Sintered iron rod guide designed to extend shock absorber life. 3-stage rebound valving for greater control and ride comfort. Wear resistant piston ring reduces friction & leakage in the shocks. Ideal replacement for OE shock absorber KYB Rear Excel-G Shock Absorber 345054 KYB Excel-G Series gas shock absorbers deliver a smooth, responsive ride and are ideal for replacing for worn original equipment items. Using KYB patented valving and nitrogen gas, these shocks will continue to perform no matter what the road conditions. Features: Protective multi-lip seal and shell to keep out dirt. Sintered hard chromed iron rod to extend shock absorber life. Pressurized nitrogen gas to reduce foaming and aeration, deliver better performance. Seamless cylinder to reduce possibility of splitting. 3 stage rebound valving to give better control and fast recovery All weather fluid with wear resistant piston ring to reduce friction & leakage.