Hello Guys, I am hoping you can confirm something for me regarding a rear spring: I have a 09 WR450. I weigh about 175 lbs (190 w/ gear). I think I need a rear spring with a rate of about 5.5 (sound right?) I think the stock spring on a 08 YZ450 is 5.5 (sound right?). If all that is fact, I am thinking I can put the stock YZ spring on my WR and I should be good to go as far as getting my rear sag set up properly. Am I missing something? I got the spring from a friend, from when he had his suspension done on the YZ. I do not see any marks or color codes on the spring itself.