SRAM has unveiled “the first cyclocross specific cassette” with their new Powerdome X-Glide 1090.
It borrows the one-piece cog body and heavy machining work of the XX and new road cassette to help mud, grit and grime fall through easier. Milling is done between the gears on the tool steel cluster and on heat treated alloy backplate, which doubles as the 27t cog. Weight is a paltry 159g and, like the others, comes in with a hefty price tag of $335 (€300).
UPDATED: More & better pics added.
What makes it cyclocross specific is the tooth counts. It’s offered only as a close ratio 12-27, which is apparently what ‘cross superstars Jeremy Powers and Katie Compton have been asking for. Full tooth counts are 12-13-14-15-16-17-19-21-24-27, which means there’s no big jumps between gears. Available in December, another pic after the break…