Description
Specialized S Works Tarmac SL7 Dura Ace Di2 Road Bike 2021, 54cm model katofs77al Three Point Fit: Comfort and performance Three Point Fit: Comfort and performance that holds lenses in precise optical alignment Durability and all day comfort of O Matter™ and lightweight Deore XT RD M8100 Rear Derailleur Offers fast and shockless shifting thanks to HYPERGLIDE+ technology The low profile design includes a bumper added to the derailleur pulley cage Shimano Shadow RD+ technology reduces chain slap and creates a quieter drivetrain Includes large 13t pulley Drivetrain is silent in all gear positions with decreased rear derailleur and chain tension in low gear Medium cage derailleur for 12 speed drivetrain