Ktm lc4 640 supermoto engine vibration ? Normal ?

Ktm 640 lc4 vibration ? Is it normal ? Moves backwards when idling with choke on ?? K

[stevenshepherd]

Its a big 1zyl engine i would be worried if it wouldnt do it

[ducky]

Yup, totally normal. Mine does it too. You idle is high though.

[C_R_O_M________]

It’s actually pretty smooth in comparison to a bike I used to own, a 2005 640 Adventure.

[SilverPT]

I have same model, it vibrates but iddle speed is lower than yours . Around 1700 rpm is where those engines should iddle.

But yes sometimes on stand its moves 😅
Too much power!

[Totty]

Its a 1 cylinder engine bro. Absolutely normal but the RPM is way higher than its should be

[arnoldschwarzenegger]

I just bought my first 640 and at freeway speed it feels like it's revving high. These things are happy cruising along at 75 mph right?

[lazaro]

Hi guys, I'm thinking about buying a similar bike(LC4 640)

what's your opinion?

[picatrixspirituel]

I think is a little more then is should to be

[skelett]

Oh bro thise water cooling hose is going to get down..
i had the same! It came off twice, bad material.
Get on for 220$ you will se

[timacamalatdinov]

It must be like that . I have same bike

[tomskimcdouglegaming]

Your valves are too tight, it's not rattly enough

[sMc-zu]

sa ustawione za wysokie obroty na gazniku

[robbievanover]

I got a 2000 640 and it makes a rattle noise too was worried it was the valves or piston but it is a big motor lol

[Phunker]

Haha! Totally normal. You should look at the old 620 or, even better, the 600. Those were vibrations. This is nothing.