Mopar Chrysler BB 383 440 1.6 Stainless Steel Roller Rocker Arms W/ Hardware The OEM replacements get harder

The OEM replacements get harder to find as time goes on

Speedmaster rocker arm adjusting nuts are high-quality polylocks designed for full roller rocker arms

These rockers are precision-machined to ensure consistency and ratio accuracy and have a great looking anodized finish

They feature larger radius stud fillets for extra strength

Mopar Chrysler BB 383 440 1.6 Stainless Steel Roller Rocker Arms W/ Hardware The OEM replacements get harderSpeedmaster extruded aluminum and stainless steel shaft mount rocker system includes steel shafts with pedestals. All rockers feature large needle bearings or bushes and roller tips. For extreme high performance applications. They not only unleash horsepower, but they also lengthen valvetrain component life and reduce wear and tear on valve stem tips. These rockers are precision machined to ensure consistency and ratio accuracy and have a great