Cassette Campagnolo chorus 12v 11-34d.

With the new Chorus groupset, perfectly compatible with the sprocket cassettes launched with the Super Record and Record 2x12 speed groupsets (11-29 and 11-32), a new sprocket cassette specification (11-34) is introduced, compatible only with the Chorus 12S drivetrain.
The new 11-34 sprocket cassette guarantees even greater versatility and more choice and autonomy for the rider in terms of usable ratios.