SRAM X-Sync Road Direct Mount Chainring Rival - 42t 12-Speed 8-Bolt Direct Mount BLK MFPN=00.5318.039.000 4-Bolt faceplate design for easy

4-Bolt faceplate design for easy installation

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The smart battery management system reliably protects the battery cells from overload

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SRAM X-Sync Road Direct Mount Chainring Rival - 42t 12-Speed 8-Bolt Direct Mount BLK MFPN=00.5318.039.000 4-Bolt faceplate design for easySRAM X Sync Road Direct Mount Chainring for Rival 42t 12 Speed 8 Bolt Direct Mount Black. SRAM X Sync Road Direct Mount Chainrings for Rival drivetrains feature a wide tooth narrow tooth design to provides maximum chain control. SRAM X SYNC wide tooth narrow tooth chainring technology provides maximum chain control Laser etched chainring finish is more durable X Range gearing technology gives you more range and a smoother gear progression so youre