Bell 4Forty Air MIPS Helmet
Best versatile trail helmet for safety conscious mountain bikers
Designed for the dedicated trail rider, this helmet balances professional-grade protection with all-day comfort. It features a magnetic buckle for quick adjustments and a highly adjustable visor, making it a reliable choice for long days on the bike.
$139.00
More 4Forty options
Bell 4Forty Air MIPS Helmet
$107.22
Bell 4Forty Air Visor
$15.99
Bell 4Forty
$85.08
Bell 4Forty Air MIPS Helmet
$115.99
Bell 4Forty Mips MTB Helmet
$95.00
Bell 4Forty Helmet
$59.95
Bell 4Forty MIPS Helmet
$110.00
Bell 4Forty MIPS MTB Helmet
$124.95
Bell 4Forty/Hela Visor Screws
$109.00
Bell 4Forty Air MIPS Helmet
$164.95
Bell 4Forty Air MIPS Helmet
$164.95
Bell 4Forty Air Mips Helmet
$89.97
Bell 4Forty Mips Helmet
$87.46
Bell 4Forty MIPS Helmet
$79.90
Who it's for
- Safety-conscious trail riders seeking advanced protection without excessive bulk
- Riders who value convenience and quick transitions during their sessions
- Aggressive climbers who need maximum airflow to prevent overheating
Who should skip it
- Goggle users who prefer stowing their eyewear under the visor
- Long-distance cyclists who prioritize soft, thick cushioning for all-day comfort
- Mountain bikers with rounder head shapes requiring a wider internal fit
Performance breakdown
Impact Protection
MIPS integration provides essential rotational force management for technical trail riding.
Ventilation Efficiency
Optimized airflow channels keep riders cool during high-output climbing efforts.
Ease of Use
The magnetic Fidlock buckle makes securing the strap effortless with gloves.
Fit Customization
Float Fit system offers precise adjustments for a secure, personalized feel.
Eyewear Compatibility
Three-position visor easily accommodates goggles or sunglasses without interference.
Weight Management
Solid construction adds durability but feels slightly heavier than race-focused lids.
Key Specs
Weight
360 grams
Material
Polycarbonate shell
Safety Certification
US CPSC
Fit System
Float Fit
Buckle
Fidlock magnetic
Visor
3-position adjustable
Know before you buy
Still have a question?
Ask Metto anything about the Bell 4Forty Air MIPS Helmet before you decide.
