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Arrow - 790/890/901 Adventure - Racing Mid Pipe

$267.00 $240.03
(You save $26.97)

Product Description


The Arrow De Cat mid pipe eliminates the heavy and heat soaked catalytic converter and resonator chamber for a 'true through' performance upgrade for the KTM 790 Adventure. This mid-pipe will fit all stock configurations both at the stock collector and muffler joints. What this means is that any muffler that will fit the stock mid-pipe will fit the Arrow Racing mid-pipe, as well as the attachment points, are exactly the same as stock. No cutting or modification required as this is a bolt-on product. 

  • Stainless Construction
  • Built in packing core 
  • Bolt on product
  • Increases DB levels


  • KTM 790/890 Adventure 
  • HQV 901 Norden 

Product Videos

790 Adv Arrow Muffler + Arrow Decat Midpipe Sound Check 02:09

Decibel test of a KTM 790 Adventure with an Arrow muffler and an Arrow de-cat mid-pipe at varying RPM's under a 15% dynamometer brake load. 790 Adventure Arrow Muffler: http: 790 Adventure Arrow De-cat Mid-pipe: 790 Adventure Mapping Options: NOTE: This video is designed as a direct comparison to other videos we produce in the same environment and not intended as a direct decibel result of any kind. The DB meter will also pick up some noise from the dynamometer drum, drivetrain, and tire spinning. In order to offer the most accurate sound under load, these are the compromises. PS: Please don't give this video a thumbs down just because you don't like loud exhausts. We are just showing you stuff. :)

  • 790 Adv Arrow ...
    Decibel test of a KTM 790 Adventure with an Arrow muffler and ...

Product Reviews

Write Review

  1. nice replacement for the cat 5 Star Review

    Posted by on 25th Jul 2022

    Good quality part. Installed well. No fit problems. Would definitely recommend this mid pipe. Gave bike nice sound. I was afraid it would be too loud but it’s just right. Did a 200 mile ride. No performance loss noted. No trouble lights on.

  2. 890R Decat. ARROW Sounds good and works GREAT 5 Star Review

    Posted by on 25th Jun 2022

    Just installed the Mid Pipe from Arrow. All the instruction were right on. Fit was prefect. Was worried it would be to loud. With stock can But its just right, also power delivery was right.

  3. Cat pipe for 901 5 Star Review

    Posted by on 10th Jun 2022

    In short . The cat delete pipe fit perfect on a Norden 901, And it sounds So much better. Not loud at all . I Love it ..

  4. Great improvement 5 Star Review

    Posted by on 30th Apr 2022

    Well-made part, step by step instructions were very clear. Re-using OEM exhaust gasket was a bit of a task but worked. Modestly louder with stock can but wife hasn't even noticed yet! Bike runs great including idle with not additional adjustments

  5. Easy Install, Better Sound, Less Heat 5 Star Review

    Posted by on 12th Mar 2022

    The worst part is getting the cat out, but once that is done the rest is simple.

  6. Must have 5 Star Review

    Posted by on 6th Mar 2022

    Ok, I had no idea mid pipe will make such a huge change in sound and performance but it did. Its a must have combined with Arrow slip on, bike now sounds like a proper twin.

  7. great quality; awesome sound 5 Star Review

    Posted by on 24th Feb 2022

    Looking to reduce heat, lower weight and improve sound. Solid part!

    Install was straight forward.

  8. thumper 4 Star Review

    Posted by on 6th Feb 2022

    noticeable growl

  9. Weight savings KTM 890r 4 Star Review

    Posted by on 4th Feb 2022

    Biggest reason I had for installing the Arrow Decat is weight savings. Secondly I felt the bike was too quiet. I like to hear what's going on for shifting, clutching etc...This product is a good 4 pounds lighter than stock and really wakes up the exhaust tone. Seems to have moved power more into lower part of the powerband. Good for offroad. Good quality and not a bad install. I opted for this more expensive decat in hopes of retaining stock performance as it has some back pressure so won't lean out the fuel mixture beyond the bikes ability to compensate. So far so good.

  10. don't think get it 5 Star Review

    Posted by on 23rd Jan 2022

    You will feel the power in low mid rpm and sound not crazy at all 5 out 5

  11. Arrow mid pipe- cat replacement 5 Star Review

    Posted by on 30th Oct 2021

    Hi All, if you’re thinking of upgrading the 890 exhaust - this is the way to go. The Italians knocked this one out of the park.
    The performance and sound are incredible- not to mention dropping some weight.
    Well worth the money and time-
    Ciao, Brett

  12. Love it! 5 Star Review

    Posted by on 15th Oct 2021

    I just installed my Arrow midpipe on my 890 Adventure R. When I got the original Cat out, I was amazed at the weight difference between the two. It feels like it runs a bit cooler, has a bit more power, and sounds great with my Akrapovic exhaust l

  13. The heat is gone... 4 Star Review

    Posted by on 21st Sep 2021

    Good product quality, durable, holds up well in the dirt, water crossings etc. Loud with stock exhaust. Mellow delivery of power, no maintenance lights. Best part, lighter, open area to let dirt and debris fall through, no leaf fires under my seat and the excessive heat is gone.

  14. Much better sound, easy installation. 5 Star Review

    Posted by on 2nd Sep 2021

    The mid pipe took about one hour to install without seeing any instructional video. It fit perfectly. There was a slight weight reduction and a deeper, sharper sound to the exhaust.

  15. Lost some weight, cooler feet and more noise! 5 Star Review

    Posted by on 26th Aug 2021

    I've had an Arrow Titanium Muffler for a while and finally got the Arrow Decat.
    The arrow decat is 3.5lbs lighter than the catalytic converter. I've noticed a decrease in heat around my feet.
    Install was easy other than when I went to put my skidplate back on it hit the header to decat clamp so I had to clock that differently, no big deal.
    Slight increase in noise but not annoyingly so.

  16. Lost some midrange 4 Star Review

    Posted by on 9th Aug 2021

    I had the Arrow titanium muffler and Rottweiler intake system on my 790R, which provided amazing results, once I installed the Arrow mid pipe the motor felt softer and didn’t have quite the punch as before. Thinking I might need the mapping adjusted or may go back to the stock cat.

  17. throaty!!! 5 Star Review

    Posted by on 23rd May 2021

    Rottweiler as usual is great. Pipe was back ordered and only a few days past their expected dates.
    Install, bout 1 1/2 hrs , not hard or challenging at all. Needed to drop pan and pull foot pegs off. All are simple.
    The weight difference is noted. The heat difference is amazing!!! The sound yum ! I’m still running stock pipe I don’t plan on upgrading that as I love the sound now. And I’m sure I’ll dent this one up anyways on the trails
    Also installed kick stand bypass concurrently as you are already there. Also purchased from Rott.
    Thanks gang.

  18. Arrow Decat 5 Star Review

    Posted by on 9th Apr 2021

    I pondered the decat concept for a long while, as there are so many 'cheap' options. After watching the dyno results and seeing the disappointment on faces of 790 owners who opted cheap, I ordered the Arrow from Will at Rottweiler. Sound is awesome, with no loss to low or mid range. The Arrow decat mimics the stock cat, and just fits easily and when you fire the bike up you really notice the distinct sound. Thank you again Chris, Will and Jessica D. My 890 Rally sounds like a dream.

  19. great product 5 Star Review

    Posted by on 21st Feb 2021

    Fits up nice and replaces cat.

  20. Arrow Cat Delete mid pipe 5 Star Review

    Posted by on 12th Dec 2020

    Step by step directions were perfect and easy to use, pipe fit perfectly, sounds good, not to much louder than stock, just a nice thumper sound.

  21. Love the decat pipe from Arrow 5 Star Review

    Posted by on 12th Jun 2020

    Fits well, easy to install once you remove the stock cat. Sound with stock muffler is just about right. Bike is still pretty quiet while warming up and mild riding....which is what I as looking for.

Shipping Weight:
5.00 LBS
Calculated at checkout