You want a Sram PC-850, 870, or 890. Note the big 8 on the lower right.
NOS Sram PC-48, 58, and 68 would work as well.
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'14 carbon Synapse - '12 CAAD 10 5 - '99 Gary Fisher Big Sur
Last edited by dtrain; 11-15-11 at 10:02 AM.