SRAM XX1 Eagle DUB 12 Speed Groupset - The SRAM XX1 Eagle 12 Speed Groupset is a convenient option for riders looking for a one box solution for your drivetrain upgrade. WIth a gear range greater than 500%, Eagle XX1 is a revolution to the cross country race bike. Accurately, and precisely shift every single time without worrying a bit thanks to the 1x technology that SRAM has perfected. This kit includes your chain, crank, cassette, shifter, and derailleur. Simply chose if you would like the gold decal group or the black decal group from the drop-down box above. Available in black or gold decalsDub configurationDoes not include bottom bracketBoost CrankTrigger ShifterWhat's Included in the kit?SRAM XX1 Eagle Silver 126 Links 12-SpdSRAM XX1 Eagle 170 32T XSync2 DMSRAM XX1 Eagle Cassette 10-50 12 SpeedSRAM XX1 Eagle Trigger Shifter 12spdSRAM XX1 Eagle Rear Derailleur 12 SpeedSRAM Eagle RD Chain Gap Adjustment GaugeBikeRadar took a gave the XX1 Group a 4.5 out of 5 stars!