stock

Hi everyone. I recently bought a 2017 RC 390 with only 700km on the odo. I was told it was totally stock besides some fork sliders and a tail tidy. However, I've started to notice the exhaust pops on deceleration. I've only owned one bike before so I'm not very mechanically savvy but I did a bit...

We are overstocked on RC390 parts going in to winter. Use coupon code 390Forum on our webstore to save 15% off the entire order, this coupon has excluded products but most 390 parts are applicable. Good for the entire rest of the year so stock up quick before its over!

I was wondering whether to put Motul SAE 10W or Motul SAE 15W in my stock forks. I am 140lbs and wants to make the forks stiffer for racing.

Selling a Mivv Ghibli exhaust which fits 2014-2016 models, may fit later models if you buy an early model header pipe or tyga one, but don't take my word for it. Owned for one year without crashing, selling because it scraped while leaning over at the track last weekend and I don't like that...

Well, I am just about finished with my little project: a 2016 stock RC390 ABS with never-used 2017 wheels, tires, forks, and fairings; and an Akrapovic exhaust. All it lacks now is a $4 rear bally pan bracket, which I have on order. And I'll be replacing the slightly disreputable stock...

In stock at MNNTHBX, the all new Bazzaz tuners for the 17+ KTM 390's. Like first generation, we've seen bigger gains over stock than any single platform we've tuned. Development took longer than it should have, but once again it was worth the wait...

Just recently ordered a new Dominator HP3 exhaust, I've looked around on the forums and I haven't been able to find anything on it. From the pictures on ebay, its a high mounted exhaust, completely getting rid of the stock catalytic converter and silencer. Im hoping i can at least shed a few...

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Hi does anyone know how to get the rc 390 2017 stock header off it get stuck between the engine and frame when I try to remove it surely I don’t have to remove the engine ?

All parts came off a 2015 KTM RC390 that has been converted for track use. Bike was purchased at insurance auction as a theft recovery replaced keyed items and turn signals to get it titled/registered. Selling street or replaced items after conversion. Prices are obo and do not include shipping...

OK folks... at long last and much begging on my part with the Tyga Factory, we finally have a Keyless tank cap for the RC (and Duke) 390's! I expect this will mostly just appeal to racers, but it'll work on the street as well. You can find it here:Formula390 - Parts Cost is ~$56 and I have 6...

I am upgrading master cylinder, brake lines, and brake pads. I was wondering if aftermarket front brake rotor, e.g., Galfer rotor, would further improve braking performance over 320mm stock rotor. I am using the bike only for the track and the stock front brake really sucks. Are there any...

*SOLD* Who wants to send me stock 2015 RC 390 exhaust for a Werkes USA stainless? ***UPDATE*** SOLD, THANKS ALL *** Hey guys, Just picked up this bike and was appalled by the ridiculously loud exhaust it came with :) I see this performance exhaust goes for like $550 online, hoping someone...

Introducing our first designed and developed in house product! The simple and subtle rear tank mount! No its not much and won't make 15% gains like our air tube but it does make life easier. I was tired of having to pull the fuel tank to clean my air filter so I made a fix, this bracket is that...

I think I am going to have some +3 mm pistons made. Available for purchase with gaskets (head/base), head bolts and exhaust gasket. I am trying to source a couple used cylinders now so I can have them bored/plated to size on the shelf. If I cant, you guys will be responsible for having your...

We are finally getting time to play with the new generation dukes. This is with our test mule 2018 390 duke that is completely stock except for an airbox and a Rapid Bike Evo. Its still getting tuned but right now we are liking what we see! Expect to see some serious additions to our website...

To add to the mix, I'm now also producing a Chromoly 4140 Hardened Rockwell 36C front sprocket for the stock 520 chain. These sprockets are hard clear through, not case hardened as most front sprockets are. This means it'll last a LOT longer. Going up to a 16T front is basically about the same...

Ex first gen RC 390 owner. I modded that one with brakes and suspension, tuner etc to get a pretty good lil sport bike. Still, I had a R3 that was bone stock that was just a better street bike, zero mods. Anyway, the local dealer is blowing out 2017 RC/Dukes and the price caught my eye. So...

Just got my hands on a 2015 with 1900miles. Will be tracking this bike so every stock part must go. Seats Signals-TWO SETS OF REAR SIGNALS WITH TIDY TAILA mirrors-SOLD lower fairing-SOLD all the rearsets-ONE SET OF PASSENGER, HAVE THE RIGHT SIDE LEFT kickstand-ONE LEFT stock windscreen...

Has your spark plug boot ever fallen off during a race? Lord knows that ours has! How about have you ever pulled the spark plug out and seen that the boot has been rattling around on the plug leaving a sooty residue? Ours has! After enough rummaging around in our OEM catalog we have found that...