Shock Repair Kit. The only complete shock rebuild kit on the market. Restores plush action to one shock absorber. Includes bladder, new complete piston seal head, piston ring, piston O-ring, bumper, and new shaft nut. Includes Chevron Starplex® EP lubricating grease to ease installation. Backed by a lifetime replacement offer. Note: Actual kit contents may vary by fitment.