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​AR DESIGN partner up with REMUS and BMS for combo deals!

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Order Link: https://www.x-ph.com/jb4-ar-design-downpipes-combo-deal-m3-m4/

BMS JB4 Stage 2 S55 is the best tune on the market for your M3 / M4 no matter what type of performance you seek out of your car. The S55 JB4 stage is compatible with fully stock cars and heavily modified cars as well.

Burger Tuning S55 JB4 stage 2 installs and uninstalls in the matter of 45 minutes. BMS Stage 2 Jb4 offers code reading and deleting, boost limit for first and second gear, 7 preset maps for different modifications and fuel quality, full E85 support and full E85 support!!!

It is now offered in an all new weather proof aluminum enclosure to ensure the extra protection. The Stage 2 JB4 S55 tune is also offered with OBD cables for an untraceable install and added features including gauge hijack.

Enough about the JB4, its time to talk about the Hi-Flow 3" Catless DP.


  • Typical gains WITHOUT tuning in the 25-30whp range!
  • 100% hand crafted in the USA from premium 304 Stainless Steel - flanges and O2 bungs included!
  • CNC'd 304 Stainless cat-back flanges, and CNC'd 304 Stainless V-Band flanges.
  • 100% TIG welded, argon back-purged.
  • Grade 10.9 Metric Hardware (145,000PSI tensile strength, C32-C39 Rockwell, Zinc Plated), and Nord-Lock positive locking re-usable washers included.
  • Factory location O2 bungs
  • Available with a 2000°F ceramic coating. Coatings come with a 3 year warranty against corrosion and rust to original owner.
  • Lifetime warranty against any manufacturing defects given to original owner.

We do NOT grind/polish our welds as some other manufacturers do. Grinding welds compromises the strength of the weld, and can lead to weld failure! Especially critical in applications exposed to temperatures in excess of 1200°F. Such temperatures will also rapidly deteriorate the polished finish.


Order Link: https://www.x-ph.com/ar-design-res-catted-downpipes-remus-non-res-catback/

Are you looking for a cleaner sound and no drone in your downpipes? Of course you are! Well, the AR Design BMW M3 / M4 catless downpipes with resonators. These DP will include the advantages you get from a catless downpipe including maximum air flow, aggressive sounds, and adds to it the more refined tone you get from a catted version.

For a quieter sound, AR have added the option for a catted downpipe. With the AR design catted downpipe you will still get to keep 100% of the performance you get from a catless DP.

As for the REMUS Exhaust:

  • Aggressive racing sound
  • Shot blasted surface
  • 100% stainless steel
  • Performance increase
  • low back pressure
  • Light weight construction
  • Perfect shape and fitment
  • Handmade in Austria
  • 36 months warranty

Extreme Powerhouse now features AR Design combo deals. Make sure to check them out for amazing prices!!!


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