King 2.5 Piggy Back Coilovers with Internal Bypass come pre-tuned from AccuTune Off-Road. Every 2.5 Internal Bypass King Coilover is pre-tuned to provide the best performance for your vehicle and your terrain. Piggyback 2.5 King Coilovers are a huge improvement over separate shocks and springs because they allow for dual rate springs with better bottoming control, and longer travel. Adding Piggy Back Reservoirs to your 2.5 King Coilovers increases heat dissipation, ride quality, and damping consistency. 2.5 King Internal Bypass Coilovers add position sensitivity to your coilovers when class rules or space constraints prevent an external bypass shock. Step-up to Pre-Tuned King 2.5 Remote Reservoir Internal Bypass Coilovers from AccuTune Off-Road.