Stanke Valve-train Tie Bars hold the rocker shafts rigid and increase valve-train stability at higher RPMs. Each kit includes 10 bars (5 for each cylinder head). Add the optional locking collars to keep the rocker arms in perfect alignment over the valve.  Collars are set with a total clearance of 0.015.  It is highly recommended to use the optional ARP rocker shaft bolt kit,  More information can be found here. We advise against using these with the Comp Cams rocker stud kit. ColorsNon-VVT 5.7 and 6.1 are red anodized. 5.7 VVT, 6.4, and Hellcat are blue anodized.