Verified
Spools like a different car
Backpressure gone. Boost comes in a full 400rpm sooner and it pulls all the way to redline now. Fitment was dead-on — no massaging, no fighting the O2 bungs.
Marcus D.
AMG GT Downpipes
$1,430.00
Sale price
$1,430.00
Regular price
$1,745.00
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C190 · M178
AMG GT Downpipes
Unleash the true power and performance of your Mercedes-AMG GT series with MBH Motorsports Catless Downpipes. The factory exhaust system on the 4.0L biturbo V8 is heavily restricted, choking the engine's true supercar potential. By eliminating these severe bottlenecks, our...
- Engine Mercedes-AMG M178 4.0L V8 Biturbo
$1,430.00
Sale price
$1,430.00
Regular price
$1,745.00
- Made in the USAPhoenix, Arizona
- Hand TIG-weldedMiller Dynasty
- Lifetime warrantyUncoated headers & downpipes
On the dyno
What it puts down.
The gains listed for this part, measured at the wheels. Your numbers will move with the car, fuel and tune.
- Listed gain
Listed gains · at the wheels
Horsepower gain · with ECU tune
100 wheel horsepower gain
Torque gain · with ECU tune
150 wheel torque gain
From this part’s specs: +100 whp · +150 wtqShows the listed range, not a dyno sheet.
Inside the build
What sets these downpipes apart
Fitment
Built for these cars
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C190C190M178
Your car on the list? You're good to go.
The details
Specs & details
Unleash the true power and performance of your Mercedes-AMG GT series with MBH Motorsports Catless Downpipes. The factory exhaust system on the 4.0L biturbo V8 is heavily restricted, choking the engine's true supercar potential. By eliminating these severe bottlenecks, our catless downpipes drastically reduce backpressure, allowing the twin turbos to spool faster and breathe freely. When paired with a matching performance ECU tune, you can expect staggering, track-dominating gains of over 100 wheel horsepower and 150 ft-lbs of wheel torque.
Unrivaled USA Craftsmanship & Lifetime Warranty
We believe in building the absolute best exhaust components on the market without the artificial markup. You can pay more for competing brands, but you are simply wasting your money. Proudly manufactured right here in the USA, these downpipes are constructed from the highest quality heavy-duty 16-gauge T-304 stainless steel. Every system is 100% precision TIG welded for maximum structural integrity and thermal endurance. We are so confident in our elite build quality that we back these downpipes with a full lifetime warranty.
Key Features:
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Supercar Power Gains: Unlocks over +100 WHP and +150 WTQ when paired with a matching ECU tune.
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Maximized Turbo Efficiency: Catless design eliminates factory restrictions for rapid turbo spool and relentless top-end pull.
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USA 16-Gauge Stainless Steel: Hand-fabricated in the USA using premium heavy-duty American stainless steel.
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100% Precision TIG Welded: Meticulously welded for superior durability and extreme thermal endurance under race conditions.
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Unbeatable Value & Reliability: The finest downpipes available for the AMG GT platform, backed by a lifetime warranty.
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Aggressive Exhaust Note: Dramatically enhances the sound profile, unleashing the raw, unfiltered growl of the 4.0L biturbo V8.
Compatibility:
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Engine: Mercedes-AMG M178 4.0L V8 Biturbo
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Chassis: Mercedes-AMG GT, GT S, GT C, GT R (C190 Coupe / R190 Roadster)
Disclaimer: For off-road racing and competition use only. This product is not intended to be installed on a registered vehicle for use on public roads or highways and may never be installed on a registered or licensed vehicle for use on any public roads and highways.
$1,430.00
Questions about this part?Email us your question or VIN.
Email us
Email us
Straight from the owners
Built, bolted, proven
Real cars. Real dyno sheets. Here's what owners say after the headers go on.
5.0 / 5
3 verified builds
Ready for yours?
Before you order
Straight answers
The questions we get asked most.
Still not sure?
Email us your question or VIN and we'll confirm fitment before you order.
sales@mbhmotorsports.com
Will this fit my car?
It's built for C190 · M178. Pick your car in the fitment check at the top of this page to confirm. Not listed, or engine swapped? Email us your VIN and we'll confirm fitment before you order.
Is there a warranty?
Yes. Headers and downpipes we build carry a lifetime warranty (coated or painted finishes excluded). Email us with any warranty question.
Where is it made?
Right here in the USA, in our Phoenix, Arizona shop.
Can I ask a question before I order?
Yes. Email us with your car and your question and we'll get back to you. If you're unsure about fitment, include your VIN.