23974-873 L81-99 crankpin. +.001"

When you are rebuilding a bottom end, precision is everything. This JIMS crankpin is an oversize version, measuring .001 inches over the standard diameter, which features a 1.2495-inch bearing surface. It is designed for late 1981 to 1999 Big Twin models, excluding Twin Cams. The 3-hole oil design ensures optimal lubrication to the rod bearings, which is critical for engine longevity and performance. For a proper installation, JIMS recommends using their 978252 crankpin nuts and 517951 woodruff keys, which are equivalent to OEM 11218. This is a professional-grade component for serious engine builders looking to restore perfect tolerances to an Evolution-era flywheel assembly. Sold individually.