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Fox Racing
Union BOA Mountain Bike Shoe

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Size Chart


Why We Like The Fox Racing Union BOA Mountain Bike Shoe

Speed and control on the bike begin at the pedals, and the Fox Racing Union BOA Mountain Bike Shoe creates the perfect blend of performance, comfort, and fit to ensure a rock-solid connection to our pedals. Featuring Fox Racing's Ultratrac rubber outsole and a 2-bolt compatible cleat plate, the Union provides tons of pedal control and exceptional grip to keep us firmly planted on the pedals when the track gets gnarly. A lightweight seamless upper conforms to our foot for unrivaled comfort, while the dual BOA® closure system and customizable arch options let us dial in our ultimate fit.


  • Lightweight shoe built for exceptional control on gnarly terrain
  • One-piece seamless upper is lightweight and breathable
  • Dual BOA® Li2 closure provides a precise, locked-in fit
  • Ultratrac rubber outsole offers extreme grip and durability
  • EVA midsole helps absorb shock from big drops and massive rock gardens
  • 2-bolt compatible cleat plate works with most mountain bike cleats
  • Item #FXRZ4F9
Upper Material
dual BOA® Li2 system
Ultratac rubber
Cleat Compatibility
Claimed Weight
[single, size 12.5] 1lb 2oz
downhill, enduro, trail
Manufacturer Warranty
1 year

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