513f5dd6_es___UC_Cyclery___La_Jolla__CA__Drivetrain
[Level] race [Brand] Shimano [Components] Ultegra [Comments] almost Dura-Ace function and finish [Drivetrain] 
compact double or triple chainring w/10 cogs
Buyer's Guide To Road Bicycles - UC Cyclery | La Jolla, CA
Drivetrain