SKU: 7163752784

Active Autowerke Midpipe w/ X-pipe & Flat Free-Flow Cats - 2021+ G8x M3 / M4

Sale price$1115.14 Regular price$1239.05
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Ships within 48 hours · Estimated delivery Aug 19 - Aug 24

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Description

Active Autowerke Midpipe w/ X-pipe & Flat Free-Flow Cats - 2021+ G8x M3 / M4Active Autowerke is proud to release the highly anticipated Signature Mid Pipe with X Pipe for the BMW G80 M3 and G82 M4. While these cars have received rave reviews for their performance, the sound is a muffled one leaving the driver to wonder if they are really driving a BMW M car. In order to solve this, Active Autowerke has created a full exhaust system for the G80 G82 which comprises this mid pipe, a rear axle back valved exhaust and a set of

Active Autowerke is proud to release the highly anticipated Signature Mid-Pipe with X-Pipe for the BMW G80 M3 and G82 M4. While these cars have received rave reviews for their performance, the sound is a muffled one leaving the driver to wonder if they are really driving a BMW M-car. In order to solve this, Active Autowerke has created a full exhaust system for the G80/G82 which comprises this mid-pipe, a rear axle-back valved exhaust and a set of GESI catted downpipes. Together, this remake of the stock exhaust results in a G80/G82 with an amazing sound. You will feel like you are driving a true M-car again. For the product launch, we are shipping systems without the secondary cats so you will need to provide an affidavit for race use.

This exhaust system upgrade was designed and engineered to work with most after-market exhaust systems/mufflers on the market today with only a single cut needed in the stock mid-pipe. It is a bolt-on that can be performed by most and the stock mid-pipe can also be reinstated if needed.

This system provides the maximum flow available and restores the sports car growl expected from a BMW M-Series car. An upcoming option replaces the restrictive secondary cats with high-flow 100 cell flat cats that changes the sound slightly providing a deeper sound. There are also plans for a future resonator upgrade for those who prefer a smoother sound to their exhaust systems.

Active Autowerke is able to improve on the factory mid-pipe by increasing the flow and removing the two sets of resonators. The X-Pipe design has a scavenging effect that yields modest horsepower gains.

The Active Autowerke X Pipe system is constructed of 100% 304 brushed stainless steel and has a industry standard warranty against rust.

This latest addition to the Signature line up is a must for the true Enthusiast looking for a better sounding car to match amazing performance.

Features:
Durable 100% 304 Stainless Steel
Only single cut needed with Factory Style Flanges and clamps
Install to all systems that use factory style fitting
One year warranty
Replaces (not removes) secondary cats for better flow and sound

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: 7163752784

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4.3 ★★★★★
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Jennifer3002
Whiting, US
★★★★★ 4
a good choice
Color: Black, Size: Pack of 1, Color: Black, Size: Pack of 1
Assembled chair only to find that the lift cylinder was faulty. Would have preferred to be able to just get a replacement cylinder but calling China didn't seem like a viable option. Guessing which one & buying it online would involve paying for a good portion of what the chair cost. Customer service could only offer a replacement or refund. We're disassembling (so much fun?!) to send it back. The chair itself was very comfortable, assembled fairly easily and instructions pretty clear. Again, if we could only have asked the seller for the replacement part......**Update**...Or if the instructions that seemed so clear were clearer!, as we started to disassemble, we decided to see what would happen if the tension knob (see photo) was loosened. IT ALLOWED THE LIFT CYLINDER TO WORK. Not at all what the instructions say. At any rate, we're keeping the chair.
WAS THIS REVIEW HELPFUL?YesReportShare
Reviewed in the United States on June 4, 2026
J
Verified Purchase
jinju jiang
Cuba, US
★★★★★ 5
This chair is amazing
Color: Sky Blue, Size: Pack of 1, Color: Sky Blue, Size: Pack of 1
⭐⭐⭐⭐⭐ Absolutely love this chair! It was super easy to assemble—I had it set up in no time with clear instructions and minimal effort. The comfort level is fantastic; the seat cushion is just right and the back support makes it great for longer sitting sessions. The color is beautiful in person—clean, modern, and adds a fresh pop to the room without being overwhelming. I also really like the smooth wheels and sturdy build; it feels stable and well-made. Overall, this is a great combination of style, comfort, and value. Highly recommend!
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Reviewed in the United States on May 4, 2026
C
Verified Purchase
Chockalingam Ravi Sundaram
Los Angeles, US
★★★★★ 5
Excellent Ergonomic Chair
Color: Black, Size: Pack of 1
I am incredibly impressed with this chair. The setup was a breeze and took me less than 20 minutes from start to finish. It is exceptionally comfortable, offering fantastic ergonomic support that keeps my back pain-free during long hours of sitting. The materials feel premium and highly durable. Plus, the included 5-year warranty is incredibly helpful and provides great peace of mind. I highly recommend it to anyone looking for a reliable workspace upgrade!
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Reviewed in the United States on May 25, 2026
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Verified Purchase
Maria Velasco
Birmingham, US
★★★★★ 5
Comfortable, Sturdy, and Great for Long Hours
Color: Black, Size: Pack of 1
I am very happy with this office chair. It was easy to assemble, feels sturdy, and is very comfortable to sit in for long periods of time. The ergonomic design provides good back support, and the adjustable features make it easy to find the perfect position. The mesh back keeps me cool throughout the day, and the chair rolls smoothly. Overall, it offers great quality for the price and has made working at my desk much more comfortable. I would definitely recommend it to anyone looking for a reliable office chair. ⭐⭐⭐⭐⭐
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Reviewed in the United States on May 30, 2026
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Verified Purchase
Cheeky M.
Alexandria, US
★★★★★ 5
45 minutes assembly -- piece of cake. Nice chair.
Color: Black, Style: With Headrest, Color: Black, Style: With Headrest
Before I finally landed on this chair I read about a million articles with buying advice for ergonomic desk chairs, looked for second hand expensive chairs, read so many Amazon reviews. Obviously you can spend a whole lot of money on an ergonomic desk chair (even used ones), but I really didn't want to. I just bought this today, so the jury is out on long term wear, ,but I can say that the components feel solid, assembly was easy, it is *very* comfortable so far, and -- even more to the point -- VERY adjustable in so many different ways that physical therapists etc recommended in the articles I read. I am 5 foot 5; in order to put the chair at the right ergonomic height for my particular desk and keyboard, I need a footrest so my feet aren't dangling. But that would be the case with any chair in my setup. The headrest is great, the arms are soft and comfortable, the back support piece is perfect, and everything can be adjusted as you sit in it. Rollers are quiet and stable on laminate floor. The box was a good size and heavy enough (~32 lbs) to be awkward for an unfit middle aged lady to wrangle down apartment steps; however, the Amazon driver brought it straight to my door. The chair was carefully packed. Whoever wrote the assembly instructions (which are in English and Spanish) for this chair is some kind of technical writing genius -- I have never seen clearer or more easy-to-follow instructions. From slicing open the tape on the box to finished chair was 45 minutes for me. All you need for assembly is included -- also fabric gloves (for protecting your manicure? I guess?) and extra bolts and washers. Super buy. If I'd known I could get such an affordable and massive upgrade from my previous garbage chair I would have done it long ago. Great value for the money. I rarely write reviews but all the reviews I read helped me make a great decision, so here ya go.
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Reviewed in the United States on October 29, 2024

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