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My 2016 rc390 was having strange idle issues. It would run at 2500rpm, then surge to 4000 for a few moments, then go back to 2500. Over and over. At higher RPMs the variation seemed to diminish. I remembered that I may have not properly reconnected the air hose at the back of the air box...

25,000mi on my 2016 rc390. The bracket that hangs the bodywork from the bottom of the stock exhaust has been rusted and the bolts have been loose for a while. I am unable to tighten one bolt because what I assume to be the nut inside of the exhaust has broken loose and so it has nothing to...

My turn signal swithc broke after 24,000 miles and 3 years. That's not a very long time for part to last. From what I can see, KTM doesnt sell the switch itself separate from the entire cluster. Do I have to spend $40 now because of this asshole little part? Does anyone know a way to get a hand...

23,000mi on 2016 rc390. Haven't ridden it much this year because riding an sv650 more frequently. Noticed the past several months that the clutch feels light and seems to have a narrower friction zone than I remembered it having in previous years. Wondering if clutch plates are worn since I tend...

20k+ miles on my 2016 rc390, bodywork is pristine from a distance but cracked and sheared in many locations at connectors: L and R fairings sheared off where they meet the front of the windscreen (thanks dealer), rubber peg where the lower L+R fairings meet the belly pan are totally cracked off...

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I've gotten the LOW BATTERY warning several times recently; I trickled charged with Battery Tender Junior until green light indicated full charge; low batt warning gone, all good. However recently, I fully charged it after the warning came on, and now it's already back to low battery warning...

This is probably not a problem specific to the rc390, but this is my first bike and I could use an opinion diagnosing a problem I've been having this past week: Bike experiences irregular bumpiness / chunkiness on all road conditions at almost any speed. Can't tell if this problem has always...

Lost my California DMV Registration Card - need to get a replacement. Form requires ENGINE NUMBER in addition to license and VIN. According to the shop manual, the engine number is buried on this bike underneath the engine sprocket. Is there any other way to find the engine number besides...

Occasionally, when under hard acceleration, either because I am working the controls too quickly or something is wrong mechanically, the bike will go "in between" gears 5 and 6, showing a blank spot on the LCD where the gear indicator number is - when I release the clutch, the engine revs like...

Having trouble finding a clear answer on this from searching the forum and looking through the owner's manual. One of the side cover screws - the lowest one, on the white part of the fairing, with a black, beveled washer - has disappeared. The manual has a list of every screw and its torque...

I've had three instances of this happening to me now: 900mi on the Odometer after riding about 150 miles: engine light comes on solid during a ride. Pulled over, turn engine off, turn back on again, engine light still on but no blink code. (this is with side stand up, ready to ride, by the...

Hi all, I know this is a topic that has been beaten to death on this forum, but I can't find the answer to this particular question. I did my first oil change recently. I had a bottle of Motorex 15W-50 4T Semi Synthetic at home weeks before my oil change, and when I went into the shop for an...

I crashed my RC at Thunder Hill in California last weekend making a rookie mistake. M body position wasn't great and I was leaning the bike over too much. When my foot peg scraped the ground, I got scared and overreacted by standing the bike up. I both wheels slid and before I knew it I was on...

I'm getting deeper into the rc390 and want to be smart about buying the right tools to be able to service my bike by myself, at least easy to medium difficulty jobs. If my engine blows its gasket, I'll take it into the shop. I don't yet own the RC 390 shop manual so forgive me if the information...

Relatively new rider here, which means I am also an inexperienced mechanic. 5 months of riding and 3500 mi on my rc390. After about a month of riding, my front brake became very squeaky and squealy, particular when coming to a stop around the 15mph to 0mph range. I looked into it and bought CRC...

Hi everyone, first post. I searched for "Bent Brake Lever" and found this thread from last year. It seems like it's best to simply buy a new rear brake lever when it gets bent. I figured I'd write a new thread now to see if anyone else has had this experience and what the best fix is...

Hi everyone, first post. I searched for "Bent Brake Lever" and found this thread from last year. It seems like it's best to simply buy a new rear brake lever when it gets bent. I figured I'd write a new thread now to see if anyone else has had this experience and what the best fix is...