The Fox Union BOA® Shoes are engineered to elevate your mountain biking performance with power, precision, and all-day comfort. Featuring a dual BOA® Li2 Fit System for a customized, micro-adjustable fit, these clipless shoes deliver maximum efficiency and control on every climb and descent. Built tough with reinforced protection and a stiff internal shank, the Fox Union BOA® is ready to tackle technical trails and rowdy descents with confidence.
Key Features
- Dual BOA® Li2 Fit System: Micro-adjustable dials offer a secure, fine-tuned fit for power and comfort.
- 2-bolt cleat compatibility: Works with all major MTB clipless pedal systems.
- Molded toe cap: Shields against rock strikes and trail debris.
- Durable one-piece upper: Reinforced structure for abrasion resistance and longevity.
- Ultratac™ rubber outsole: Provides confident traction for hike-a-bike sections and off-bike grip.
- Stiff internal midsole plate: Efficiently transfers power from foot to pedal.
- Low-profile design: Keeps a secure feel on technical terrain with understated, trail-ready style.
Specs
| Intended Use | Trail / enduro / all-mountain clipless riding |
| Upper | Reinforced one-piece synthetic with welded overlays |
| Closure | Dual BOA® Li2 micro-adjustable dials |
| Outsole | Ultratac™ rubber with 2-bolt cleat mount |
| Midsole | Nylon composite internal plate for pedaling stiffness |
| Toe/Heel Protection | Molded toe and heel reinforcement |
| Cleat Compatibility | 2-bolt SPD-style cleats (Shimano, Crankbrothers, Time, etc.) |
| Weight | ~480 g (per shoe, size 42) |
Fit tip: Runs true to size with a performance-oriented fit. For riders who prefer a slightly roomier toe box or thicker socks, consider sizing up ½ EU size.