SRAM Rival Crank Arm Assembly - 165mm 12/13-Speed 8-Bolt Direct Mount DUB Spindle BLK E1 MFPN=1-MT-SVPRO-05T06 The asymmetric bolt pattern is

The asymmetric bolt pattern is designed to make sure you cannot install the ring in the wrong rotational orientation

shoulder strap

5-45mm (Deluxe

BindingPlate

SRAM Rival Crank Arm Assembly - 165mm 12/13-Speed 8-Bolt Direct Mount DUB Spindle BLK E1 MFPN=1-MT-SVPRO-05T06 The asymmetric bolt pattern isSRAM Rival Crank Arm Assembly 165mm 12 13 Speed 8 Bolt Direct Mount DUB Spindle Black E1. SRAM has taken aluminum to another level. Careful engineering has resulted in crankarms that optimize stiffness to weight ratio with material only where its needed8 bolt interface compatible with power and non power AXS spiders and integrated chainrings (Chainring and spider sold separately) DUB bottom bracket adds durability and simplicity (Bottom bracket sold