Adults

Equipped with pro-level technology but designed with the privateer in mind, the Bell 4Forty Air MIPS is the first choice for your next trail helmet.
Trail Life
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 but functionally significant for increased air ventilation, effective sweat management, and better goggle compatibility. Our Float Fit system, built-in Sweat Guide, and Ionic+ padding ensures all-day comfort, while Integrated MIPS 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. [Availability, certification, color, and pricing may vary per region. If outside of the USA, please check with your authorized local dealer for more information.]
- INTEGRATED MIPS—Integrated MIPS (Multi-Directional Impact Protection System) is designed to reduce rotational forces that can result from certain impacts. By integrating the MIPS slip plane into the retention system, we are able to reduce complexity and weight for a compact, better ventilated helmet that fits more closely to the head.
- FLOAT FIT—A minimalist, lightweight fit system with an easy-to-turn rubber overmolded dial for adjustments (integrated with MIPS).
- FIDLOCK BUCKLE—Fidlock is an easy-to-use magnetic buckle. This time saving feature slides closed laterally for an effortless, secure fit.
- NO-TWIST TRI-GLIDES—Quick-adjust fasteners that help keep straps flat and properly positioned
- SWEAT GUIDE—Sweat Guide pad design pulls moisture away from the brow pad and away from eyewear.
- IONIC+ PADDING—Quick-drying interior padding helps manage sweat while fighting odor-causing bacteria.
- 3-POSITION ADJUSTABLE VISOR—3-position adjustable visor allows for sun protection and integrates easily with goggles or glasses.
- GOGGLE GRIPPER—Rubber grip on the back of the helmet keeps your goggle strap in place.
- EYEWEAR STORAGE—Easily stash your glasses using the integrated helmet notches.
Complies with the US CPSC Safety Standard for Bicycle Helmet for Persons Age 5 and Older

Sketchy rock drops, mach speed alpine forest tunnels, slippery river rocks — trail riding can mean a lot of different things. Our premium trail helmet, the Sixer Mips, is designed to handle it all.
The last thing you want to be thinking about in the middle of a long backcountry ride is your helmet. It should be well-ventilated. It should protect your head. And it should fit so well that you don’t know it’s there. The Sixer Mips takes to the trail with our Integrated Mips technology, resulting in a sleeker, closer-to-the-head fit that combines with our Float Fit system and proprietary Sweat Guide to ensure unprecedented comfort in a helmet. Goggle compatibility, complete with a strap gripper at the rear of the helmet, adjustable visor height, integrated camera/light mount, and a full hard shell round out the package. We’ve sweated every detail on the Sixer so that out on the trail, the only sweating you’ll have to worry about is your own. Availability, certification, color, and pricing may vary per region. If outside of the USA, please check with your authorized local dealer for more information.
CONSTRUCTION:
- FUSION IN-MOLD POLYCARBONATE SHELL
- PROGRESSIVE LAYERING
- EXPOSED POLYCARBONATE ROLL CAGE
VISOR:
- 4-POSITION ADJUSTABLE VISOR
VENTILATION:
- DUAL FLOW VENTILATION
FIT SYSTEM:
- FLOAT FIT RACE
PRODUCT WEIGHT:
- CPSC: 395G (SIZE M)|CE: 380G (SIZE M)
CERTIFICATION:
- COMPLIES WITH THE US CPSC SAFETY STANDARD FOR BICYCLE HELMET FOR PERSONS AGE 5 AND OLDER

The Super Air is the first trail helmet to offer Flex Spherical + MIPS, making it our most advanced trail helmet. Period. This combination of outstanding safety, optimized ventilation and extreme lightness brings epic achievements within reach — on any trail, in any terrain. When you’re ready to step up, upgrade by adding the optional chin bar. See you on the trail!
- 18 vents, 4 brow ports
- Overbrow ventilation features intake ports on the brow of the helmet to usher in cool air and push it through the air-channel matrix for full-head ventilation
- Compliance: CPSC bicycle
- Flex spherical + MIPS - comprehensive energy management - flex spherical enhances our ability to address high-speed impacts, low-speed impacts, as well as rotational impacts. Think of it as comprehensive protection, with the added bonus of being able to design better helmet ventilation.
- Construction: Fusion in-mold polycarbonate shell - a process pioneered by Bell bonds the helmet's outer shell to the EPS foam liner to create a sturdier helmet.
- Progressive layering: the process of engineering a helmet liner with variable EPS foam densities to better manage the transfer of energies after some impacts
- Fit System: Float fit - a minimalist, lightweight fit system with an easy-to-turn rubber overmolded dial for adjustments (integrated with MIPS)
- Interior: Sweat guide pad design pulls moisture away from the brow pad and away from eyewear

Built on our legendary Full-9 platform, the Full-9 Fusion is our no-compromise full-face helmet for riders who hold nothing back. With a premium fiberglass shell, a wide field of view, Overbrow Ventilation intakes, a plush interior, and MIPS technology, this helmet delivers world-class quality, fit and features. It doesn’t matter if you are chasing the clock on a downhill run, or sending big gaps at your favorite bike park, if you are a rider who loves to shuttle to the top and then shred all the way down, this helmet is built for you.
Specs
- MIPS (Multi-directional Impact Protection System) - a leading slip-plane technology designed to reduce rotational forces that can result from certain impacts.
- Safety: Breakaway screws
- Construction: Fiberglass shell
- Flying bridge visor: originally developed for moto use, this visor's side-mounted screws are easy to adjust, even while wearing gloves
- Number of vents: 10 helmet vents, 3 brow ports
- Interior/liner type: X-static padding - quick-drying materials, woven with real silver fibers, inhibit growth of odor-causing bacteria and fungi
- Ventilation Type: Overbrow ventilation features intake ports on the brow of the helmet to usher in cool air and push it through the air-channel matrix for full-head ventilation
- Weight 1080 grams (size M)
Sizes
- X-Small = 51–53 cm
- Small = 53–55 cm
- Medium = 55–57 cm
- Large = 57–59 cm
- X-Large = 59–61 cm
- XX-Large = 61–63 cm
Certification
Complies with the US CPSC Safety Standard for Bicycle Helmet for Persons Age 5 and Older

With Spherical Technology powered by MIPS and our pioneering 2-click removable chin bar, the legacy continues with the Super Air R in an all-mountain package.
A New Standard
As pioneers of removable chin bar technology, we have a legacy to uphold and overcome. We designed the Super Air R from the ground up to push the boundaries of performance and versatility-starting with Spherical Technology. Spherical Technology's Ball-and-Socket design, powered by MIPS, helps redirect impact forces away from the brain by allowing the outer liner to rotate around the inner liner during a crash. Throw in superior ventilation, a total weight that is 22%, or 144 grams, lighter than its predecessor, and an easy 2-click removable chin bar-and you've got a true all-mountain performer. [Availability, certification, color, and pricing may vary per region. If outside of the USA, please check with your authorized local dealer for more information.]
- SPHERICAL TECHNOLOGY—Spherical Technology's Ball-and-Socket design, powered by MIPS, helps redirect impact forces away from the brain by allowing the outer liner to rotate around the inner liner during a crash.
- MIPS—MIPS (Multi-directional Impact Protection System) is a leading slip-plane technology inside the helmet designed to help reduce rotational forces that can result from certain impacts.
- REMOVABLE CHIN BAR—Removable protective chin bar designed for trail riding adaptability. Attaches with a simple 2-step connection process—no tools required. [Warning: All chin bars have limits, and serious injury or death can occur. Read owner's manual carefully before using your helmet.]
- INTEGRATED BREAKAWAY CAMERA MOUNT—Seamless camera mount, requiring no zip ties or tape, is engineered to break away from the helmet upon impact to help reduce the risk of injury.
- FLOAT FIT—A minimalist, lightweight fit system with an easy-to-turn rubber overmolded dial for adjustments (integrated with MIPS).
- ADJUSTABLE VISOR—Adjustable visor allows for sun protection and easy goggle storage.
- OVERBROW VENTILATION—Overbrow Ventilation features intake ports on the brow of the helmet to usher in cool air and push it through the air-channel matrix for full-head ventilation.
- SWEAT GUIDE—Sweat Guide pad design pulls moisture away from the brow pad and eyewear.
- GOGGLE GRIPPER—Rubber grip on the back of the helmet keeps your goggle strap in place.
Complies with the US CPSC Safety Standard for Bicycle Helmet for Persons Age 5 and Older
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