Zipp ZR1 End Caps Front QR Rim Brake Package-12/Count All of these fibers have

All of these fibers have strengths and weaknesses

DUB technology for strong stiff lightweight performance

Defined Color Black Rings 32 Spindle Interface Type SRAM DUB Chainring BCD Direct Mount SRAM Color Black Chainline/Hub Compatibility 141/148 Boost Hubs Drivetrain Speeds 11 Drivetrain Speeds 12 Number of Chainrings Chain Retaining Single Crank Intended Use Mountain BB Included No Pedal Spindle 9/16" Crank Length (mm) 165

Measuring your power and keeping tabs on your data just got more precise

12-spline 23mm OD tool fittings

Zipp ZR1 End Caps Front QR Rim Brake Package-12/Count All of these fibers haveZR1 end caps SRAM Model ID: HU SPP A0 TECH SPECS Misc WHEEL AXLE END CAP SET FRONT RIM BRAKE QR ZR1 HUBS