Description
SRAM RED XG 1290 Cassette 12 Speed 10 30t For XDR Driver Body Rainbow E1 MFPN=RW CC RT G1 923 model SMC Core rails CrMo model SMC Core rails CrMo top microfiber color black gray size M L weight 360g The SRAM DUB bottom bracket series has a simple job— to connect crankarms and protect the smooth long lasting application of power to the drivetrain