CBR300R engine break in - Honda CBR 300 Forum
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post #1 of 62 Old 08-15-2014, 01:38 PM Thread Starter
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CBR300R engine break in

Hey folks i am on day 3 with the new bike and wanted to see how much i should be pushing it for now,it has 150kms on it thus far probably more before get to read feedback.

cheers Jase
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post #2 of 62 Old 08-15-2014, 02:12 PM
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Most of the critical engine break in happens in the first 25 miles (40 km). By then the piston rings have taken a 'seat' against the cylinder wall, and other metal to metal surfaces have begun to wear in together.

At this point just ride the bike like normal. There is no need to 'baby' it. I would however recommend not cruising at steady speeds/rpm's for at least another several hundred km's... you want to vary the rpm's by working through the gearbox and different throttle positions, as well as doing a fair amount of deceleration by engine braking. Finally, I'd recommend doing an oil & oil filter change soon... you don't have to wait until the first service at 1000 km's. I did the first oil & filter change at 250 miles on my CBR250R.

Also it's always a good idea to read through the Owner's Manual... lots of good info that you'll need to know about your new bike.

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Last edited by MotoMike; 08-15-2014 at 02:26 PM. Reason: additional comment
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post #3 of 62 Old 08-15-2014, 04:12 PM
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You can gradually start pushing it harder now. Shouldn't be too careful at this point.

And BTW, welcome to the forum!
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post #4 of 62 Old 08-16-2014, 12:52 PM
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While not knowing what your past motorcycle experience is, if you are an experienced rider I'd say that you can now start riding your new 300R like you stole it. You won't hurt it by running it up to redline... although I'd still recommend staying away from steady speed/steady engine rpm cruising until you at least get a few hundred more km's on the odometer.

One of the "Catch 22's" for new, first time riders who buy a brand new motorcycle, is that they more often than not do not possess the riding skills to properly break in a new engine... engines that are broken in by the cautious riding style of a beginner generally won't develop the same peak horsepower and torque as the same model bike that is broken in by an experienced rider. In other words, if you could hire Marc Marquez to put the first few hundred miles on your new bike, you'd more than likely have one of the fastest CBR300R's around.
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post #5 of 62 Old 08-16-2014, 03:43 PM Thread Starter
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Cheers Mike i had not riden a bike in 15 years but after a day on the cbr i am now comfortable on it and prepared to give it some and if you suggest i really push it that much well that sounds like good fun i havent yet had it anywhere near redline as these sorts of revs are new to me but great fun.

music to my ears 200kms on the odo and ready for a floggin Jase
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post #6 of 62 Old 08-17-2014, 01:27 AM Thread Starter
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Cool so i went out today for a bit and gave it a bit more observing all speed limits...
best i could but a few highway entrys at near full flog and it is a different toy at 10k,being a "learner"rider i am "restricted"to 90kph"...

hehe... but i did observe the laws
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Last edited by Jase; 08-17-2014 at 01:38 AM. Reason: legal reasons
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post #7 of 62 Old 08-18-2014, 01:28 PM
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Originally Posted by Jase View Post
Cool so i went out today for a bit and gave it a bit more observing all speed limits...
best i could but a few highway entrys at near full flog and it is a different toy at 10k,being a "learner"rider i am "restricted"to 90kph"...

hehe... but i did observe the laws
of course
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post #8 of 62 Old 08-22-2014, 01:48 PM Thread Starter
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vague question but what is the best rpm range for town riding?if i do have to sit near a steady speed it is usually around 4-5k under 4k sounds a little chuggy.

9k sounds awsome.for a moment then i have to slow down again.
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post #9 of 62 Old 08-22-2014, 02:01 PM
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4500 to 5500 is a good rpm range for slower road speeds... and you're right, under 4000 rpm is pretty much lugging the engine in most situations, unless you're just running in first gear like you would in a parking lot or a similar situation.

“Machines never lie.
Success will always come if they’re really good.
So let’s show the world what we’ve done.
Then they can see the real Honda!”

- Founder Soichiro Honda at the inception of the Honda Collection Hall.




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post #10 of 62 Old 08-22-2014, 03:01 PM
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I would avoid full-throttle acceleration for at least 300 mi. That would be my preference, and I'd probably go to 500 miles if I could help it. Isn't there anything in the manual about break-in? There's so much contradictory "conclusions" when it comes to breaking an engine in. But the engine isn't the only thing breaking in which is why I would avoid full-throttle for awhile. Some people say after initial break-in that you should drive it like you normally would so that things settle in to suit how you drive. Just some thoughts I'm throwing around so don't listen to me!
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