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Wolf Tooth Axle Trainer Caps Silver. 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 Minnesotans 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.Compatibility: Wolf Tooth Rear Axles (not compatible with rear axles from other manufacturers)
Plug has O-ring retention – no tool required
