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Description
ARMYTRIX Stainless Steel Valvetronic Catback Exhaust System Quad Carbon Tips BMW M3 E9x 08-13The Only Brand With Valve Controlled OBD2 Module For Quick and Effortless Installation ARMYTRIX is pleased to present the ultimate exhaust upgrade for the BMW E90 E92 M3. Harvesting the 4. 0L S65 V8 full potential through our meticulously engineered T304 stainless steel system; reinvigorating your experience with enhanced performance and sound. Free flowing capability creates a system that handles exhaust with brutal efficiency realizing increased HP
The Only Brand With Valve-Controlled OBD2 Module For Quick and Effortless Installation ARMYTRIX is pleased to present the ultimate exhaust upgrade for the BMW E90/E92 M3. Harvesting the 4.0L S65 V8 full potential through our meticulously engineered T304 stainless steel system; reinvigorating your experience with enhanced performance and sound. Free flowing capability creates a system that handles exhaust with brutal efficiency realizing increased HP and torque. The refinement and amplification of exhaust note offers unique ambiance. Achieving true independence and brand new auditory sensations like never before. Innovation distinguishes between a leader and a follower. ARMYTRIX is once again at the forefront of another revolutionary advancement. Throw out everything you think you knew about installing valve control. The current exhaust aftermarket is flooded with the '-school approach.' The traditional method requires hours of time consuming and complex wiring works. We have simplified the process, attaching the ARMYTRIX OBDII Module and a few wires to its rightful places; the entire valvetronic comes to life at a press of a button. A pioneer in its field, ARMYTRIX App is a necessary and revolutionary progression of our valvetronic exhaust. We aim to strengthen the personal link between user and machine, by increasing functionality and mobility. Receiving real time updates, with high data logging rate, you are in sync with the pulse of your vehicle. Keep in touch with the conditions that matter to you. Control the configuration of the valves through the easy-to-operate digital interface. Discover the true meaning of liberating freedom. Configuration of the valves is shown by the easy to read display interface. When the Green light is on, the valves are opened. Red indicates valves are closed and Orange means at 3500 rpm the valves will automatically open. Features:- POWER @ 22.3 HP
- WEIGHT: -3.4 kg
- TORQUE: 44.4 Nm
- Precision-Crafted T304 Stainless Steel
- X-Pipe Vicious Scream and Ferocious Power
- View Install Instructions Here.
- BMW M3 E9x 08-13
Shipping Notes
- Free Standard Shipping on $100+ Orders to the USA.
- Except Preorder products are shipped in 48 hours.
- Delivery to the USA:
- 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
4.6 ★★★★★
Based on 19 reviews
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Product Reviews
★★★★★ 5
Quality and comfort
Size: 10.5-11.5 Women/9-10 Men, Color: Black
Comfortable and fit well. I got these to replace a very old pair that finally wore out! Warmth is medium (I wear puffer booties for when it's really cold). Quality on these is great!
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Reviewed in the United States on March 9, 2026
★★★★★ 5
Can't go wrong with Acorn for as long as they last!
Size: 12-13 Women/10.5-11.5 Men, Color: Charcoal
Acorn is just a great company all around. I had bought my husband these slippers over 20 years ago. They are still in great shape although the sole has worn in some places. But nothing's coming apart! However, I decided to replace them for him. His foot is 10.5 and they are a little hard to get on right away-of course, after over 20 years of having "worn in" the original pair, anything would feel tight. So I'm not holding this against them. They will relax with use. The only difference is that the original sole was black and these are tan. I think I would prefer the black, but since it's only being worn in the house, no big deal.
My husband has really cold feet and these slippers never fail to warm his feet right up! He said they feel really soft to walk in and like the cushioning. They're not too heavy and fit him great! I have Acorn slippers myself that I've worn every single day in the house and outside to the mailbox too. They last.
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Reviewed in the United States on April 11, 2026
★★★★★ 4
Very warm.
Size: 13.5-14.5 Women/12-13 Men, Color: Navy Blue
Very warm and comfortable. A little difficult to put on with the collared top.
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Reviewed in the United States on January 19, 2026
★★★★★ 5
You won't be sorry
Size: 10.5-11.5 Women/9-10 Men, Color: Black
Great padding for comfort and terrific warmth. I bought a pair of Acorns 30 years ago and still have them. Updated to a new color and now feel the benefit of newer padding! I used the sizing listed for shoes and like the roominess for thicker sox. Well made and a joy to put on. (Wisconsin)
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Reviewed in the United States on December 25, 2025
★★★★★ 5
Great Slippers
Size: 12-13 Women/10.5-11.5 Men, Color: Charcoal
Comfy, great price, looks great, fits well, size aligned, great quality. Love these slippers.
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Reviewed in the United States on February 16, 2026