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Features and Information

• Cranksets come with SG-X chainrings
• SG-X outer rings have steel chain pick-up tabs riveted to the inner face for positive upshifts
• Ultegra FC-6500 and 105 FC-5502 have tunnel-forged hollow arms
• Splined spindle hole requires use of BB-6500 or BB-5500 bottom bracket
• FC-6503 Features tunnel-forged hollow arms and one-key release
• Tandem features silver arms and chainrings, 74-130 BCD, and includes 40-tooth timing rings