Bell 4Forty Air MIPS

The 4Forty Air MIPS is equipped with pro-level features designed with the privateer in mind. With a sleek new shell and 3-position visor, the benefits aren't just visibly rad—they also improve air ventilation, manage sweat, and enhance goggle compatibility.

Our Float Fit™ system, built-in Sweat Guide™, and Ionic+™ padding ensure all-day comfort, while Mips Evolve® and extended hard-shell coverage help you stay committed in all shred conditions. Upgrades like eyewear ports, a Fidlock® magnetic buckle, and premium straps make the 4Forty Air MIPS your go-to for daily trail riding.

Key Features

• MIPS® Evolve: Reduces rotational forces from certain impacts, with a compact, well-ventilated design that fits closely to the head.

• Float Fit™: Minimalist, lightweight fit system with an easy-to-turn rubber overmolded dial for adjustments.

• Fidlock® Magnetic Buckle: Easy-to-use magnetic buckle for a secure fit.

• No-Twist Tri-Glides™: Quick-adjust fasteners to keep straps flat and properly positioned.

• Sweat Guide™: Directs moisture away from the brow pad and eyewear.

• Ionic+™ Padding: Quick-drying interior padding that fights odor-causing bacteria.

• 3-Position Adjustable Visor: Provides sun protection and integrates easily with goggles or glasses.

• Goggle Gripper: Rubber grip on the back of the helmet keeps goggle straps in place.

• Eyewear Storage: Integrated helmet notches to stash glasses easily.

Size Guide

• Small: 52–56 cm

• Medium: 55–59 cm

• Large: 58–62 cm

• X-Large: 61–65 cm