King 25001-378A Rear 2.5" Piggyback Reservoir Shock Absorbers with Adjuster for 6" Lifts

The King 25001-378A is a pair of rear 2.5" diameter piggyback reservoir performance shock absorbers engineered for vehicles running a 6" suspension lift. Built entirely in the USA, these shocks deliver the precise damping control and trail-proven durability that King Shocks is known for in off-road performance applications.

The external piggyback reservoir design increases oil and gas volume while reducing operating pressures, resulting in improved fade resistance, consistent damping performance, and a superior overall ride quality on and off the road. The included compression adjuster ("A" suffix) allows tuning of damping force to match terrain and driving preferences without specialized tools.

Key Features:

• 2.5" precision-bored shock body for optimal support and consistency during heavy off-road use
• External piggyback reservoir for increased fluid and gas capacity, reducing fade and improving consistency
• High-flow bypass valves for precise adjustability with no unregulated bypass flow
• Compression adjuster included — fine-tune damping on the fly for varying terrain
• Aircraft-quality billet aluminum components throughout
• Hard-chromed, heat-treated, micro-polished shaft for long service life
• Cadmium-plated chromoly shock body for corrosion resistance
• 100% designed and built in the USA
• Backed by King's 90-day manufacturer warranty

What's Included:

• Pair of two rear shock absorbers (2.5" piggyback reservoir with adjuster)
• All necessary washers, bushings, and nuts for installation
• Factory shock mounting bolts are reused

The King 25001-378A shocks are custom-tuned to deliver unparalleled performance and ride quality, with each unit subjected to real-world testing to develop the optimal damping curve for 6" lift applications.