SKU: 56630425378

Dinan Valved Axle-Back Exhaust - BMW / G80 / G82 / M3 / M4

Sale price$1083.15 Regular price$1203.50
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Ships within 48 hours · Estimated delivery Aug 17 - Aug 22

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Description

Dinan Valved Axle-Back Exhaust - BMW / G80 / G82 / M3 / M4The G8x M3 M4 is arguably superior in every category to its predecessor but in most, if not all, circles the biggest downfall of the platform is in the sound department. Like the F8x before it with the S55, the S58 in the current generation leaves a lot to be desired. While a step in the right direction from its forerunner the stock vocals still carry far too much rasp that do not fully articulate the refined aggressiveness typical of the brands




The G8x M3/M4 is arguably superior in every category to its predecessor but in most, if not all, circles the biggest downfall of the platform is in the sound department. Like the F8x before it with the S55, the S58 in the current generation leaves a lot to be desired. While a step in the right direction from its forerunner the stock vocals still carry far too much rasp that do not fully articulate the refined aggressiveness typical of the brands signature performance models. Dinan corrects this weakness with a valved axle back exhaust system that elevates the tone to a deeper, more meaningful note while also delivering an extra level of amplification above and beyond its stock counterpart. Coupled with the optional middle exhaust / x-pipe for the platform an even louder, smoother, and fuller soundtrack is possible.

Through extensive development and testing nearly every possible permutation of the exhaust was attempted. Unlike the previous generation where cabin sound/drone was largely unchanged between the sedan and the coupe, that was not the case with the G8x chassis'. This caused countless iterations to be attempted in the quest for a common system that not only sounded superb externally but one that also didn't introduce an overbearing internal cabin drone on either body type. The result is a system we are confident will be coveted by all for years to come. To achieve desired sound volume and tone worthy of the G8x M3/M4 the tubing was enlarged to 76mm (vs 70mm stock) to allow freer flow, and reduce backpressure, throughout the entirety of the system. The larger piping gives way to multiple pathways as it nears the rear of the vehicle -- the choice of which is utilized determined by the factory exhaust valves which are retained. When valves are closed, flow is directed into the Dinan muffler, where absorption and reactive technologies are used, and exit out the two inner tips. This limits noise during low-speed driving and produces a more subdued, albeit deeper, and agreeable note. However, when the valves are open during high-load conditions the bulk of the gases bypass the muffler altogether for a near straight pipe design and maximum aural enjoyment to be achieved. It's the perfect marriage for all tastes and allows civility or impassioned aggression depending on what the situation demands. The combination is one Dinan has deemed fitting for the marques signature performance models that cater to the tasteful enthusiast who demand the best for all situations.

Visually, the Dinan G8x M3/M4 exhaust has been skillfully crafted entirely out of T304 stainless steel and TIG welded for the best visual appearance and color. The entire system is then brush finished to further guarantee an immaculate looking system out of the box. The attention to detail is not limited to parts of the system you can't see once the exhaust is installed but is also extended to the exhaust tips themselves. The Dinan exhaust includes massive, quad 4.5-inch (114mm) clamp-on, double-walled, polished stainless steel and laser engraved exhaust tips. Despite the seemingly cartoonish size on paper, the tips mesh seamlessly and fill the factory cut-outs to complete the OEM+ look with a healthy dose of audible attitude.

Features:

  • Maximum gains of +6 HP and +5 lb-ft of torque
  • Enjoyably louder, sportier sound
  • Drone abatement technologies used to reduce cabin resonance
  • Four, diffuser filling, 4.5-inch (114mm) double-walled, polished stainless steel clamp-on tips with laser engraved Dinan logo
  • Larger diameter piping for increased flow (76mm vs. 70mm)
  • 6-pounds lighter than the stock axle back (Stock: 44-pounds vs. Dinan: 38-pounds)
  • Stock exhaust valve actuators reused, and operation of exhaust valve is unchanged so exhaust tone can be adjusted via the M-drive settings
  • Computer controlled exhaust valves are retained and limit noise during low-speed driving and open fully during high-load conditions
  • 100% 304 Stainless Steel construction
  • Factory-like fitment with included mounting hardware


Shipping Notes
  • Free Standard Shipping on $100+ Orders to the USA.
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  • Delivery to the USA:
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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]
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SKU: 56630425378

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Otis H.
Pawtucket, US
★★★★★ 4
Very nice shirt -Good Quality
Size: XX-Large, Color: Red (Retro Rose)
My husband is 6'1, weighs 178 pounds and normally wears a medium or large. Just for reference his pant size is a 32-34 depending on the brand. We ordered a large due to the fact the shirt appeared to be fitted more at the waist and from looking at the description I knew it would not have much stretch due to the satin type material. I was right. The large fit perfect and hung well. My husband use to be very large in shoulders and arms, but with age he has lost muscle mass, and recently lost a lot in his belly, so usually mediums fit perfect now. But when he put his large on, a medium would not have fit good to be comfortable & give proper fit in stomach area, so glad we went with the large. The shirt was purchased to go on a Virgin Cruise for Scarlett night, and he plans to wear black pants with it as in the picture the company posted, and this shirt will be perfect for that. It is a nice shirt, good quality, and if someone wanted it for an event/cruise or just for a night to dress up, especially for a Caribbean/Spanish or Latin dance theme, this shirt is a perfect look to me. Buy it, you will not be disappointed. He has not worn it yet, not washed it, but I would not put in it with other colors, may fade a little like reds do, and definitely, only dry on low/delicate. May need a pressing/steaming, but overall, it was not horribly wrinkled when we received it. A toss in the dryer may just do the trick. Was delivered on time as it said it would. Hope this info helps you.
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Reviewed in the United States on January 14, 2024
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Avery Hughes
Houston, US
★★★★★ 5
Yeehaw!
I like this shirt. Very fancy yet western.
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Reviewed in the United States on January 20, 2026
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Amazon Customer
Lowell, US
★★★★★ 5
Great quality shirt, comfy, and loved the embroidery!
Size: X-Large, Color: Pure Black (Retro Rose), Size: X-Large, Color: Pure Black (Retro Rose)
Great quality shirt, especially for the price. The embroidery is fantastic. Ordered for a costume party, but is a great shirt for wearing out anytime.
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Reviewed in the United States on January 29, 2026
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Ron
Charlottesville, US
★★★★★ 3
Professionally clean or iron
Size: Medium, Color: Red (Retro Rose)
Looks good and at 5'7" and 145 lbs a medium fit me great. Plan on either professional cleaning or some time at the ironing board to make it look its best. The
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Reviewed in the United States on December 11, 2025
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John Speedy
Houston, US
★★★★★ 5
Quality is great
Size: XX-Large, Color: Black (Retro Rose)
Love it it looks and feels great
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Reviewed in the United States on June 5, 2026

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