questions about sprokets on my 426

4 replies to this topic
  • bajascott

Posted October 13, 2013 - 07:34 PM


I just got my yz426 plated and was out tooling around,i want to give it better highway gearing.

 it has 13/48 on it now, and just screams bloody murder over 45 mph. being somewhat new to bikes I don't know where to start.

 do I get a bigger front and bigger rear?

it concerns me to rev this that high........ any help?

  • MT400f

Posted October 13, 2013 - 08:57 PM


Add teeth to your front sprocket, or go smaller in the rear. The front sprocket will make a bigger difference in gear ratio per tooth than will the back. You can make coarse adjustments with the front sprocket and fine-tune with the rear.

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  • MT400f

Posted October 13, 2013 - 09:00 PM



This chart can provide an understanding of how significant a change you will make.

  • grayracer513

Posted October 14, 2013 - 06:35 AM


The stock YZ426 gearing is 14/49.  You are currently way below that.  Try a fifteen on the front.

  • bajascott

Posted October 19, 2013 - 06:31 AM


thanks, I put a 14 on the front and come to find out I am blind .....the rear has a 49

it did make a good difference but I think I am going to put a 15 up front.

 I took it work the other day and was a lot more comfortable to ride,but still geared to low.

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