The most popular road groupset worldwide is now 11 speed the new 5800 series 105 features technology that has trickled down from shimanos high level dura ace and ultegra groups 105 now gains the light yet positive shift action found in dura ace and ultegra levers theres also a new compact shape thats borrowed from the levers of shimanos more expensive groups the lever can be adjusted to accommodate different hand sizes via a 10mm screw type reach adjustment the new 5800 front derailleur