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Trainer Caps allow thru-axle bikes to be used with most wind, magnetic or fluid cycling trainers.

Cold weather and short days are never far from a Minnesotan’s mind so Wolf Tooth engineers created Trainer Caps to reduce barriers to winter workouts. Non-drive side axle caps are joined by drive-side plugs that can be installed or removed without tools to make the prospect of hopping on the trainer a little more bearable.  


  • Wolf Tooth Rear Axles (not compatible with rear axles from other manufacturers)

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Tech Specs

Weight 12g
Material 6061-T6 aluminum
Tool Interface
Plug has O-ring retention – no tool required
Axle cap requires 8mm hex key
Designed Minneapolis, MN USA
Manufactured Minneapolis, MN USA