Billet roller rocker arm kit for the Predator 670 engine. These rocker arms are precision CNC machined out of high grade 7000 series billet aluminum and feature a hardened roller tip and a hardened adjuster. These are a direct replacement with no modifications needed. The kit includes 4 rocker arms, 2 billet covers, oring seals for the cover and hardware.
Rockers are the stock ratio and valve lash should be set same as stock.