34-2106 S&S L84-99 crankpin assembly. +.003" for Harley-Davidson

When a standard crankpin just won't provide the right fit in your flywheels, this S&S +.003" oversize crankpin assembly is the solution. Sold as a set, it is designed for late 1981–1999 Big Twin models, excluding Twin Cams. With a 1.252-inch outer diameter, this pin is ideal for flywheels that have seen some wear and require a slightly larger diameter to maintain proper press-fit tension. The kit comes complete with the required crankpin nuts and a woodruff key. S&S manufactures these pins to incredibly tight tolerances, ensuring that your bottom end rebuild is as robust as possible. It’s a critical part for any mechanic looking to restore a Shovelhead or Evolution crank to factory-plus specifications.