The chainset is the Shimano 105 11 speed compact. The 34-50 chainrings combined with the Ultegra 11-34 cassette provide a great gearing range for top end speed for faster touring but a lower gearing when needed.
The Shimano 105 front and Ultegra rear derailleur deliver smooth and reliable shifting across the 22 gears.
We can upgrade the transmission of your bike to full Ultegra if preferred (circa £260 upgrade cost).
We can also fit a Tiagra triple for lower gearing (reduces cost by £220)
Dura Ace bar-end shifters are also an option if this is preferred to STI's.