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.
SL55 Long Tube Headers
Original 1-3/4" primaries w/ standard collector / No coating
$2,085.00
Sale price
$2,085.00
Regular price
$2,600.00
Skip to product information
R230 · M113K
SL55 Long Tube Headers
Engineered and perfected on our own in-house shop car, the MBH Motorsports SL55 AMG Long Tube Headers are designed to deliver extraordinary performance. By eliminating severe factory exhaust restrictions, this system unlocked an astonishing +46 wheel horsepower over stock during...
$2,085.00
Sale price
$2,085.00
Regular price
$2,600.00
- 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
46 wheel horsepower gain
From this part’s specs: +46 whpShows the listed range, not a dyno sheet.
Inside the build
What sets these long tube headers apart
Fitment
Built for these cars
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R230R230M113K
Your car on the list? You're good to go.
The details
Specs & details
Engineered and perfected on our own in-house shop car, the MBH Motorsports SL55 AMG Long Tube Headers are designed to deliver extraordinary performance. By eliminating severe factory exhaust restrictions, this system unlocked an astonishing +46 wheel horsepower over stock during our dyno testing—giving the heavy R230 chassis the aggressive, raw acceleration needed to outrun many modern supercars.
Built to uncompromising standards, these headers feature heavy-duty 16-gauge T-304 stainless steel primary tubes mated to warp-resistant T-321 stainless steel flanges. To guarantee maximum exhaust gas velocity, every unit is precisely purge-welded and individually hand-ported at the flange to ensure flawlessly smooth internal airflow with zero turbulence.
Handcrafted USA Quality & Precision Fitment
Proudly hand-fabricated in the USA, this header system is the ultimate starting point if you are looking to add substantial, dyno-proven power to your SL55 AMG. Beyond the sheer power increase, it unlocks the aggressive supercharged V8 roar that the M113K engine is famous for.
Key Features:
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Massive Power Gains: Dyno-proven to add +46 wheel horsepower over restrictive stock exhaust manifolds.
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In-House Developed: Fine-tuned and rigorously tested on the MBH Motorsports SL55 AMG project car for optimal performance.
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USA 16-Gauge T-304 Stainless Steel: Handcrafted in the USA using premium American stainless steel for ultimate thermal endurance.
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T-321 Stainless Flanges: Utilizes ultra-durable T-321 stainless steel at the mounting flanges to prevent warping and exhaust leaks under extreme heat.
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Precision Craftsmanship: Fully purge-welded and hand-ported to eliminate turbulence and maximize exhaust scavenging.
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Broad Compatibility: Fits R230 SL500 models when paired with smaller connecting pipes.
Compatibility:
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Engine: Mercedes-AMG M113K 5.4L V8 Supercharged (SL55) / M113 5.0L V8 (SL500)
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Chassis: Mercedes-Benz SL55 AMG & SL500 (R230)
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.
Original 1-3/4" primaries w/ standard collector / No coating
$2,085.00
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 R230 · M113K. 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.