Mavic Insta Drive 360 Aluminum Freehub Body Kit Description: This Mavic Insta Drive 360 Aluminum Freehub Body Kit fits Mavic Insta Drive rear hubs with dual ratchet rings found on select Mavic bike wheels. Features: Genuine Mavic replacement parts Freehub fit for Mavic Insta Drive 360 rear hubs with the dual racheting drive mechanism Compatible with 7-Speed Shimano HG style cassettes specifically designed for downhill/gravity racing Specifications: Material: Aluminum Cassette Compatibility: 7-Speed Shimano HG-style DH cassettes