I have 105 Shimano Crankset in my Road bike. What makes Ultegra better over 105? Just 100g lighter and looks better? Does it really improves the performance and how? I need to know the effectiveness before I upgrade.
I have 52/39T front and 12-25 rear. What combination I am suppose to use for flat road?
I have 52/39T front and 12-25 rear. What combination I am suppose to use for flat road?