SRAM X0 Left Arm with Power Meter Spindle, 165mm, Black Nuts & Washers 132447-Q0-L

132447-Q0-L

150914-Q0-L

Manufacturer Part Number: 17289

176890-Q0-L

and slightly angled hexagonal knobs on the sides

SRAM X0 Left Arm with Power Meter Spindle, 165mm, Black Nuts & Washers 132447-Q0-LProvides riders with accurate, live power data delivery housed in SRAM's most advanced aluminum crankset Utilizes what is called DUB PWR, a unique design that elegantly houses Quarqs reliable and accurate power measurement inside the DUB crank spindle itself Measuring left side power to calculate total watts, its subtle, lightweight, compatible with any chainring setup, and boasts unbeatable battery life It is also compatible with the Flight Attendant