RSO Suspension Adjustable Compression and Rebound (ACR) Shocks with Piggyback Reservoir provide improved suspension damping while increasing on and offroad driving comfort. They feature hand adjustable compression levels as well as adjustable rebound for the off-roader that is serious about their suspension tuning. These 2.5in smooth bore machined alloy bodies give maximum corrosion resistance. The 3/4in steel shafts protected by the included high impact ABS rock guards and heat-treated steel spherical bearings offer strength and dependability. Its external reservoir allows for increased oil and nitrogen capacity giving greater heat dissipation, increasing performance, and eliminating shock fade. The piggyback design keeps the reservoir tight to the shock body away from any moving suspension components with no need for cutting or drilling. Experience for yourself the incredible performance and precise control that RSO Suspension’s new compression and rebound adjustable piggyback shocks deliver.