Campagnolo Super Record HO 12sp Rear DerailleurCampagnolo's Super Record HO Rear Mech is the heart and soul of the Record 11-Speed drivetrain. Super Record components have always gone hand-in-hand with competitions and wins, and still today represents for professional racers the certainty of fast and extremely precise shifting, even under load. You don't have to be a pro to take advantage of Campagnolo's best performance features, the fun is for all.Ultra-efficientThe revised shape of the external components of the Super Record HO allows it to move efficiently to give maximum performance at any angle. The design of the cage keeps the chain closer to the cassette to ensure better power transfer, a more positive drive, whilst perfectly following the curve of the sprockets. This better chain/sprocket interface also gives greater durability of components.Disc Brake Frame SpecificThis HO (hydraulically optimised) version is specifically designed for use on disc brake frames that feature the wider 12x142mm rear dropout spacing. It features an adapted mounting link for easier thru axle removal and larger teeth on the upper pulley for precise shifting at more extreme chainlines.Features:Aluminium fixing boltCarbon fibre upper and lower bodyCarbon fibre cage plateCarbon fibre parallelogramExclusive Ultra-Shift™ geometryCeramic ball bearingsPulley cage aluminium fixing boltsSpeed: 11-SpeedBuy Campagnolo Components from Chain Reaction Cycles, the World's Largest Online Bike Store.