BILSTEIN 5100 Series *Lifted Performance* Bilstein 5100 Series Shock Absorbers are high gas pressure monotube shocks designed specifically for lifted pickups, SUVs and s. The shocks feature a 46 Millimeter digressive piston with self-adjusting deflective disc valving. They offer super damping ability that makes them ideal for heavy hauling or occasional off-road use, while maintaining an exceptional street ride. (zinc-plated steel body, Triple-C-Technology coating) Features and benefits: Individually engineered for a wide array of specific vehicles and lift combinations Monotube gas pressure technology Easy to install; direct bolt-on; no modification required Multi-layer zinc finish is the most durable in the industry 5100 Series provides the most comprehensive range of vehicle applications Lifetime Warranty Features: Bilstein Monotube Technology Tuned By Bilstein Ride Engineers Application Specific For Popular Lift Kits High Performance And Improved Handling Limited Lifetime Warranty