Speedmaster 1-261-041 1.6 Ratio 5/16" Roller Rocker Arms for Ford SB

Ford SB 289 302 351 Windsor 1.6 Ratio 5/16" DNA® Aluminum Roller Rocker Arms Speedmasterª DNA_ roller rockers are the toughest and most innovative rockers we've ever made. Crafted from certified aircraft-quality, heat-treated aluminum, they're matched to massive, precision-ground trunnions for superior durability, and optimized rocker arm geometry evenly distributes the load for maximum strength. DNA_ rocker arms also utilize oversized needle roller bearings for better load distribution and longer service life. Finally, they're black anodized Extruded from 6061 T6 Aluminum Precision-machined to ensure consistency and ratio accuracy