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sgrimmxdad sgrimmxdad
12/26/2017 2:13 PM

I plan on caring my riders to a couple of the amateur days at Arenacross events this year. Both will be riding stock yz250f's. I am looking for gearing advice.

I have just added an ax track to our home track, so plan on doing some testing but looking a good starting point. Only have a month to the first gate drop!

2020 YZ450F
2018 KTM 450SXF FE
2016 YZ250F 2008 CRF450R
2015 YZ250F 2008 CRF250R
2001 CR250R
2010 YZ250 2012 CRF150R
2009 YZ125 2010 KX109.5
SSR Motorsports Dealer
TAGMX Suspension & Graphics! www.tagmxsuspension.com https://www.liquidskinzdesign.com/



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SmokinJoe439 SmokinJoe439
12/26/2017 2:27 PM

At least one tooth added to the rear is a good starting point. You will be amazed how much you'll be able to hit / clear in 2nd n 3rd gears. You might hit 4th in the whoops and the straight.

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MarkF MarkF
12/26/2017 3:32 PM
sgrimmxdad wrote:

I plan on caring my riders ...more

My son rides a 17 YZ250f, stock motor, slight valving tweaks for local arenacross races. He is a top local pro rider. He runs a 13/52 for gearing. The local races here are 5000-6000 feet altitude.

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The Candyman The Candyman
12/26/2017 6:39 PM

All about the 13T/49T!!! 13/50, 13/51, 13/52 and I feel like I'm on a 125 (on a STOCK bike on tight technical track)...Let us know how everything turns out and good luck. Test with different track conditions as well smile

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sgrimmxdad sgrimmxdad
12/27/2017 2:39 AM

Thanks for the replies, I think I am gonna try the 13/52 first. I will keep you guys posted!

2020 YZ450F
2018 KTM 450SXF FE
2016 YZ250F 2008 CRF450R
2015 YZ250F 2008 CRF250R
2001 CR250R
2010 YZ250 2012 CRF150R
2009 YZ125 2010 KX109.5
SSR Motorsports Dealer
TAGMX Suspension & Graphics! www.tagmxsuspension.com https://www.liquidskinzdesign.com/



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SKIDLID SKIDLID
12/27/2017 5:46 AM

I haven't raced arena cross in some time. The last time I did was on a 1998 yz125 and I used 13/51 for the gearing. It kept me in 2nd and 3rd gear.

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