These Billet Linkage Kits feature stainless steel rod arms and hardware, right and left-hand spherical ball end joints and a 6061 T-6 billet aluminum bell crank that utilizes sealed ball bearing pivot points. Available in 4 different colors that include Red, Black or Blue anodizing. The Race Linkage mounts to the engine case half studs, while the Street Linkage mounts to the alternator stand studs. There is also a Street Linkage model that can be used in conjunction with the “Jack Stand” billet alternator stand.