Fox Speedframe Pro Defy Helmet
Details
Engineered for serious trail riders, the Speedframe Pro Defy mountain bike helmet offers pro-level protection with a 5-star Virginia Tech rating, MIPS Air Node impact system, and dual-density Varizorb EPS for superior crash performance. A BOA Fit System ensures a secure, custom fit, while the breathable Ionic+ liner manages sweat, odor, and comfort. With an adjustable visor and built-in sunglass storage, it's a top choice for mountain bikers seeking safety, fit, and function.
- MIPS protection system reduces rotational motion by absorbing and redirecting forces otherwise transmitted to the brain
- BOA Fit System for micro-adjustability and comfort
- Integrated sunglass-specific storage solution
- Summer 2025 product
Specs
| Shell | EPS, nylon, PC, polyester, POM |
| Liner | MIPS, Ionic+ |
| Vents | Optimized venting with channeled, in-molded EPS provides efficient cooling |
| Certifications | Virginia Tech 5-Star helmet rating |
| Primary Use | Mountain biking |
| Manufacturer Warranty | 1 year limited |
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