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Highway speeds seem attainable, but the RPM's are waaaaaaay high. Is it safe to run this bike in the 65 - 75 mph range for extended periods? (assuming you have supporting mods allowing for such speeds)
 

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Look at the ruckus motors. Pretty much banging off limiter allllllll day of every day. Honda knows what they are doing
 

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Highway speeds seem attainable, but the RPM's are waaaaaaay high. Is it safe to run this bike in the 65 - 75 mph range for extended periods? (assuming you have supporting mods allowing for such speeds)
from my personal experience it's no problem at all! been cruising the highway at 60+ mph speeds for 30 min + straight, engine was just fine with it (I think you will get annoyed faster then the engine)
the rev limiter will stop you from hurting the engine anyway.. dw Honda wont let you :D
 

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I am guessing they set the rev limiter to make sure you won't over-rev the engine. You know there are plenty of engines that rev at almost double those rpms and do fine. 14,000 rpms is typical for a sport bike. I used to run my Ninja 250r wot at 12,000 rpms for hours at a time. All that happened was there was more engine heat, but the motor did fine.
 

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Rev limiter on the Grom (at least on mine) kicks in at about 9200 rpm
 

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Does anyone know what the rev limit is on the '22 Groms. Red line on the tach starts 8250 and goes to 10k. I've been gradually increasing how high I rev this thing out and if you can believe the tach I've seen 9k plus in 2nd or 3rd and no spark cut-off. I expect it cut out at some point. Every other bike I've owned had some sort of ignition cutout when you reached the limit the factory has set. My '22 Grom just seemed to keep revving! Thanks for any info you guys can share.
 

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Let er rev till the cows come home and try not to worry about it. More than a few guys have given these motors utterly masochistic break ins, let alone run them at high revs for extended periods of time. Pretty sure the rev limiter on the new bike is the same as the old one at 9200
 
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