Top speed on gz250

Skunkhome · 05-07-2012, 08:15 PM

I have been searching but must be using the wrong search criteria. I am a big guy (250lbs but loosing) and am generally happy with what I believe to be a Stock GZ250. Performance seems to be fine as it keeps up well with surface street traffic (well actually can run off and leave most autos in traffic if I have a mind to do so.) but I am curious as to just what sort of top speed is typical of a stock bike with a lard bucket like me onboard. What is the benefit of adding a 16T front sprocket. I realize that it woud move my shift points up by 6-7% but other than that would it improve my top speed or just reduce the maximum RPM in overdrive (5th gear). I am quite pleased with the amount torque the bike has now and am concerned that the 16t sprocket might reduce the torque significantly. Another issue is that i do not want to adversly effect my gas mileage. Can the 16T sprocket be installed with the stock chain ?

Glewis950@gmail.com · 07-23-2018, 08:02 PM

I did it the 16 tooth sprocket and I love it. Less shifting and less viberation. When turning from a stop at an intersection I can at least get through the turn before shifting to second. I have found it easier to maintain top speeds (70+) when I take the RPMs up well into the power band before shifting to fifth.
(Comfort) something that helped make my bike fit me better I raised the front of the seat an inch and placed a 1 inch thick foam pad in the lowest part of the seat causing me to sit up and back a bit. More comfortable seating, shifting and braking. P.S. I weigh 215 lbs, 30 in. Inseam and 76 years young.

09GZ250 · 07-24-2018, 12:15 AM

I got mine to 87mph when I did a top speed run flat road. I weighed 107 at the time.

05-07-2012, 08:15 PM	#1
Skunkhome Senior Member Join Date: Mar 2012 Location: Louisiana Posts: 203	Top speed on gz250 I have been searching but must be using the wrong search criteria. I am a big guy (250lbs but loosing) and am generally happy with what I believe to be a Stock GZ250. Performance seems to be fine as it keeps up well with surface street traffic (well actually can run off and leave most autos in traffic if I have a mind to do so.) but I am curious as to just what sort of top speed is typical of a stock bike with a lard bucket like me onboard. What is the benefit of adding a 16T front sprocket. I realize that it woud move my shift points up by 6-7% but other than that would it improve my top speed or just reduce the maximum RPM in overdrive (5th gear). I am quite pleased with the amount torque the bike has now and am concerned that the 16t sprocket might reduce the torque significantly. Another issue is that i do not want to adversly effect my gas mileage. Can the 16T sprocket be installed with the stock chain ? Login or Register to Remove Ads
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07-24-2018, 12:15 AM	#3
09GZ250 Junior Member Join Date: Jul 2018 Location: Vivian LA Posts: 14	I got mine to 87mph when I did a top speed run flat road. I weighed 107 at the time. Login or Register to Remove Ads
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07-23-2018, 08:02 PM	#2
Glewis950@gmail.com Junior Member Join Date: Mar 2018 Posts: 5	I did it the 16 tooth sprocket and I love it. Less shifting and less viberation. When turning from a stop at an intersection I can at least get through the turn before shifting to second. I have found it easier to maintain top speeds (70+) when I take the RPMs up well into the power band before shifting to fifth. (Comfort) something that helped make my bike fit me better I raised the front of the seat an inch and placed a 1 inch thick foam pad in the lowest part of the seat causing me to sit up and back a bit. More comfortable seating, shifting and braking. P.S. I weigh 215 lbs, 30 in. Inseam and 76 years young.
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