TRAIL-TESTED COMFORT - PRO-LEVEL FEATURES

The Bell 4Forty Air Mips is a trail rider's dream—engineered with advanced protection, all-day comfort, and sleek functionality to keep you shredding with confidence. Designed for privateers and enthusiasts alike, this helmet is your next go-to for conquering trails.

Trail-Ready - Advanced Features - Lightweight

Engineered for Performance

Crafted with a Fusion In-Mold polycarbonate shell and Mips® Evolve technology, the Bell 4Forty Air Mips ensures lightweight impact protection while reducing rotational forces. This compact, ventilated helmet prioritizes your safety without compromising style or fit.

All-Day Comfort - Sweat Control - Precision Fit

Comfort You Can Count On

Stay comfortable and focused with the Float Fit™ system and Fidlock® magnetic buckle, offering quick, secure adjustments. Paired with Ionic+™ antimicrobial padding and the Sweat Guide™, you’ll ride longer without irritation or discomfort.

Goggles & Glasses Compatible - Adjustable Visor - Secure Straps

Trail-Ready Features

The 3-position adjustable visor, eyewear storage ports, and goggle gripper deliver unbeatable functionality for any trail condition. No-Twist Tri-Glides™ keep your straps flat and properly positioned, so you can stay in control at every turn.

Premium Details - Durable Design - Enhanced Ventilation

Designed to Excel

Weighing only 360g (Size M), this helmet is packed with premium upgrades like extended hard-shell coverage, superior ventilation, and an ergonomic design, ensuring it’s as ready for the trail as you are.

Feature	Details
Impact Management	Mips® Evolve
Construction	Fusion In-Mold polycarbonate shell
Visor	3-Position adjustable
Fit System	Float Fit™ with Fidlock® Magnetic Buckle
Weight	360g (Size M)
Certification	Complies with US CPSC Safety Standard

Size Guide

Size	CM	IN	HAT SIZE (IN)
S	52-56	20 1/2"– 22"	6 1/2"– 7"
M	55-59	21 5/8"– 23 1/4"	6 7/8"– 7 3/8"
L	58-62	22 3/4"– 24 3/8"	7 1/4"– 7 3/4"
XL	61-65	24"– 25 5/8"	7 5/8"– 8 1/8"

Bell

Bell Sanction 2 DLX MIPS - Full Face Helmet

Bell Sanction 2 - Full Face Helmet

Bell 4Forty Air MIPS - MTB Helmet

Bell Local Helmet

Bell Lil Ripper Kids Helmet