Like this site? Help us to make it better.

Upgrading Chainset & Front Mech

I'm thinking about gradually upgrading my current transmission..
Currently on a Giant SCR 3 (2007) with Tiagra Rear Mec, Sora triple front and a generic crankset...
I'd like to upgrade to 105, probably starting with the chainset and front mech. Are there any compatability issues I should be aware of? And will I need to change the bottom bracket too?
Grateful for any advice....

If you're new please join in and if you have questions pop them below and the forum regulars will answer as best we can.

Latest Comments