Direct Drive XD XDR Freehub For Hammer H2 H3 Trainers, SRAM XD XDR Compatible With Cassette Adapter Included, Slick Upgrade For Smart Trainers, Easy Install, Keeps Your Training Solid And Consistent

Direct Drive XD/XDR Upgrade for Hammer, H2, H3 Trainers
✔️ XD driver fits Saris H3 and Hammer/H2; includes Cassette adapter

This direct-drive freehub is designed for Saris direct-drive trainers like H3, H2, and Hammer, and includes a cassette adapter to run SRAM XD/XDR cassettes. It’s a handy upgrade to keep indoor training solid and consistent.

✅ XD driver works with Saris H3 and CycleOps Hammer/H2 trainers
✅ Includes cassette adapter for SRAM XD compatibility
✅ SRAM XDR compatibility requires spacer; 12-speed setups not usable on H3, Hammer, H2
✅ Free hub adapter kit to fit SRAM XD/XDR cassettes on Saris direct-drive trainers

💡 What is a direct-drive trainer freehub and why upgrade to XD/XDR?

This handy upgrade makes more gear options available and improves consistency during hard workouts. - XD/XDR compatibility expands cassette options for direct-drive Saris trainers - Improves power transfer and cadence stability during hard intervals - Lets SRAM RED and Force eTap AXS 12-speed groups work with Saris direct-drive - Includes cassette adapter for XD/XDR cassettes ✝️