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Old 05-18-2013, 08:41 AM   #15
Joined: Apr 2005
Location: Seattle
Oddometer: 1,128
I think the rubber part is for noise reduction. Most replacement sprockets I get do not have it and no issues.

I usually run the stock gearing which I guess is 15/45. I have tried 16/45 but that was too high for off road. 14/45 is too low for all the highway I have to do to get to the dirt. For 95% of the stuff I ride off road the stock gearing is OK, but I do not ride much single track.
2014 KTM EXC 500
2014 KTM 1290 Superduke R
2009 KTM 690r Enduro SOLD
2002 RC51 SOLD
2010 KTM 990 Supermoto R SOLD
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