Bell 4Forty MIPS MTB Helmet
Best versatile protection for dedicated mountain bikers seeking all day comfort.
A reliable, trail-ready performer that balances essential safety features with all-day comfort. It offers extended rear coverage and a highly adjustable fit, making it a smart, no-nonsense choice for riders who prioritize protection and value on the mountain.
$124.95
at
Cambria Bike
More 4Forty options
Who it's for
- Safety-conscious trail riders seeking reliable brain protection technology
- Enduro enthusiasts who frequently switch between goggles and sunglasses
- High-intensity cyclists who struggle with sweat dripping onto their lenses
Who should skip it
- Riders in tropical climates who prioritize maximum cooling over coverage
- Cyclists with unique facial proportions requiring highly customizable strap positioning
- Detail-oriented buyers who prefer a fully wrapped lower shell
Performance breakdown
Impact Protection
MIPS Evolve technology provides industry-standard rotational force mitigation for trail safety.
Rear Coverage
Extended shell design offers significant peace of mind on technical descents.
Fit Customization
Float Fit system allows for precise, quick adjustments on the fly.
Ventilation Efficiency
Solid airflow for moderate rides, though it runs warmer than race-specific lids.
Eyewear Integration
Adjustable visor accommodates goggles and glasses seamlessly without obstruction.
Weight Profile
Sturdy construction adds some heft compared to ultra-lightweight carbon fiber alternatives.
Key Specs
Impact Management
MIPS Evolve
Circumference
55-59 cm
Construction
Fusion In-Mold Polycarbonate Shell
Visor
Adjustable
Fit System
Float Fit
Weight
380g
Certification
US CPSC Safety Standard
Know before you buy
Still have a question?
Ask Metto anything about the Bell 4Forty MIPS MTB Helmet before you decide.