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SRAM Red Crankset BB30 11-Speed 172.5 50-34 No BB C2

Top-of-the-line road crankset with carefully shaped Exogram hollow carbon fiber arms for high stiffness-to-weight ratio and sturdy chainrings optimized for the Yaw front derailleur. 7075 aluminum X-GlideR chainrings are stiff for reliable shifting and power transfer Graphics match SRAM Red eTap electronic components Hidden chainring bolt design saves weight and contributes to a sleek look Item Specifications Color Black Spindle Interface Type BB30/PF30 Pedal Spindle 9/16" Chainring BCD 110 Rings 50/34 BB Included No Crank Intended Use Road Defined Color Black Spindle Diameter 30 Chainrings Included Yes Crank Length (mm) 172.5 Drivetrain Speeds 11 Number of Chainrings Double