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Bkool Thru-Axle

Bkool

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Bkools 12mm thru-axle is a sophisticated accessory that lets you use Bkool trainers with bicycles that have a 12-mm thru-axle system on the rear wheel.

This accessory has been designed to fit perfectly in the arms on the Bkool trainer (Bkool Pro and Bkool One), turning it into the perfect solution for using your trainer with this type of bicycle.

If your bicycle has the standard axle, simply use the skewer included in the Bkool trainer box. If, however, your bicycle has a system like the one in the image, youll need Bkools 12-mm thru-axle.

Bkool offers three different models for this accessory. Which one you need depends entirely on your bicycle (brand and model). To see which one you need, see the table. If you have any questions, contact us through the help section.

The 12x142x1mm (fine threaded) thru axle adapter will allow you to use your bike with any Bkool trainer.  Note: This kit is for 142x12 bikes only with a fine thread. Not compatible with 135x12, 148x12, or any other thru-axle system.  Frames come in 3 thread pitches: fine, medium, and course.  Please check with your frame manufacturer for the proper thru axle. 
The 12x142x1.5mm (medium threaded) thru axle adapter will allow you to use your bike with any Bkool trainer.  Note: This kit is for 142x12 bikes only with a medium thread. Not compatible with 135x12, 148x12, or any other thru-axle system.  Frames come in 3 thread pitches: fine, medium, and course.  Please check with your frame manufacturer for the proper thru axle. 
The 12x142x1.75mm (coarse threaded) thru axle adapter will allow you to use your bike with any Bkool trainer.  Note: This kit is for 142x12 bikes only with a coarse thread. Not compatible with 135x12, 148x12, or any other thru-axle system.  Frames come in 3 thread pitches: fine, medium, and course.  Please check with your frame manufacturer for the proper thru axle. 


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