4600 shock absorbers are designed as a direct fit upgrade to OE shock absorbers on stock height light trucks and SUV's. These shock absorbers feature a monotube design which provides consistent fade free performance. 4600 shock absorbers utilize a unique, velocity sensitive, digressive piston which reacts to changing road conditions. All 4600 shock absorbers are tuned for each specific application to ensure optimal performance is achieved. 4600 shock absorbers offer a significant improvement in ride quality, handling, and comfort. We know that you depend on your vehicle for many aspects in life, and we build a product that you can count on. When it comes to performance and dependability, you can trust that its builds to the highest of quality and safety standards – and we back our products with a warranty to prove it. These 4600 Series shocks comes with a limited lifetime warranty that covers defects in design, material, and workmanship. These shocks fits 2007-2021 Tundra Limited and SR5 Submodels; Reuse OE upper mounting hardware.