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e*thirteen Helix R 107 BCD 4 Bolt Chainring 40t 11 12 Speed 107BCD Black MFPN=00.4021.136.000 RS3 race compound light Weight 653 RS3 race compound light and fast rolling Made in the USA Axle Size 10mm Axle Type Female Color Black Defined Color Black Front Axle 3 8" x 100mm Hub Drilling 28 Hub Type Front Hub Brake Compatibility Rim Brake Chainline is set by SRAM® Crank assembly Compatible with 4 bolt 107 BCD SRAM® cranks and Quarq® power meter cranks
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