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. Designed to meet the needs of all-mountain riders and enduro racers, the increased ventilation and decreased surface contact of the helmet keep you cool on long rides, while the Ionic+ and anti-microbial liner and multi-sized cheek pads provide optimized comfort and fit. The updated BOA® Fit System offers micro-adjustability providing class-leading fit and security. The chinstrap utilizes a FIDLOCK magnetic closure system for easy-open and close, even with gloves. The 3-position adjustable visor with lock down screw is compatible with goggles. Those looking to capture every sweet run will appreciate the removable, under-visor GoPro mount on the Fox Proframe RS mountain bike 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
• Meets the ASTM‐F1952 Downhill MTB certification standard

• Sizes: small, medium, and large (see size guide for measurements)

• BOA® dial: micro adjustments - counterclockwise to loosen, clockwise to tighten - allows for a precisely dialed fit. Adjust while wearing the helmet.
• Back cradle: four points of adjustment move the cradle up or down your head to ensure the best fit possible.
• Cheek pads: two sets of cheek pads are included with the helmet - a preinstalled thin pad set and an optional thick pad set for a more snug fit.

For care instructions, see our Helmet Care Guide

Note: Avoid exposure to aerosol sprays like bug repellent and sunscreens as they can cause your helmet's finish to peel

Materials: 27% ABS, 26% EPS, 20% polycarbonate, 16% polyurethane, 11% Pa