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Just curious, how much the the guys riding the Groms weigh? But seriously. Check mph with a GPS as the speedo can be off by a few mph. Some bikes are just faster from the factory than others. Maybe you got real lucky.
 

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Should have an error of ~5% not ~9-10% like the Benelli.
 

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I have a question my z is brand new an it hits 67mph stock it hits red line if I dont slow it down is that normal? Any thoughts?
Yes ,
http://www.z125owners.com/forum/kawasaki-z125-general-discussion/2249-top-speed-achieved.html

hitting the rev limiter at around 67mph is normal .
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But, unless you were using GPS for the reading, looking at the stock OD reading your actually doing 64 with stock gearing and stock tires.
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http://www.z125owners.com/forum/kaw...speedometer-reading-errors-n-corrections.html
 

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Man I weigh 165-170 and I can only get mine up to 58mph consistently. Downhill full throttle I have hit 62mph but the roads aren’t straight so o have had to slow down to make the corners. I just did a mod to the airbox and acceleration is now a lot cleaner though!
 

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