Hyperglide+ offers fast and shockless shifting||Silent and stable operation in all gears||Low-profile design||Extra wide range 12-speed drivetrain||Decreased rear derailleur and chain tension in low gear||Hyperglide+ offers fast and shockless shifting||Silent and stable operation in all gears||Low-profile design||Extra wide range 12-speed drivetrain||Decreased rear derailleur and chain tension in low gear||New bumper added to rear derailleur pulley cage||Bigger 13T pulleys for increased drivtrain efficiencyview less