issues

So Ive had my RC 390 four roughly 5 months and I cased a pothole roughly a month ago, bought new rims and tires, as well as new abs disks and replaced the rear stuff, everything was great, few weeks later replaced the front and now my bike has a plethora of problems suddenly, speedometer reads...

Hi, I'm new to riding and on a search for a good 300 series bike. I am currently looking into the R3 used and have the chance to pick up a 2017 RC 390 from a friend of mine . His bike has about 275 miles on it. My concern is reading about all the issues these bikes have and wondering...

Hey! Couldn't find a thread with my issue, as its slightly different from all the other "engine cuts out" threads. I recently blew my head gasket at a track day, so pulled my motor to change it and do my valve clearances all in one go. I had some issues getting the oil scraper ring back in the...

Has any ran into a very tight fitting tyga header on a 17’. The O2 sensor has clearance issues with the exhaust stud and I can’t get the nut on. If I install the header first I can’t get the O2 sensor threaded because it hits. And it hits the frame too. Anyone seen this or have any...

Has any ran into a very tight fitting tyga header on a 17’. The O2 sensor has clearance issues with the exhaust stud and I can’t get the nut on. If I install the header first I can’t get the O2 sensor threaded because it hits. Anyone seen this or have any suggestions? Thanks

lets see who has the most miles ...... also note around what miles you had failures and what type of failures..... ill start 2017 7500 miles no issues

So ive had this 390 for a little bit. and im starting to get some annoying issues. My bike has 3000 miles. First the gear shift lever fell off. Recently my kick stand bolt backed out and had to get bolts from ace hardware. Is there something im missing with this bike that bolts keep rattling...

Hey so I don't normally post and I know this could/should go in the technical forum, but I think this one is important. Many of you have notice by now that the RC390 is not, actually, Ready-To-Race. In fact it's not even ready for particularly hot weather. There are three problems that I had...

Hey guys, i picked up a great deal on an AT-200 and installed it last week. at the track today its throwing 9.99 AFR which means there is an sensor issue or its installed wrong. good times! lol. Anyone else running one of these? any issues? - the install does not say to do anything with the...

2018 RC390 is having some stalling issues in two circumstances. I understand this to be a common problem, but there are no resolutions (apart from one I've listed below) OR people just forget to reply with their resolution. Brand new bike, less than 100 miles. Two separate issues: 1...

Just wondered, would this be a worthwhile topic? I am interested in getting some feedback from owners who are; A. Happy with their RC390 B. Ok with it's reliability, given the usual caveats of operator error (which apparently is NEVER a thing), being used as a race bike or street bike, or...

I'm sure this has been covered, but I'm having some clearance issues on my 390. I put BST wheels on and they are great. Good for 2 seconds. The only problem is now I'm starting to drag the right side T-Rex case cover and the back edge of the belly pan. I'm going to swap out the case cover...

Out on track today at Cadwell Park! Positives ... the Samco hoses, Motul coolant and AS3 Performance rad cap worked to keep temperature down. Also new set of Pirelli DRIIs on working better than last time out on the Metzelers. ☺ Downside ... two days prior to going the paddock stand collapsed...

New to KTM, not to motorcycles. Here for advice on the first things I need to do to avoid or prolong the gasket issues known to the 2016 RC390. A list of saves would be helpful.

(2015 RC390) I’m so fed up with this bike right now!! I don’t have money to continually dump into this thing to make it run or run correctly. I had to helicoil one of the valve cover bolt holes recently and after two days of riding its leaking from the same bolt. I’m afraid to tighten it...

Hey guys I'm looking for my first bike. Looking at the R3 and the RC 390. I love the look of the 390, but seen so many HG issues, clutch, fans. Ext. I understand that it was the first years had some issues. Are the newer ones less prone and a little more reliable? I'm not going to race it. Just...

So I took my bike in to get the water pump rebuilt. It's been in shop for about a month. They pulled motor off bike and found more issues. Not sure exactly what's going on but I had them send me pictures. Now they are talking to KTM engineers on what they found. How F*cked am I or is it gonna be...

So I took my bike in to get the water pump rebuilt. It's been in shop for about a month. They pulled motor off bike and found more issues. Not sure exactly what's going on but I had them send me pictures. Now they are talking to KTM engineers on what they found. How F*cked am I or is it gonna be...

I've read about the various reliability issues that seem to affect some RC390's, but I'm curious if there are any specific to the 2015 RC Cup, or is it basically the same list? Does anyone know if the RC Cup ECU with Akra flash helps the motor to run a bit richer/cooler, perhaps staving off a...

I'm a bit worried of what the future holds in relation to my RC. I am loosing faith after reading about, head gasket, clutch and a few other common place issues happening. Are there many "high" mileage owners out there who have had zero issues??