The last argument in favour of the front mech is now dead. Srams XG-1299 Eagle Cassette is a 12 speed cassette with a gear range of 500%
- the same as a double with considerable weight savings. Crafted with X-Dome architecture, the Sram XG-1299 Eagle is one of the strongest cassettes on the market & its open design sheds mud easier to ensure smooth shifts & improve component wear. New shifting characteristics have been added to the XG-1299 Cassette to ensure consistent feel across the 12 gears including both up & down shifting, all while boosting chain rentention. Description by Mark, Rutland Cycling Web Team.