Tuff Country EZ-Ride SX8000 Nitro Gas shock absorbers are recommended for all full-size applications. The nitrogen gas pressure reduces fading and gives quicker shock response.FeaturesIdeal for lifted full size trucks & SUVsNitro gas charged to limit fadingPolyurethane bushingsTwin tube constructionShock boots sold separatelyShock boots not includedLimited lifetime warrantyMade in the USASpecificationLift Front: 2Axle: Front