0.40 Kg/mm Fork Springs For 48mm Kayaba Kyb Yz125 Yz250 Yz250f Yz450f 453mm Long on 2040-parts.com
Red Wing, Minnesota, US
These springs are used and appear to be OEM items as they are not marked for spring rate. I purchased them as 0.40 kg/mm units from a suspension guru.
The springs measure 1.74” OD, 0.192” wire diameter, with 25.6 total turns. Using the standard formula, this calculates to a spring rate of 0.39 kg/mm. (An acceptable cross-check for me.)
They are 453 mm long. I had them in a 2006 YZ450F.
Based on those dimensions, I used Cannon Racecraft's fitment guide to determine they will probably (but I do not guarantee) fit the following Yamaha models:
2006-2012 YZ125
2006-2012 YZ250
2006-2012 YZ250F
2006-2009 YZ450F
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