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  1. Jerchiz

    2014 rc390 race exhaust questions

    New to the Forum here. I have a 2014 RC390 that I plan on building into a track bike so I got lots of questions. First thing is exhaust system. I do have a 2021 Arrow indy race slip on that I was using on my 390adv. I'm thinking of welding up a stainless exhaust system and using that arrow...
  2. B

    Arrow mid pipe question

    I’m looking for a new mid pipe for my rc cup bike. I want to get rid of the cat/mid pipe since it’s bent. I’ve been looking for a new mid pipe and came across an arrow one. I wanna know if I’d be ok with the stock header, arrow mid pipe and akra can or should I look for a different setup? And...
  3. U

    Tyga Carbon Street Cup Seat and Arrow Slip-on (‘17-‘19) - new

    These two items are in their original boxes, which were never opened. Prices include freight(CONUS), PayPal only. Tyga carbon fiber - Street - cup style seat cowling - $325.00 Seat Cowling Set, Street, (Carbon), Cup Style, KTM RC125, RC200. RC250, RC390 | TYGA-Performance Arrow GP2...
  4. P

    Can anyone verify if this arrow exhaust is fake?

    Can anyone verify if this arrow exhaust is fake? i havent seen it anywhere and they are selling it for $400
  5. T

    rc 390

    we have just got a rc 390 and have a full arrow system for it ! i am wondering is it ok to put full system on without dyno/ecu work ??
  6. HardRacing

    Rc390 arrow midpipe - anyone want it ?

    . We have a customer who accidently, ordered an RC390 Arrow Mid-pipe. a.k.a. ( ARROW NON CATALYZED CENTRAL LINK PIPE STAINLESS STEEL Just trying to help him get sell it. Anyone interested in this ? please post or Pm us. ? .
  7. L

    New Arrow GP2 Exhaust - Questions

    Hello Friends, Im am owner of the 2016 RC390 with the new exhaust on the side. I want to have an aftermarket exhaust. Arrow has the GP2 for the new Euro 4 Model, but the DB Killer is not removable. Does anybody has this exhaust? Maybe someone can put some more pictures of it in here. And the...
  8. Superpacman13

    Arrow Street Thunder Ti and Akra Hanger $450

    Used Arrow Street Thunder Ti with link pipe and Akra hanger. $450 obo.
  9. cornerslider

    Help me understand "Flashing" an ECU?

    I've decided to swallow my pride, and just ask what might be perceived as a "dumb question"..... What is "flashing" an ECU, and what does it do? I used to have a Husqvarna SMR450R that I replaced the stock ECU with the "race" ECU matched to the Arrow dual exhaust I had on it. I honestly don't...
  10. Child

    Exhaust decisions.

    Ummming and arhhhing over what exhaust to get. Loving the under belly look but a bit worried about the noise levels on the Werkes USA. I would consider something like an Arrow X Kone but I've taken off the rear pegs and haven't seen one mounted without those pegs. Is it possible? May be doctor a...
  11. W

    PCV Installed Now Backfiring

    Need some help. I installed my Arrow GP exhaust and PCV, and I'm running the stock air filter. The PCV has the Arrow fuel map installed. When I decelerate, I'm getting backfiring. Is this normal? Is the bike running too lean? Too rich? Any help/suggestions would be appreciated. Gary
  12. W

    Dyno Questions

    So I received my Arrow GP exhaust and PCV last week. The PCV came with the Arrow Fuel Map installed. My questions are: 1. Should I get the bike on the dyno prior to installing everything to get a baseline? Is it a waste of money? 2. Does the tuner need the dyno baseline data to tune the...
  13. W

    Arrow GP2 db levels

    Has anyone who has a Arrow GP2 exhaust installed measured the db levels? I'm ready to get a different exhaust, and the Arrow is one of my choices. But the track I like to go to has a 102db restriction, so I'm trying to comply with that. I've searched the forum, but didn't see any threads...
  14. Manbeard

    My bike needs the fueling mapped. Power commander or Powertronic(or something?)?

    Hey guys, So my RC had it's first service done. I had already fitted an Arrow exhaust and asked my dealer to fit the K&N filter and add a better mapping. When buying the bike they told me they even had a rolling road(dyno) so could provide tuning of the bike as well. When I asked him if he...
  15. emeglasson

    Arrow GP2 stainless dark exhaust installed

    My Arrow pipe arrived today, so naturally I installed it tonight. I ordered it from an ebay seller called acrmedics, I paid about $540. He was very helpful and communicative; seems like a good guy. It seemed like a good option relative to the Akro system. I have had Arrow pipes on other...
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