SHIMANO 7700 TT SG 9-S Chainring 55T

This is an exceptionally rare Dura-Ace 7700 SG 55-42 9S series chainring, uniquely marked with SHIMANO.

This chainring is very rare and was only released for professional athletes like Lance Armstrong—he rode with this type of chainring. I haven’t been able to find anything else about these chainrings online; they’re extremely rare and truly a special addition to any collection. We currently have only one 55T and one 54T left.

Specifications