2023 | AMG GT S |
| R190 | 2016–2023 | AMG GT R |
| R190 | 2018–2023 | AMG GT C |
Real M178 Exhaust Sound
Real Sound Demo
Frequently Asked Questions
Do these require a tune?
They work well on stock vehicles. A tune is highly recommended for maximum performance and to clear fault codes.
Are they catless?
Yes — fully catless. Intended for off-road, track, and racing use only.
Will they fit my exact vehicle?
These fit the R190 AMG GT and GT S (2015–2023), GT R (2016–2023), and GT C (2018–2023) — all with the M178 4.0L BiTurbo V8. If your car is on that list, it bolts straight on with no cutting. Not sure? Send us your VIN and we will confirm before you order.
How long does installation take?
Professional shops typically complete the install in 2–3 hours.
BenzUnited Parts • Premium M178 Downpipes • Ships Fast
Off-road and race use only. Not legal for street use or emissions-controlled vehicles. Buyer is responsible for compliance with local laws.
