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.
C63S AMG W205 Heatshield Downpipes
$781.00
Sale price
$781.00
Regular price
$831.00
Skip to product information
W205 · M177
C63S AMG W205 Heatshield Downpipes
The Flowsport C63S AMG (W205) Heatshield Downpipes are engineered to deliver incredible performance and unbeatable value for your M177-powered Mercedes. The factory exhaust system restricts the 4.0L biturbo V8, but these upgraded downpipes eliminate those bottlenecks to provide significant horsepower...
- Engine Mercedes-AMG M177 4.0L V8 Biturbo
- Chassis Mercedes-Benz C63 / C63 S AMG (W205)
$781.00
Sale price
$781.00
Regular price
$831.00
- Direct fitW205 · M177
- Pay over time4 payments with Shop Pay
- 5-year warrantyFlowsport+ limited
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 with a “+”: this much or more
Listed gains · at the wheels
Horsepower gain
100 or more wheel horsepower gain
Torque gain
100 or more wheel torque gain
From this part’s specs: 100+ whp · 100+ 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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W205W205M177
Your car on the list? You're good to go.
The details
Specs & details
The Flowsport C63S AMG (W205) Heatshield Downpipes are engineered to deliver incredible performance and unbeatable value for your M177-powered Mercedes. The factory exhaust system restricts the 4.0L biturbo V8, but these upgraded downpipes eliminate those bottlenecks to provide significant horsepower and torque gains. Designed as a must-have upgrade for any W205 C63S owner, these downpipes allow the turbos to spool faster and the engine to breathe efficiently, completely waking up the driving dynamics of your AMG.
Advanced Thermal Management & TIG Welded Durability
One of the biggest challenges in a hot-V engine configuration is managing extreme heat. These downpipes feature integrated heatshield-wrapped tubes designed specifically to keep under-hood temperatures as low as possible, protecting sensitive surrounding components and preventing heat soak. Constructed from premium 304 stainless steel and precision TIG welded for maximum longevity, the Flowsport Heatshield Downpipes are built to handle serious driving and are backed by a robust 5-year warranty.
Key Features:
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Significant Power Increases: 100+ whp 100+ wtq. Alleviates factory backpressure for noticeable gains in horsepower, torque, and turbo spool efficiency.
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Integrated Heatshield Wrapping: Advanced thermal management dramatically lowers under-hood temperatures to prevent heat soak.
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304 Stainless Steel: Constructed from high-quality stainless steel to withstand severe thermal stress and resist corrosion.
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Precision TIG Welded: Meticulously assembled for exceptional structural durability and a perfect seal.
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Incredible Performance Value: Delivers premium power gains and thermal protection at a highly competitive price point.
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5-Year Warranty: Backed by a comprehensive 5-year warranty for lasting peace of mind.
Compatibility:
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Engine: Mercedes-AMG M177 4.0L V8 Biturbo
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Chassis: Mercedes-Benz C63 / C63 S AMG (W205)
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.
$781.00
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 W205 · M177. 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. Flowsport+ headers and downpipes carry a 5-year limited warranty from the ship date. If they crack or a weld fails in the first year, we repair or replace them. For the remaining 4 years, we repair them. See our warranty policy for details.
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.