DJ-2102-PH Predator Hemi 1.2 Ratio Roller Tip Rocker Set (4) ***MUST USE WITH DJ-1070CM PUSH RODS. Rocker Arms, Roller tip for the Harbor Freight Hemi Predator 212 from NR Racing. Machined from chromoly steel in 1.2/1 ratio. Hardened roller tips and shafts Dyno tested to 10,000... $149.15 Add to Cart The item has been added Compare