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Description
BMW S55 Downpipe For F80 M3, F82/F83 M4, F87 M2 - ARM MotorsportsHIGHLIGHTS Up to +30whp 30wtq Enhanced Exhaust Note 304 Stainless Steel Improved Turbo Spool Best Sounding M4 Exhaust Setup 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
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 539whp/544wtq, this is 68whp and a massive 127wtq gain over just the Stage 1 flash!
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.
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 |
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
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
4.1 ★★★★★
Based on 30 reviews
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Product Reviews
★★★★★ 5
Good purchase
Good price, not bad quality.
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Reviewed in the United States on May 8, 2026
★★★★★ 5
Solid Choice for Everyday Use
Would definitely order again when I run out. Sometimes the basics done well beat the alternatives trying too hard to be special. If you're looking for dependable napkins that won't let you down during dinner or cleanup time, these deliver. No fancy features, no gimmicks - just straightforward functionality at a fair price.
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Reviewed in the United States on April 15, 2026
★★★★★ 5
Good value, good product
These are fine for the money. Absorbent, strong enough. Good value, will re-order these.
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Reviewed in the United States on May 16, 2026
★★★★★ 5
Simple, Durable, and a Great Pantry Staple
I bought these because they were inexpensive, and they turned out to be exactly what I expected in a good way.
They’re durable, have the size and softness of a standard everyday napkin, and the absorbency is solid for normal meals and spills.
The pack is a good size—it fits easily in my pantry but still holds a lot of napkins, so it lasts a long time before needing to restock.
If you’re just looking for simple, reliable napkins at a great price, these are a really good value.
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Reviewed in the United States on March 12, 2026
★★★★★ 4
Good Value Napkins for Everyday Use
These napkins are a good everyday option. The size is large, they’re affordable, and the quality is good for the price. I like that they have a textured surface, which makes them more useful than plain napkins.
They are a bit thin, so I didn’t give 5 stars, but for daily meals and regular use, they work great. Overall, a solid and budget-friendly product.
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Reviewed in the United States on January 21, 2026
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