SKU: 22064641271

MAD Axle Back Exhaust - BMW / G8X / S58 / M3 / M4

Sale price$837.27 Regular price$930.30
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Ships within 48 hours · Estimated delivery Jul 11 - Jul 16

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Description

MAD Axle Back Exhaust - BMW / G8X / S58 / M3 / M4MAD BMW M3 M4 G8x S58 Axle Back Exhaust Unleash the full potential of your G8x M3 M4 with the MAD Axle Back Exhaust system, designed to elevate both the sound and performance of BMWs iconic S58 engine. Engineered with precision and passion, this exhaust system ensures your driving experience is as exhilarating as it is distinctive. Key Features: Enhanced Sound Quality: Say goodbye to the stock rasp and hello to a deeper, more resonant tone. The MAD

MAD BMW M3/M4 G8x S58 Axle Back Exhaust

Unleash the full potential of your G8x M3/M4 with the MAD Axle Back Exhaust system, designed to elevate both the sound and performance of BMW’s iconic S58 engine. Engineered with precision and passion, this exhaust system ensures your driving experience is as exhilarating as it is distinctive.

Key Features:

  • Enhanced Sound Quality: Say goodbye to the stock rasp and hello to a deeper, more resonant tone. The MAD Axle Back Exhaust is crafted to provide a rich, aggressive exhaust note that embodies the spirit of performance, enhancing the S58’s inherent roar without overwhelming cabin noise.

  • Increased Flow and Performance: With a larger tubing diameter of 76mm (compared to the stock 70mm), this system reduces backpressure and promotes smoother exhaust flow, resulting in noticeable gains in horsepower and torque. Expect a robust performance boost, with up to +5 HP and +5 lb-ft of torque, enhancing both acceleration and throttle response.

  • Versatile Exhaust Modes: Featuring a valved design, the MAD exhaust system allows you to switch between a subdued, deep tone during low-speed cruising and an aggressive, near-straight pipe sound at high loads. The stock exhaust valve actuators are retained, ensuring seamless operation via the M-drive settings, giving you control over your car’s sound profile.

  • Quality Construction: Built to last, the entire system is made from 100% T304 stainless steel, ensuring durability and resistance to corrosion. TIG-welded for superior strength and visual appeal, the exhaust system is meticulously brush-finished, offering a sleek, polished look right out of the box.

  • Seamless Integration: Designed for a factory-like fit, the MAD Axle Back Exhaust includes all necessary mounting hardware for easy installation. The quad 4-inch (100mm) clamp-on tips are engineered to fit perfectly within the factory cut-outs, enhancing the car’s aesthetics with a refined, OEM+ appearance.

  • Optimized for Performance: The system’s drone-abatement technologies effectively reduce cabin resonance, providing a pleasurable driving experience without intrusive noise. Whether you’re cruising on the highway or tackling twisty backroads, the MAD exhaust ensures a harmonious blend of performance and comfort.

Specifications:

  • Diameter: 76mm tubing for increased flow

  • Tips: Quad 4-inch (100mm) clamp-on tips

  • Weight: 7 pounds lighter than the stock axle-back (Stock: 44 pounds vs. MAD: 37 pounds)

  • Construction: 100% T304 stainless steel

  • Compatibility: Connects to factory midpipe (cutting required) or MAD single midpipe (no cutting required)

  • Includes: Extended valve harness and all necessary mounting hardware

 

Shipping Notes
  • Free Standard Shipping on $100+ Orders to the USA.
  • Except Preorder products are shipped in 48 hours.
  • Delivery to the USA:
  1. Standard Shipping : 3-10 business days
  • If time is of the essence, please consider selecting expedited delivery for faster service.
Exchange/Return Notes
  • We offer a 30-day return/exchange service after receiving.
  • Final sale items are not eligible for returns or exchanges.
  • To process your return/exchange, please contact us at [email protected]
  • Please click here for more details>>> Return & Exchange Policy
SKU: 22064641271

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4.4 ★★★★★
Based on 539 reviews
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Verified Purchase
Diane K
Lexington, US
★★★★★ 1
Product doesn't work as advertised
This product does not provide enough wipes to remove more than the minimum amount of oxidation. The headlights were starting to yellow, so the oxidation was not severe. We followed the directions on the box to the letter and after using the wipes as directed were left with a sticky residue (which was left-over oxidation that the drying wipes could not remove). I am forced to purchase another box of the product in order to complete the job. I can't drive my car around with the tape protecting the body of the car on it, plus this is Florida so there would be bugs stuck in the tape and the sticky residue. A terrible product. Plus when I called them they said they would send me an email so I can tell them what the problem is and they would give it to their "research" staff to handle. I'm doing that and perhaps they will reimburse me for the second box I will have to get overnighted in order to finish the job.
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Reviewed in the United States on April 18, 2025
L
Verified Purchase
Lissi
Fort Morgan, US
★★★★★ 5
Armor All Car Headlight Cleaner Wipes – Quick & Easy Clarity
The Armor All Car Headlight Cleaner Wipes are a convenient and effective solution for restoring foggy, yellowed, or hazy headlights without the need for complicated kits. These pre-moistened wipes make it super easy to wipe away oxidation and dirt, improving visibility and enhancing the car’s overall appearance. ✅ Pros: Quick & Easy to Use: No need for additional tools or sanding. Restores Clarity: Helps reduce haze and oxidation buildup. Convenient Packaging: Portable and easy to store in the car. No Harsh Chemicals or Strong Odors. ⚠️ Cons: May Require Multiple Uses for Heavily Oxidized Headlights. Not a Permanent Fix: Works best for maintenance but may not fully restore very cloudy headlights. Can Leave a Slight Residue: Needs buffing for the best shine. Final Verdict: For a quick fix and easy maintenance, the Armor All Headlight Cleaner Wipes are a great go-to option. They work well for light oxidation and keeping headlights clear, but for severely foggy lights, a full restoration kit may be needed. Great for touch-ups and convenience
WAS THIS REVIEW HELPFUL?YesReportShare
Reviewed in the United States on February 23, 2025
P
Verified Purchase
Paco14
San Leandro, US
★★★★★ 5
Foggy foggy to crystal clear in less than an hour!!! True story!
Pleasantly surprised at a)how easy this kit was to use, b) the results of the kit and I highly recommend this kit. Took my headlights from completely foggy to crystal clear as if they were brand new. Only took about 30 minutes with a little elbow grease. Great product at a great price!
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Reviewed in the United States on February 1, 2026
T
Verified Purchase
Tracy
Lowell, US
★★★★★ 2
If you buy it, buy 6 or 7,8 boxes
This is a great product! If you buy 6 to 7 kits! Making it very expensive!!! Once you get started, you can’t stop without buying more kits. It gets worse and worse using any other product. It last a good 8 to 12 month, if you use 7, 8, or 9 kits. It will work the crap out of you, wiping and wiping, scrubbing! Don’t even get started with it, they give you enough of the good stuff to work on a 2 year old car, showing zero signs of oxidation. I’m an Armor All fan! Armor All has the best interior cleaner, a good protectant, & many other good products.. but this product has cost me money and a lot of time. Not happy Armor All.
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Reviewed in the United States on May 6, 2025
T
Verified Purchase
the menace
San Leandro, US
★★★★★ 5
wow, ahead of the rest, easy to use
Style: Headlight Restore & Repel Kit
wow, i have used a lot of products for my cloudy headlight lens. this was the easiest and the best so far. on a dry clean headlight, open the foil envelope and get the wipe out, wipe the cloudy headlight and it really gets the job done, a yellow stain builds up on the wipe. one wipe for each headlight. wipe dry with microfiber, then spray the sealant and let it sit, just wipe any excess run off on the car body. poof, done! looks good. says it can last up to 18 months. not sure about that, but i will take what i have now. go nu finish, another solid product.
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Reviewed in the United States on May 23, 2026

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