e*thirteen UL Ultralight Direct Mount Guidering for Boost Chainlines - 34t 10/11/12-Speed XCX Compatible Black. The e*thirteen UL (Ultralight) Guiderings are beautiful as well as incredibly light. Compatible with 1011and 12-speed drivetrains.Narrow-wide to
e*thirteen UL Ultralight Direct Mount Guidering for Boost Chainlines – 34t 10/11/12-Speed XCX Compatible Black. The e*thirteen UL (Ultralight) Guiderings are beautiful as well as incredibly light. Compatible with 1011and 12-speed drivetrains.
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