SRAM Omnium GXP Track Crankset: 1-piece forged 7050-TV alloy arm/spider design with 24mm-steel (GXP) integrated drive-side spindle. GXP bottom bracket with external bearing cups: supplied with steel bearing 68mm English cups (ceramic, 70mm Italian, or BB86 adapter cups available separately if needed).

5mm thick, 7075-T6 black anodized chainring (1/8" chain compatible), alloy chainring bolts, and alloy M15 self-extractor. 710g @ 170mm with 115g BB cupset