All of our coil shock have a white "Legend" logo stamped on them, and following "Legend" is a number, either 110, 130, 850, or 1000. 

On all of our REVO, REVO-A, and REVO ARC shocks for FL Touring, Dyna, V-rod, Sportster, FXR, and Street models, the "Legend110" is the standard spring, and "Legend 130" is the heavy duty version. 

On the REVO-A Softail shock, if the springs say "Legend 850" those are the standard springs, and "Legend 1000" is the heavy duty version.