Hello. Your stock spring is indeed a 4.7kg. With a YamaLink at your 150 pounds (without gear) we recommend a spring rate of 5.1 or whichever is closest you can get.
Wednesday, February 19, 2014
Dave writes "I have a YamaLink for my 2012 WR250f. Without gear I weight 150lbs and wanted to know what spring you recommend. RaceTech says my Stock Shock Spring is 4.7 but I am not sure if that is correct."