513f5dd6_es___UC_Cyclery___La_Jolla__CA__Drivetrain
[Level] entry [Brand] Shimano [Components] Sora [Comments] sweet shifting, braking and reliability at a nice price [Drivetrain] 
compact double or triple chainring w/9 cogs
Buyer's Guide To Road Bicycles - UC Cyclery | La Jolla, CA
Drivetrain