OER-1529 Offset Endurance Rocker Harley J & JD 1915-1929 Cylinder 750" from end to end

750" from end to end

Fits Front or Rear Cylinder

1937-1940 W

At some point in the early/mid 20’s

Harley started using the larger cylinders for both the 74” and 61” motors

OER-1529 Offset Endurance Rocker Harley J & JD 1915-1929 Cylinder 750" from end to endPair of Competition Distributing's Offset Endurance Rockers These rockers have a larger offset than the stock versions allowing your intake valves to open further and increase airflow. Case hardening of the arms to increase wear resistance. Oil Impregnated bronze bushings on the pivot and Aircraft Grade hardware with encapsulated lock nuts. These will work on Harleys from 1915 1929. You just have to add the larger push rod end for the earlier models.