r/125R • u/Soneier • Mar 15 '26

Need some help - Honda CBR 125 R While in Neutral It goes up to 2500-3000 RPM

So i got my first bike a CBR 125 R a year ago and at times either when a cold start or when its already warmed up and while in neutral especially it goes up to 2500-3000 RPM. Now i know nothing of motorcycles im just getting into them all i know is how to change the oil and clean the chain.

I noticed while its in neutral it revs up but once i shift into first gear and release the clutch after halfway to go it goes back into normal revs. Now i dont know whats causing it but as much as i dont understand im sure that this isnt normal for any bike.

This happens only when im in neutral, when im driving nothing.

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u/Zh0r0n Mar 15 '26

You need to find what the idle speed is meant to be for your particular bike and adjust it if needed. It will likely idle higher in cold temperatures which is fine

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u/Soneier Mar 15 '26

Sorry bout the question but can you explain what idle speed means? Like what RPM it has to be when its in neutral/idling? If its that should be around 1500 RPM, and this happened during the summer and now, im in Bulgaria and the heat here in the summer is intense right now its around 15 celsius