S&S Supreme rod assembly for anything including all racing applications with bore size less than 3 5/16 inches where stock diameter wristpins are used (equipped with 17 roller bearing alloy cages). Connecting rod assemblies include front and rear rods, crankpin, crankpin nuts, rod roller bearings, 17 roler bearing alloy cages and crankpin key, all prefit and ready to install. Fits 55 inch and 61 inch engines. Sold as set. Call 1-800-366-3464 for price.