Bell 4Forty Air Mips
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" |
Product Information
Product Information
Shipping & Returns
Shipping & Returns

















Bell 4Forty Air Mips
Bell 4Forty Air Mips
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" |
Original: $29.99
-70%$29.99
$9.00Product Information
Product Information
Shipping & Returns
Shipping & Returns
Description
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" |








