SRAM Rival 22 Crankset - 175mm 11-Speed 50/34t 110 BCD GXP SpindleFeaturing forged aluminum arms and SRAM's X Glide chainrings, this crankset is hits the sweet spot between weight, durability and performance. Chainrings are compatible with SRAM 11 speed chains and YAW front derailleurs Chainring spider is removable Q factor for GXP cranks is 149. 6mm, Q factor for BB30 is 147. 4mm Product Specifics Drivetrain Speeds: 11 Rings: 34 50 Rings: 50 34 Defined Color: Black Spindle Interface Type: TruVativ GXP Spindle