Value investors, look no further! You've found what you're seeking with the Campagnolo Chorus 11 speed Ultra Shift cassette. This cassette is technologically identical to the Super Record 11 and Record 11 cassettes. It has every last bit of Ultra Shift technology built into it. You get the same cog tooth synchronization, cog tooth shaping, and optimized tooth spacing. In short, your shifting will be every bit as sweet with Chorus 11 as it'll be with Super Record 11. The only difference with the Chorus 11 cassette is this: All 11 cogs are made with nickel-chrome coated steel. The Super Record 11 cassette has 6 Ti cogs and the Record 11 cassette has 3 Ti cogs. With Chorus 11, you get no Ti cogs, which gives you a net weight of 241g -- 56g more than Super Record, and 35g more than Record. While this is a slight weight premium, nickel-chrome coated steel is the toughest material Campagnolo uses for its cassettes. This means the Chorus 11 is Campy's most durable cassette. The Campagnolo Chorus 11 cassette comes with a lightweight alloy lockring. It's available in 5 ratios: 11-23, 11-25, 12-25, 12-27, and 12-29. The 11-23 includes- 11,12,13,14,15,16,17,18,19,21,23The 11-25 includes- 11,12,13,14,15,16,17,19,21,23,25The 12-25 includes- 12,13,14,15,16,17,18,19,21,23,25The 12-27 includes- 12,13,14,15,16,17,19,21,23,25,27 The 12-29 includes- 12,13,14,15,16,17,19,21,23,26,29The actual weights of the Campagnolo Chorus 11 Cassette: 11-23 is 228g. 11-25 is 241g. 12-25 is 255g. 12-27 is 272g. 12-29 is 292g.