The 8125 Series are performance coilovers for the serious off-road enthusiast, available in both 60mm (2.65?) and 46mm (2?) sizes. Designed for use with dual-rate springs and available in a wide range of travel lengths, the 8125 Series are perfect for custom coilover suspension applications. Equipped with a competition designed, 3-stage seal pack, the 8125 Series will withstand the harshest off-road environments. All 8125 Series include a 22mm hard chromed, case hardened piston rod which provides exceptional tensile strength and resistance to sand blasting and rock chipping. Incorporated remote reservoir combined with a high-temp hose provides consistent fade free performance under conditions of intense heat. The zinc coated threaded body allows for quick ride height adjustments and spring changes. The 8125 Series are completely owner rebuildable with replacement parts available from BILSTEIN All components are machined to precise tolerances insuring a high quality product. All components are machined to precise tolerances and made in the USA to insure a high quality product.