I want to upgrade my bikes groupset to a Shimano 105. I currently have a "sealed cartridge, square taper, steel spindle, steel cups" bottom bracket. Will this be an issue upgrading to a new groupset? Will I need to get a press fit or just the Hollowtech II BB60?
More generally, are there other considerations when getting a new groupset? I currently have:
Bike: Marin Toscana CX (2010 or so) Crank: FSA Vero Front Derailleur: Shimano Sora Rear Derailleur: Shimano Tiagra Cassette: SRAM 11-26 9 Speed
I am up for basically ripping everything off and replacing it as needed, just need to know if there are any dealbreakers with compatibility.