SRAM NX Eagle 12-Speed Groupset with Cassette, Shifter, Derailleur and ChainSRAM NX Eagle 12 Speed Groupset with Cassette, Shifter, Derailleur and Chain SRAM's engineering team has been challenging the standards of the bike industry for a while now and to fill you in on recent changes, Sram has released a new Bottom Bracket Spindle Interface. DUB. Released only a few months ago, Dub has single handedly shifted everything we know about the mechanics of Bottom Brackets and spindle sizing. To no surprise, Sram has installed DUB