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Hello My lithium battery is weak now (after only 2 years, but ok) There is enough power for the light and the electronic but not for the starter motor. I tried tu push ro start the bike, but without any success (the rear wheel is turning and the engine is driven, but no combustion. I have PCV...

Hello. I do not understand why, but I posted this message : https://www.rc390-forum.com/forum/ktm-rc-390-general-discussion-forum/3192-ready-race-machine.html#post29952 But when I want to edit it, it becaome completely empty. Why that? How could I avoid this? I tried from an other computer and...

Hello from France. Sorry for my French accent ("but it's so cute!") I plan to describe here the motivation, evolutions, and feedback about my RC390. I will try to update this first post with the complete list of changes done, and link to individual description and feedback (or at least a...

Hello. <My life : ON> I had a Powertronic module (first generation), but it is a PITA to make calibration as the table does not depend of TPS but quantity of fuel injected by the ECU. (2nd Generation is better because of 2 maps and TPS based calibration) So I finally bought a second hand PCV >My...

Hello I will make later a complete post about the story what I'm doing on my RC but here is a specific topic about the exhaust : My background is : - I use mainly the bike on track, but want to keep it almost street legal for potential use on road. - I HATE the noise of the stock exhaust...

Hello I like the way the forum is splitted. But I think an update would be welcome on the technical section, just for naming the sub forums I propose to rename "Engine and Technical Discussion" by "Engine Discussion" (eventually add the Fuel injection subject) I propose this as the next parts...

Hello After an other crash on track yesterday (no injury) (at low speed), my front brake master cylinder seems damages internally. It brakes, but if I keep the pressure, after 1 seconds the pressure decreases until the lever touche the grip. I imagine at least the piston or gasket is damaged...

Hello everyone. our bike has a fine design, but there is a spot that I do not understand. It is like is a fairing or cover was missing ... and I find it uggly. I'm surprises that I've not seen any accessory to cover this part. It is located in the fron low side of fuel tank cover. Did I miss...

Hello. I would like to use the same orange as frame and wheels on part of the fairing. I try to find the color code of the Orange used, but I fond sometimes RAL 2004, and sometimes RAL 2009. Maybe, depending of the KTM the orange changed? Do you have the info about the color code of the Orange...

Hello In order to paint in the proper way, do you know if it is possible to separate the black and the white panel, one from the other, on each side? Tyga fairing is composed of 2 parts, but KTM is selling this as only 1. Thank youy for your experience sharing

Hello I modify my RC for track but want to keep it still road legal. I'm planning to use TYGA front fairing, then I have a question : if I simply add holes, is it possible to mount the stock mirrors? (I plan to add lamps to the mirror in order to have high/low beam anyway, and remove them for...

For racing purpose, max torque/power is of course a key parameter, and piggyback ECU as PCV, GET, Powertronic, Bazzaz is good for us. For road usage, we are not interested only in full load, but also partial load. Removing the calatyst converter, we don't care anymore to be at lambda 1, and we...

Hello I just want to inform that the HardRacing logo, in the front page of the forum, has a wrong link "https://%20http//hardracing.com/%20/" (Sorry I still don't know how to inform the administrators only)

"Ne tire pas la langue" means "don't stick your tong out". This is what i've been told by my mum' many years ago. Now, I want to say the same to my RC... due to the position lights, and the hole in front of the headlamp I tried to solve it in an easy way called 90508908044, meaning "KTM Racing...

Hello I had the feeling that my right handlebar is slightly bent, following a low speed fall on track. Nothing serious. Then I looked in parts catalog, and I extremenly surprised by the comment : I did not know that 2 models of triple clamp and handlebar are existing, and that the handlebar...

Hello I would like to study a possible exhaust, and I'm looking for valves timing. It is not in the owner manual, and I'm surprised to not find it either inside the KTM Workshop manual. Is there any technical litterature (similar to Haynes manual) about our prefered bike? The engine stability...

Hello Our bikes are famous for over heating easily. I removed the grind in front of the radiator but it's not enough. I'm thinking to remove the calorstat inside the collant line, on order the water goes more easily to the radiator. Of course the engine will tame more time to warm up, but for...

Hello I'm surprised that the poly I've found are usually more expensive than KTM parts. (at least in Europe) So the gain could b aesthetic and weight, but probably not cost in case of falling. If we are just looking for aesthetic, I'm wondering if covering would be possible on RC390, but I'm...

Tout est dans le titre. Montrez vous, les voisins! Loic

Hi! I'm 44 years old, in France. Fan of motorcycle, mechanic, restoration or old motorcycle. I'm fan of carbuterors ... but my job is project manager for motorcycle EFI system (direct competitor of Bosch system used on RC 390) I plan to buy a RC 390, if possible almost street legal, but mainly...