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.
G63 Biturbo Downpipes
$999.00
Sale price
$999.00
Regular price
$1,350.00
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W463 · M157
G63 Biturbo Downpipes
We have always had a deep appreciation for the iconic G-Wagon platform. From engineering one-off custom lift kits to fabricating our renowned G55 long tube headers, it was only natural for us to bring that same level of dedication to...
- Chassis Mercedes-Benz G63 AMG (Biturbo)
$999.00
Sale price
$999.00
Regular price
$1,350.00
- 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 with a “+”: this much or more
Listed gains · at the wheels
Horsepower gain · with ECU tune
225 or more wheel horsepower gain
From this part’s specs: 225+ whpShows the listed range, not a dyno sheet.
Inside the build
What sets these downpipes apart
Fitment
Built for these cars
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W463W463M157
Your car on the list? You're good to go.
The details
Specs & details
We have always had a deep appreciation for the iconic G-Wagon platform. From engineering one-off custom lift kits to fabricating our renowned G55 long tube headers, it was only natural for us to bring that same level of dedication to the modern G63 AMG. The MBH Motorsports G63 AMG Biturbo Downpipes are widely regarded as the finest exhaust upgrade available for this legendary SUV. Designed to be a mandatory performance upgrade for anyone looking to take their G63 to the next level, these downpipes significantly improve exhaust flow to unlock a dramatic increase in horsepower, relentless torque, and a much more aggressive V8 exhaust note. Please note: Exact performance results may vary based on environmental factors, dyno type, fuel quality, and overall engine age.
Premium Billet Flanges & Handcrafted USA Quality
Proudly manufactured at our facility in Phoenix, Arizona, these downpipes are meticulously hand-fabricated from heavy-duty 16-gauge 304 American stainless steel. To ensure a perfect seal and eliminate the risk of warping under the extreme heat of the biturbo engine, we utilize heavy-duty flanges CNC-machined from solid billet stainless steel—the most robust flanges available in the industry. Furthermore, this system is engineered as a 100% direct bolt-on replacement, ensuring a straightforward and hassle-free installation process.
Key Features:
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Significant Power Gains: 225+ hp 290= tq with tuning. Alleviates severe factory exhaust restrictions to unlock substantial horsepower and torque.
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Aggressive AMG Sound: Dramatically improves the exhaust note, giving the G63 a deep, commanding growl on and off the throttle.
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USA 16-Gauge 304 Stainless Steel: Proudly hand-fabricated in Phoenix, AZ using premium heavy-duty American stainless steel for ultimate thermal endurance.
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Billet Stainless Steel Flanges: Features ultra-durable flanges machined directly from solid billet stainless steel to prevent heat warping and exhaust leaks.
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100% Bolt-On Installation: Precision-engineered for a seamless, direct bolt-on fitment with zero fabrication required.
Compatibility:
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Chassis: Mercedes-Benz G63 AMG (Biturbo)
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.
$999.00
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?
Complete your W463 build
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 W463 · M157. 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.