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Description
F80 M3 Downpipes30 Day Money Back Guarantee IN STOCK HIGHLIGHTS Up to +30whp 30wtq Enhanced Exhaust Note 304 Stainless Steel Improved Turbo Spool PROFILE The ARM F80 M3 Downpipes are the ultimate solution for improving power, throttle response, and exhaust note on your S55 powered F80 M3. Our goal for the ARM F80 M3 Downpipes was to provide a solution that would maximize power and torque, fit perfectly, and sound extraordinary. Catless downpipes are considered a
- 30 Day Money-Back Guarantee | IN STOCK
HIGHLIGHTS
• Up to +30whp / 30wtq
• Enhanced Exhaust Note
• 304 Stainless Steel
• Enhanced Exhaust Note
• 304 Stainless Steel
• Improved Turbo Spool
PROFILE
The ARM F80 M3 Downpipes are the ultimate solution for improving power, throttle response, and exhaust note on your S55 powered F80 M3. Our goal for the ARM F80 M3 Downpipes was to provide a solution that would maximize power and torque, fit perfectly, and sound extraordinary.
Catless downpipes are considered a standard upgrade for any F80 M3 owner looking to safely push their S55 engine beyond basic Stage 1 tuning. With Stage 2 and up tuning, higher boost increases back-pressure at the OEM catalysts and chokes the S55's turbochargers, causing them to work harder and shortening their life.
The ARM F80 M3 Downpipes relieve the stressful back-pressure caused by high-boost tunes, allowing the exhaust to flow freely, increasing power and torque, all while extending the longevity of your S55's turbochargers. On our test car, after installing our F80 downpipes and switching to a Stage 2 flash we made 543whp and 547wtq, this is 73whp and 126wtq gain over the stock results!
Even with the Resonated ARM F80 M3 Downpipes installed on your stock-tune S55, you will notice an increase in power, torque and responsiveness. Not to mention the incredible, head-turning sounds your M3 will make under part and full throttle.
RUMBLE, NOT RASP.
The ARM Resonated S55 Downpipes give your F80 M3 an unparalleled sound that even other F80 owners will notice. The deep, aggressive tone of the ARM F80 M3 Resonated Downpipes will stand out next to the all too familiar high-pitched rasp of other catless downpipes. Our 4" resonators are installed in the perfect location to enhance the sound of your S55 without compromising the precise fitment of our F80 M3 downpipes.
Alternatively you can opt for the catted version which replaces the resonators on each downpipe with a 200 cell catalysts to help reduce emissions.
Alternatively you can opt for the catted version which replaces the resonators on each downpipe with a 200 cell catalysts to help reduce emissions.
CONSTRUCTION
Precision CNC machined v-band flanges offer a smooth transition of exhaust gasses from the the turbochargers to the ARM S55 Downpipes. The body of the 3" ARM F80 M3 Downpipes are constructed of SS304 Stainless-Steel and are threaded smoothly and perfectly though the space given by BMW towards the mid-pipe section.
Any downpipes that bolt up directly to the OEM mid-pipes must reduce to the 2.5" to meet the size of the OEM mid-pipes. Some aftermarket downpipes use an abrupt, short reducer which causes turbulence in the exhaust gasses. The ARM F80 M3 Downpipes feature a smooth, gradual transition from the 3" inlet to the 2.5" exit for optimum exhaust flow.
The ARM F80 M3 Downpipes are a massive improvement over the OEM S55 downpipes, with precise fitment and brilliant finish the ARM S55 Resonated Downpipes are the perfect solution for your S55 project. Our goal for the ARM F80 M3 Downpipes was to provide a solution that would maximize power/torque, fit perfectly, and sound uniquely extraordinary. We are so confident that you'll agree we've achieved this, we back every set of our ARM F80 M3 Resonated Downpipes with a 30 Day Money-Back Guarantee and the ARM Lifetime Free-Replacement Warranty.
IN THE BOX
• ARM F80 M3 Resonated Downpipes
• CNC Machined Bracket for Front-Turbo Downpipe
• 4x Downpipe to Mid-Pipe Bolts/Nuts
• CNC Machined Bracket for Front-Turbo Downpipe
• 4x Downpipe to Mid-Pipe Bolts/Nuts
• ARM Lifetime Replacement Warranty
FITMENT GUIDE
| Make | Model | Submodel | Engine |
|---|---|---|---|
| BMW | F80 | M3 | S55 3.0L |
| BMW | F82 | M4 | S55 3.0L |
| BMW | F83 | M4 | S55 3.0L |
| BMW | F87 | M2 Competition | S55 3.0L |
ARM MOTORSPORTS LIFETIME WARRANTY
Every ARM Motorsports product is backed by a lifetime warranty which is automatically issued at the time of purchase. Your warranty protects you against any defects in craftsmanship or fitment. The warranty entitles you to a replacement unit.
This product is for Off-Road Use Only. Items sold for off-road use only are illegal to use on public roads in most states and provinces. This product is intended for racing vehicles which may never be used on a public road.
This product is for Off-Road Use Only. Items sold for off-road use only are illegal to use on public roads in most states and provinces. This product is intended for racing vehicles which may never be used on a public road.
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
4.4 ★★★★★
Based on 13 reviews
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Product Reviews
★★★★★ 5
Jack’s review
Color: Black, Size: 36W x 30L
Very nice pants I like the last thing in the sides of them they fit great
WAS THIS REVIEW HELPFUL?YesReportShare
Reviewed in the United States on April 5, 2026
★★★★★ 5
Nice jacket at a much better price for one night!
Color: Christmas Green, Size: Large, Color: Christmas Green, Size: Large
We were quite amazed with the fit and quality of this jacket. It was used for one night of prom and looked great! Each of my son's closest friends wore different colors of the same jacket and they all looked great and coordinated with their dates!
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Reviewed in the United States on May 30, 2026
★★★★★ 5
Sophisticated
Color: Wine Red, Size: Large
This blazer exceeded my expectations! The floral paisley design looks stylish and elegant without being over the top. The fit was true to size, and the shawl lapel gives it a classy, high-end look. The fabric is thick, but the texture of it is soft. I wore it to a formal event and received tons of compliments all night. Great choice for prom, weddings, or dinner parties at an affordable price.
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Reviewed in the United States on May 26, 2026
★★★★★ 5
Wonderful evening wear look
Color: Beige, Size: X-Large
Good quality, true to size, fits well, looks great, never fails to garner compliments.
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Reviewed in the United States on May 31, 2026
★★★★★ 4
Sized Up, Still great!
My son typically requires a 3x TALL, so I sized up one (4x) but had it gone to a 5x that might have been even better. For reference he is 6 foot tall, 300 lbs, and very broad shouldered (think lineman 🤣) However, the quality and print were so great! He opted for a chain instead of the bowtie because he did a bow tie last year, but that was decent as well. For the price, this is a GREAT buy.
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Reviewed in the United States on May 4, 2026