If you are seeking a replacement freehub body or looking to adapt your Tacx direct drive trainer to work with either an 11 speed Campagnolo, 11 speed Shimano/SRAM, or 12-speed SRAM XDR freehub body, this part is what you are looking for. To ensure the best shifting performance, pairing Campy cassettes with Campy drivetrains, Shimano with Shimano, and SRAM with SRAM is the way to go. For the best experience, it is recommended to keep the cassette on your trainer consistent with the one you a
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