spring rates for 250 lbs rider


4 replies to this topic
  • seatec

Posted October 09, 2012 - 09:18 AM

#1

Can anybody give me an idea of what fork and shock spring rates i would need for a 250lsb rider on a 2012 YZ450. MX !

THanks

  • SAthump

Posted October 10, 2012 - 06:24 AM

#2

Here's a start

http://racetech.com/ChooseVehicle.aspx
or
http://www.mx-tech.com/

they will both be close, your preferences will dictate as well.

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  • dfinn

Posted October 10, 2012 - 09:20 AM

#3

Anyone know what the target weight is for the stock springs? That race tech site says 195 lbs. I weight around 215 and I couldn't get my sag at all close with the stock rear spring.

  • grayracer513

Posted October 10, 2012 - 09:26 AM

#4

Anyone know what the target weight is for the stock springs?


Depends on what you use it for. Stock springs should be good for from 175-190 for aggressive MX, or up to 200 or so for off-road. What are your sag numbers?

  • dfinn

Posted October 10, 2012 - 09:55 AM

#5

Depends on what you use it for. Stock springs should be good for from 175-190 for aggressive MX, or up to 200 or so for off-road. What are your sag numbers?


I have them at home and unfortunately I'm at work but I spent some time trying to get it dialed and could not get both the static sag and sag with me sitting on it in the range recommended by MXA. I was trying to get the sag with me on it at 100mm and I think the closest to that I was able to get was around 70mm and that threw the static sag way off. I'm actually about to go pick up the bike in just a few minutes from my local Pro Action rep who put new springs on it for my weight.





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