KYB 331037 Excel-G OE Replacement Strut A seamless working cylinder vs welded seams provides the best sealing surface throughout the entire piston stroke Precision multi-stage hydraulic valves that reduces fluid travel to minimize aeration and are calibrated the way OE intended the vehicle to perform Triple chrome plated piston rod and multi lip oil seals that reduce wear Solid seamless mounting eye rings and bolt bushings that can't separate and become noisy A Teflon coated or phenolic piston band that reduces friction and provides a positive cylinder seal