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  1. #1
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    ar design - 4" N55 Hi-Flo Downpipe 100% Bolt-on MADE IN USA!

    ar design 135i / 335i / 335xi 4" Hi-Flo™ Catless Downpipe (N55, 2011-)

    Order here: Click!

    We are thilled to present our new 135i / 335i / 335xi 4" Hi-Flo™ Catless downpipe for the BMW N55 engine! The only 4" downpipe currently on the market! In addition to an intoxicating and exotic sound, these downpipes add significant power and virtually eliminate turbo lag!

    Our Hi-Flo™ 4" Catless Downpipes Feature:

    * The only 4" Catless downpipe currently on the market! Built with a carefully made 4" to dual 2.5" collector that mates to the factory style exhaust.
    * Typical gains with tuning in the 20+hp range!
    * 100% hand crafted in the USA from premium 304 Stainless Steel - flanges and O2 bungs included!
    * Water-jet cut 304 Stainless cat-back flanges, and CNC'd 304 Stainless V-Band flange.
    * 100% TIG welded, argon back-purged.
    * Set of our exclusive bomb-proof exhaust gaskets included.
    * 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, with an added bung for a wideband O2 sensor!
    * Available with a 2000F 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 1200F. Such temperatures will also rapidly deteriorate the polished finish.

    Click here to enlarge
    Click here to enlarge

    We have plenty in stock and ready to ship to your door!!!

  2. #2
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    It's beautiful, simply beautiful.

  3. #3
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    Plenty of these in stock and ready to ship out!

  4. #4
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    Good morning bump

  5. #5
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    Bump!

  6. #6
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    Bump!

  7. #7
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    Bump for the only 4" N55 Downpipe!

  8. #8
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    Bump!

  9. #9
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    Bump!

  10. #10
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    Bump!

  11. #11
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    Go FAST tuesday BUMP!

  12. #12
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    Every Thursday I be bumpin!

  13. #13
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    Tuesday Bump for some awesome welding!

  14. #14
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    Moved to N55 section.

  15. #15
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    Would be nice if there was a catted version for the F10/E70 platform... Only the E90 gets love... Click here to enlarge Bump for an Awesome product though, none the less
    2013 Dodge Challenger R/T: CAI, Catch Can, Shorty Headers, Custom Exhuast, M.M. 87mm Throttle Body, DiabloToona Custom 93 Oct Tune, 190* Thermostat, Seibon CF Grille, 6.4 CAM, Inertia M.S Ported Cylinder Heads
    Pending Mods: T/A Hood, S/C

    2011 X5 35i Premium: Black Grille, Boopie Custom 3" Dual Exhaust & Custom N55 FMIC, JB3 (+3psi)

  16. #16
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    Case of the mondays bump!

  17. #17
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    Bump for in stock and ready to go! Also got a super sale on resonated sets a couple left at amazing price! PM me for details!

  18. #18
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    hump day bump!

  19. #19
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    Nice design!

  20. #20
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    Click here to enlarge Originally Posted by JAWS Motorsport Click here to enlarge
    Nice design!
    Thanks!!!

  21. #21
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    bump for the best n55 pipes on the market.

  22. #22
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    1 out of 1 members liked this post. Reputation: Yes | No
    Who wants a free downpipe! Check out the Facebook contest going on now! http://www.facebook.com/ardesign.inf...55558194495800

  23. #23
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    Click here to enlarge Originally Posted by Kai @ AR Design Click here to enlarge
    Who wants a free downpipe! Check out the Facebook contest going on now! http://www.facebook.com/ardesign.inf...55558194495800
    http://www.germanboost.com/showthrea...772#post318772

  24. #24
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    Bump for downpipe giveaway!

  25. #25
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    contest and voting is off and running!

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