Designed for RockShox Vivid and Kage rear/frame shocks (running change from black to gray color on select sizes/rates) 
 A steel notched spring retainer/collar should be used on all spring rates 550 lbs or greater. Alloy can be used on spring rates 500 lbs and lower 
 For Drop Stop bottom-out bumpers and spring collars, see rear shock service parts
| stroke | 
63-70mm/2.50-2.75" | 
| rate (lbs) | 
650 |