Eric's 2012 WR250F yamalink spring question

Hi. I have just bought your Yamalink to lower my 2012 WR250F. I weigh 170lb. Do i need to replace both front fork springs and rear shock springs before resetting the sag? Eric

Our reply: "Eric. No change to the fork springs are required. You will need a heavier rear spring without a YamaLink because at 170 without gear you are a little over the factory stock spring sag range. The stock spring is a 4.7kg."