Taken off a 2016 FXDB. These are the progressive suspension 13" 444 series standard spring rate. These rear shocks were on the bike for less than 200 miles before taking them off. The reason why I am selling these is because I upgraded to the 970 series shocks. These shocks are basically like new. It comes with everything needed to install. You won't be disappointed! Asking $410 Shipped.