Bottom Bracket: BB30/ PF30. Weight: 697.4g (BB30 172.5mm 53x39 BB not included). Compatibility: SRAM RED 22 & Force 22 Yaw™ Front Derailleurs, SRAM RED 22 & PC1170 chains. X-GlideR Chainrings - The chainrings are designed for an optimized shifting performance with the Yaw front derailleur.
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