SRAM Apex 1 Wide Crankset - 175mm 12-Speed 40t Direct Mount DUB Spindle Interface BLK D1SRAM Apex 1 Wide Crankset 175mm 12 Speed 40t Direct Mount DUB Spindle Interface Black D1. A single chainring with a wide range cassette is a wonderfully clean way to tackle so many disciplines and SRAM is a 1x leader. The Apex 1 Wide crankset features aluminum crankarms a light and stiff DUB spindle and elegant and secure direct mount X SYNC aluminum chainrings for flawless chain management. The wide chainline accommodates wider tires for any type of