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- the original Catalyst that set new standards for performance and durability
- two-piece construction
- 6-bolt and Centerlock mount
- aluminum alloy spider provides increased stiffness
- brake ring thickness is optimized and specific to each diameter
- 140 | 160 | 180 | 203 | 220 mm sizes
- 140 and 160 mm are UCI approved
- used by top road, mountain and cyclocross teams