The Rock Krawler RRD shock for the 2021+ Jeep Wrangler JT (diesel) is specified as the Stage 1 shock for the 3in Adventure X system. Provided to pair with that 3-inch suspension package, the RRD Stage 1 shock is the damping component matched to the Adventure X kit and intended to be used as part of the system's Stage 1 offering.
Rock Krawler 2021+ Jeep Wrangler JT (Diesel) 3in Adventure X System - Stage 1