ProFlow's upgraded rocker arms feature high-quality rocker bodies that utilize the factory style fulcrum mount. They are made of high-grade 4340 Alloy steel construction to ensure long-lasting durability and performance. These rocker arms are a perfect upgrade for higher rate springs and performance camshafts. Proflow's roller tip rocker arms are a perfect cost effective upgrade because they cost less than a oem stock replacement. Included are fulcrums and posi locks. Note: Rail type are typically used on later heads with round pushrod holes that rely on keeping rocker body positioned on valve stem If using early heads with slotted pushrod holes for rocker positioning then please use our PFERRK-3003
