The 12x142x1mm thru axle adapter will allow you to use your bike with any Bkool trainer. Note: This kit is for 142x12 bikes only. Not compatible with 135x12, 148x12, or any other thru-axle system. Frames come in 3 thread pitches: fine, medium, and coarse. Please check with your frame manufacturer for the proper thru axle.
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