7109-2 Crankpin nuts. 36-52 models

When rebuilding the bottom end of a pre-war or early post-war Big Twin, the hardware you use is absolutely critical. These Colony crankpin nuts are precision-manufactured to replace OEM 23966-36 and are essential for properly securing the flywheels. They are designed to fit 1936 to 1952 61 cubic inch Overhead Valve Big Twins, as well as 1937 to 1948 74 and 80 cubic inch Side Valve models. Colony hardware is the gold standard for restoration projects where accuracy and strength are paramount. This package includes two nuts, providing exactly what you need to get your crank assembly back together correctly. Whether you are restoring a Knucklehead or a Flathead, these nuts offer the peace of mind that comes with high-quality reproduction parts.