Campagnolo Chorus HO Rear Derailleur 2x11 - short

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Description of Campagnolo Chorus HO Rear Derailleur 2x11 - short

Campagnolo Chorus rear derailleur RD18-CH1

Chorus™ 11-speed's shifting precision is comparable to its higher tier siblings Record™ and Super Record™. The design and geometry of the rear derailleur are exactly the same. The only difference lies in the materials used, which made it possible to keep a favorable price without lowering the performance levels. A groupset dedicated to competition like the Chorus™ 11-speed can't forego showing its true competitive spirit, and the carbon fibre front plate is the proof.
The HO version of the Chorus rear derailleur has been especially optimized for disc-brake frames with with 142 mm OLD. The derailleur mounting link and its design has been adapted to provide an easy mounting and dismounting of the thru axle or rear wheel. Furthermore the teeth of the upper pulley has been extended to guarantee precisely shifting also at high skew.

Features & Benefits

Rear derailleur fixing bolts in aluminum
With the same resistance and stiffness, the new two-part system makes it possible to reduce the weight by 53% compared to steel and 22% compared to titanium and prolongs the component life.

ULTRA-SHIFT™ exclusive geometry parallelogram
Maximum derailleur stiffness, fast shifting, precision, reduction of possible play.

The shape of the external components enables the rear derailleur to move according to a different angle and the new internal design keeps the chain nearer the cassette to ensure better power transmission, greater and more secure traction, a better chain/sprocket interface and greater durability of components subject to wear and tear.

The special chainring positioned inside the gear body acts on a rectangular section spring that allows the component to move along a trajectory that perfectly follows the curve of the sprockets, on both the 11-23 cassette and the new 11-29.

Carbon fiber front cage plate
Maximum rigidity, fast actuation and reduced friction.

Ultra-Shift™ System
Thanks to the Ultra-Shift™ patented system; you can move the chain simultaneously up 3 sprockets and then 5 down. Furthermore, the lever design allows for an ever lighter shifting, whilst maintaining the "click" sound featured on all Campagnolo® controls. The Ultra-Shift™ system is featured on 2011 Super Record™, Record™ and Chorus™ 11 Speed groupset ranges.

Compatibility note:
To ensure the functionality of the mechanical Super Record, Record and Chorus drivetrains, Campagnolo recommends to avoid the use of older components at shifting groups from 2015 on. A distinctive marking, a squared letter as in picture 2, helps recognizing actual shifting components. The letters of the corresponding parts (right Ergopower and rear derailleur / left Ergopower, derailleur, cups and crankset) should match.
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Fact Sheet of Campagnolo Chorus HO Rear Derailleur 2x11 - short

Product Name: Campagnolo Chorus HO Rear Derailleur 2x11 - short
Manufacturer: Campagnolo
Item Code: CAM329653
Year: 2018
Manufacturer item code: RD18-CH1
Material: aluminium, carbon
Weight: approx. 183 gram (manufacturer information)
Version: 2x11 speed
Cage length: short
Largest sprocket: 29 teeth
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