If I'm not mistaken the 7700 & 7800 front and rear mech were almost identical. Biggest changes were the crankset and STi levers.
I have a 7800 GS, brand new in it's box if you are interested.
@adman started
London Fixed Gear and Single-Speed is a community of predominantly fixed gear and single-speed cyclists in and around London, UK.
This site is supported almost exclusively by donations. Please consider donating a small amount regularly.
If I'm not mistaken the 7700 & 7800 front and rear mech were almost identical. Biggest changes were the crankset and STi levers.
I have a 7800 GS, brand new in it's box if you are interested.