The E-Thru thru axles allow you to ride your mountain bike on the Tacx roller trainers. These axles are only compatible with classic Tacx roller trainers. For direct drive roller trainers, axles replacing the standard thru axle can be purchased separately.
The E-Thru axle for M12x1.5 roller trainers, with medium thread, is suitable for hubs with 142 × 12 thru axle attachment, including Shimano SM-AX65, SM-AX75, SM-AX76 and SM-AX78.











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