For many, the ultimate in technology, equipped on TdeF winners' bikes to great effect!
Decades of hard earned respect are embodied in this tried, tested & trusted Groupset.
We've tested this to great effect in recent seasons - it's absolutely flawless!
The mainstay of road bikes for years, an all new lever design & jump to 11 speed has strengthened it even further.
For many cyclists, 105 is all you'll ever need, redesigned in 2011 to mirror it's pricier big brothers it hasn't looked back since!
A recent upgrade to 10 speed brings trusty Tiagra up to speed and makes a very affordable entry-level option.