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Fox Racing Union BOA Shoe

Fox Racing Union BOA Shoe
  • Color: Black
  • Color: Black
  • Color: Black
  • Color: Black
  • Color: Brown
  • Color: Grey
  • Color: Red
Color: Black
Size: Select size
Please select options Unavailable



The all-new Union BOA® Shoes are set to take your mountain bike adventures to new, more adjustable, and sendier levels of "yew!" Get more power to the pedal and customize your fit to perfection with the dual BOA® Li2 system featured in these trail-ready shoes. Built with robust features including a molded cap design to protect against rock strikes, the Union mountain bike shoes handles the rigors of trail abuse with ease.

With a lightweight and precise fit, the low-profile, custom-tuned midsole ratchets up your pedal grip and feel, giving you more comfort while you shred. Power to the pedal is optimized care of the molded internal stiffening plate, but it's not stiffness at the expense of off-bike comfort. Should you have to hike-a-bike around that downed tree, you're all good.

The sole is designed using the Ultratac™ rubber compound, with the engineered tread pattern providing best-in-class grip and durability, while the 2-bolt cleat system is compatible with most major clipless pedal suppliers. Versatile and with understated style, Union BOA® Clipless MTB Shoes were born to rip, transitioning from sweet single track to your post-ride tailgate brews with ease.


Ultratac™ outsole balances grip and durability

Dual Boa® Li2 system provides on-the-fly micro-adjustability and improved power transfer to the pedals through a secure and formed fit

Molded toe cap and reinforced toe for protection against rock strikes

One-piece upper for a consistent, precise fit

Weather-resistant welded construction protects from the elements

Molded internal heel counter locks in heel for a premium, no-slip fit

Tuned EVA midsole balances cushion, for all day riding comfort, with on-bike pedal efficiency

High density textured print in high wear areas for improved durability

Exchangeable arch support options to suit riders with lower to higher foot arches

Lightweight, reinforced nylon shank adds stiffness to efficiency transfer power to the pedal

2-bolt cleat system is compatible with most major pedal suppliers

"Power and Control" guide on bottom of shoe to help select cleat placement

Materials: TPU, Eva, rubber

Weight: 443g/15.6 ounces (size 9)


Shoes have a standard fit that's true to size, take your normal shoe size

Sizing is uniform across all models: Union Boa®, Union and Union Flat

Shoes comes with Low-Arch arch support installed

Optional High-Arch arch support is included to adapt the fit to rider preference

Part Numbers

Option MPN Store SKU
Black / 41.5 29353-00141.5 UNI204718305
Black / 42 29353-00142 UNI192714392
Black / 43 29353-00143 UNI191316173
Black / 43.5 29353-00143.5 UNI204893785
Black / 44 29353-00144 UNI197628634
Black / 44.5 29353-00144.5 UNI204765655
Black / 45 29353-00145 UNI197664185
Black / 45.5 29353-00145.5 UNI204491015
Black / 46 29353-00146 UNI197475386
Brown / 45 29353-55345 UNI194993005
Brown / 46 29353-55346 UNI197331796
Grey / 41.5 29353-00641.5 UNI194472095
Grey / 42 29353-00642 UNI182611792
Grey / 42.5 29353-00642.5 UNI194783825
Grey / 43 29353-00643 UNI184192463
Grey / 43.5 29353-00643.5 UNI193118445
Grey / 44 29353-00644 UNI188682714
Grey / 44.5 29353-00644.5 UNI197910555
Grey / 45 29353-00645 UNI189739395
Grey / 46 29353-00646 UNI181577886