SRAM RED Crank Arm Assembly - 165mm, 12-Speed, 8-Bolt Direct Mount, DUB Spindle Interface, Natural Carbon, E1 Tools Other Manufacturer Part Number: B-139-BK

Manufacturer Part Number: B-139-BK

125646-Q0-L

124651-Q0-L

PK2158 TL7083

helmet mount with 2200 model

SRAM RED Crank Arm Assembly - 165mm, 12-Speed, 8-Bolt Direct Mount, DUB Spindle Interface, Natural Carbon, E1 Tools Other Manufacturer Part Number: B-139-BKWhen SRAM found ways to make their lightest and stiffest crank even lighter, they went for it. A new optimized layup drops 29g from the hollow carbon arms. Plus they're offering more crankarm lengths than ever before to ensure this crank works for you. Carbon crank arms are 29g lighter than previous generation 8 bolt interface compatible with power and non power AXS spiders and integrated chainrings (Chainrings sold separately) Product Specifics