2017 KX250F Gearing

nascarnate326
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nascarnate326
Edited Date/Time 7/10/2017 10:13am
What is everyone running for gearing? Its time for a rear sprocket and I am not sure if stock or +1 would be the better setup.

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duckonquack
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duckonquack 6/24/2017 1:03pm
6/24/2017 1:03pm
Probably not the most helpful but I myself found my kx450f needed a bit more speed in lower gears to I went up 2 teeth in the rear. I know a lot of people have done that with their kx
Acidreamer
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Acidreamer 6/24/2017 3:34pm
6/24/2017 3:34pm
Gearing is a preference and depends on how you ride. Do you need more top speed or more acceleration? Top speed = smaller rear. Acceleration = bigger rear.

This also depends on the track youre riding.
pCp 252
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pCp 252 6/25/2017 8:27pm
6/25/2017 8:27pm
I'd stick with the 13/50 unless you are riding supercross type tracks or woods. I've got a lot of seat time on the KX250F's through the years and stock is what I prefer.

You may like the 51 IDK, but I find it runs out of top end speed too soon. It does pull 3rd gear in the corners a little better but the trade off is not worth it IMO.
JohnMatrix
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JohnMatrix 6/25/2017 9:30pm
6/25/2017 9:30pm
Agreed, I have a 51t rear on my kx250f that I decided to try because magazines etc recommended it. I don't like it. I get stuck in more situations where I have to click 4th gear when I shouldn't. Guess it depends on what area of the bikes power you like to be in mostly.

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nascarnate326
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nascarnate326 6/26/2017 4:49am
6/26/2017 4:49am
I am a faster woods/trail rider that is a C class moto goon. I am going to be doing more woods riding. On our local supercross style track the gearing felt perfect. I think I will order a 51 an give it a try.

nascarnate326
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nascarnate326 7/9/2017 9:55am
7/9/2017 9:55am
I got a Primary Drive aluminum 51 tooth sprocket for my race yesterday. On the smaller supercross style track it is perfect for me. Unfortunately the green color is more of an olive/military green instead of a bright green like renthal works connection and kawasaki use. For anyone that finds this in the future its worth a try but get the black one.






jhansen510
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jhansen510 7/9/2017 11:08am
7/9/2017 11:08am
Get a new chain or you'll be replacing the new sprocket again real quick
Tracktor
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Tracktor 7/10/2017 10:12am
7/10/2017 10:12am Edited Date/Time 7/10/2017 10:13am
jhansen510 wrote:
Get a new chain or you'll be replacing the new sprocket again real quick
He will probably be replacing it soon anyway. We tried those rear sprockets and they wore very quickly........We ran stock gearing on our 15's I am guessing the 17 would be similar?...

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