The 2014 (yellow) rear spring is 550lbs/in. The 2015 (red) rear spring is 475lbs/in.
EBR used to sells 3 more 550/575/600lbs/in.
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I have done extensive testing between the red and yellow Buell rear shock coils but have yet to post because stupid Photobucket:( The results were surprising.
Check your sag. If you weigh less than 200 lbs and aren't a track only rider, I would highly recommend the lighter (red) spring. The stock rear shock is a very, very, nice part. I have a yellow rear SX spring if you need it.
I have not tried it But you might try Flickr, Not Me , LOL
https://www.flickr.com/photos/905456...-bm8gAF-edJbsb
I'm anxiously waiting to see pics of the OP's new bike!!!
It'll be a bit before I get time to update the forums; check out my Facebook for updates. Ross Phelan Daigle.
Looks good! going to be killer once you have your list of mods installed!
https://www.facebook.com/Phelan.zR1 Looking God Ross !!!