Vintage Shimano Ultegra TRIPLE FC-6503 Crankset 172.5 130BCD Octalink Nice Logos
Markings and logos: outer faces feature Shimano Ultegra logos and Octalink graphics; rear faces are stamped “Shimano Japan VIA”, “FC-6503” and “FC-6500/6503” along with forge codes and “172.5” for arm length.