2026 Fox Proframe RS Heatstack Helmet

Lightweight, downhill-certified, full-face helmet

The Proframe RS Heatstack Helmet takes the lightweight breathability of the Proframe and elevates it to the next level of safety and performance. Featuring the all-new Mips® Integra Split protection system, which combines a dual-density foam - for high and low-speed impacts - and a Low Friction Layer between the two layers designed to reduce rotational forces in a crash that would otherwise be transmitted to the brain. The BOA® Fit System allows for a precise and adjustable fit in the pro-level, downhill-certified helmet.

• BOA® fit system for class leading fit and security
• Mips® Integra Split impact protection system combines an EPP liner with the EPS layer and is designed to reduce rotational forces in a crash
• 3 position adjustable visor compatible with goggles
• Removable under visor GoPro mount included
• Increased ventilation and decreased surface contact area improves cooling
• Ionic+ anti-microbial liner and cheek pads to optimize fit
• FIDLOCK® magnetic closure
• Meets the ASTM-F1952 Downhill MTB certification standard

Free UK delivery on all orders over £70.

Super easy returns process. Read our returns policy.

Free personalised bike setup for all bikes collected from our store.