When you say SS do you mean stainless steel?
Yes, they made 2 versions Stainless steel and Chromoly links for our car.
off their page
Racingline endlinks are much stronger, adjustable, and more responsive than the oem units. These feature allow for a longer life span, effective corner weighting (using L/H &R/H threads), NO CLUNKING and improved sway control.
Each link consists of
-billet 6061-T6 aircraft grade aluminum turnbuckles that are hard anodized to insure great looks, long term durability and corrosion resistance.
-Rod-end/Hiem joints are TEFLON lined, and are made from a chrome plated chromoly alloy steel for superior strength and durability ( also available are Aurora bearing rodends or Full stainless steel)
-Polyurethane bushings which act as dust boots to keep contaminants out of the bearing race as well as provide load resistance for an improved linear sway bar response. They also provide superior insulation against elevated NVH levels, a condition seen in typical hiem joint style endlinks. Each bushing is graphite impregnated so they will not squeak or need constant lubrication.
*Aurora Bearing is considered by many to be the industry leader in quality rod ends, and are used on many race cars both amateur and professional. They are a 3 piece design, high strength carbon steel with a yellow zinc coating with a TEFLON liner
*Stainless steel is not recommended for cars that are going to see extended track duty, but are strong enough for the occasional track day and northern climates. they are a 3 piece design with a TEFLON liner, and a copper bearing race
*Chromoly series is high strength chromoly steel with a thin chrome dipped coating to aid in corrosion resistance