intake

  1. R

    Upgrading intake and installing PCV

    This is my first post! For the next track season I am considering upgrading my RC 390 by installing a free flow exhaust and a high flow air intake, completing the upgrade by installing a PCV and getting a custom map om the dyno. This is my current plan: Exhaust: -Install a cat delete pipe in...
  2. J

    WTB duke 390 full exhaust, rapid bike evo, and modified intake

    Interested in mid/cat delete and slip on combos but I'd really like to get the earlier Akropovic Race line slip on with the early tyga header. Also in the market for a rapid bike evo and modified intake. Houston, TX area but I go to Dallas, San Antonio, and Austin
  3. D

    Valve clearance

    Hello, I would appreciate some input from more experienced members here. I had check the valve clearances and I found that all four valves are out of specs and pretty tight. Both intake valves were only 0.04mm and both exhaust valves were 0.08mm. Now since the dealer has shims that are...
  4. Superpacman13

    Black Friday sales start now!

    Our black friday week of sales is on now! Use the code 390racer to get your discount. This special pricing only applies to select items such as our intake box or 690 big bore kit. Dig around and see if what is on sale suits you! Sale ends 11-24-2018 with no exceptions.
  5. Falkon45

    Ignition coil upgrades

    So, I'm asking, because I just saw what the coil looks like. Has anyone ever upgraded these so something like an MSD coil, or swapped to coil on plug? I'm asking, because that's typically where I start looking for more bumps in power after intake, exhaust, and spark plugs on my cars. It's a...
  6. Superpacman13

    Custom intake runners available now!

    KTM has finally released their HOMOLOGATED intake runner for the RC390! This little monster will typically net you a 20% gain in top end horsepower, right where you want it for race use! These modifications were all done with a closed air box lid. If running an open lid and performance exhaust...
  7. M

    Retard cam

    As I'm usually riding my bike mostly from 7,000 to 10,000 rpm in all gears, and my peak TQ is 3.6 kg-m at 7,060 rpm, I'm thinking of moving the power band highier. Anyway, I have planned to regrind my cam but before I do so would like to try this out to see what I can get. My plan is to retard...
  8. Superpacman13

    Intake testing 2-12-18

    We got to play on the dyno and test various intake lengths. It seems there is plenty to gain for the bikes that run at high RPM! https://ibb.co/e211O7
  9. Superpacman13

    Gray Area KTM

    Hello, we are Gray Area KTM a racing focused KTM dealer out of the beautiful Springfield, Oregon. We are proud to say that we have some of the fastest racers in the Pacific Northwest on the dirt and street. Our products and ideas are all race and dyno tested for dirt and street. Please forgive...
  10. nino209

    Something else to keep an eye out when checking valves

    my bike is 2015 cup bike I got it new in 2015, it has about 15 sprint races on it and a probably about 10 track days, i check valves religiously and oil changes are done after every outing, the one thing i have never bother to check is the cam sprocket bolts, well the intake bolt decided to back...
  11. O

    Airbox lid mod + PC5

    I added a PC5 and proceeded to remove the lid from the air box cover. Damn, thats loud now. So, figured i could snuff that intake while still giving it enough air and tried this. Works for me, bike still feels great and the nasty intake roar is gone. i choped out the rear facing panel, leaving...
  12. Drak

    It is Amazing

    This is what i took out of my Rc390 One stock KTM air intake. Witch i will note is one of the worst air intake systems i have ever seen. Pulling air from the back of the bike all the way to the front. And replaced it with a K&N Rc 9630. I used a 2.25 to 2.5 reducer to go from the intake to the...
  13. M

    MIVV RC 390 exhaust IN STOCK

    We've been testing on the Duke for some time, but have been patiently waiting on the RC variant, and they've now arrived. We continue to be impressed with MIVV. Fantastic Italian design and build quality. The include great db killers to tailor sound levels, and have proven to build power. Below...
  14. H

    Has anyone tried using a clamp mounted air filter on the intake?

    I was wondering if anyone has tried to use a clamp mounted air filter (attaches directly to engine intake) on the RC and ditch the airbox and its accompanied parts. The engine intake angle seems higher up and in a better location than on a carburated bike and makes it seem more feasible to use a...
  15. DCmetro

    Exhaust, intake, ....

    Hey everyone, I'm new to the site. I just recently got a RC390 and I'm looking to upgrade and I would like your advice!! 1. Muffler - I want the traditional look so am thinking the GPR Ghost is the way to go? 2. Intake - K&M intake? 3. Ecu - Power Commander? Is this a good mix? I'm new to...
  16. S

    Modifying the stock intake tract for more power (cleaner air)

    So currently, the intake track sits like this : It "sucks" in air from underneath the rear seat. Not a lot of clean space there or an open air to draw air in. I'm thinking about modifying it to suck in air from underneath the bike...something like this: To do that, you'd have to cut an...
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