Question: is ultegra worth it over 105?
Answer: There is no longer any real technological difference between 105 and Ultegra, and the only real difference is that Ultegra is a lighter groupset. That means we have 2 answers to the question of 105 versus Ultegra. If you want to make, a cash value judgment go for 105 if you want to save weight go for Ultegra.