Mountain Bike Air

BELL 4Forty Air MIPS Adult Mountain Bike Helmet (Fasthouse Matte Gray/Black)

BELL 4Forty Air MIPS Adult Mountain Bike Helmet (Fasthouse Matte Gray/Black)
BELL 4Forty Air MIPS Adult Mountain Bike Helmet (Fasthouse Matte Gray/Black)
BELL 4Forty Air MIPS Adult Mountain Bike Helmet (Fasthouse Matte Gray/Black)
BELL 4Forty Air MIPS Adult Mountain Bike Helmet (Fasthouse Matte Gray/Black)
BELL 4Forty Air MIPS Adult Mountain Bike Helmet (Fasthouse Matte Gray/Black)
BELL 4Forty Air MIPS Adult Mountain Bike Helmet (Fasthouse Matte Gray/Black)
BELL 4Forty Air MIPS Adult Mountain Bike Helmet (Fasthouse Matte Gray/Black)
BELL 4Forty Air MIPS Adult Mountain Bike Helmet (Fasthouse Matte Gray/Black)
BELL 4Forty Air MIPS Adult Mountain Bike Helmet (Fasthouse Matte Gray/Black)
BELL 4Forty Air MIPS Adult Mountain Bike Helmet (Fasthouse Matte Gray/Black)
BELL 4Forty Air MIPS Adult Mountain Bike Helmet (Fasthouse Matte Gray/Black)

BELL 4Forty Air MIPS Adult Mountain Bike Helmet (Fasthouse Matte Gray/Black)   BELL 4Forty Air MIPS Adult Mountain Bike Helmet (Fasthouse Matte Gray/Black)

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 FitT system, built-in Sweat GuideT, and Ionic+T padding ensures all-day comfort, while Mips Evolve® 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. BELL 4Forty Air MIPS Adult Mountain Bike Helmet (Fasthouse Matte Gray/Black) 7151295.

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. Float Fit, Fidlock, & No-Twist Tri-Glides: A minimalist, lightweight fit system with an easy-to-turn rubber overmoIded dial for adjustments (integrated with MIPS).

Fidlock is an easy-to-use magnetic buckle. This time-saving feature slides closed laterally for an effortless, secure fit.

With the No-Twist Tri-Glides, quickly-adjust fasteners that help keep straps flat and properly positioned. Sweat Guide & Ionic+ Padding: Sweat Guide pad design pulls moisture away from the brow pad and away from eyewear. With Iconic+, quick-drying interior padding helps manage sweat while fighting odor-causing. 3-Position Adjustable Visor, Goggle Gripper, and Eyewear Storage: 3-position adjustable visor allows for sun protection and integrates easily with goggles or glasses.

Rubber grip on the back of the helmet keeps your goggle strap in place. Easily stash your glasses using the integrated helmet notches.

Size Specifications: Small (52-56 cm), Medium (55-59 cm), and Large (58-62 cm) Sizes. Important: always take a measurement. Sizes and shapes can vary, even within an age range. Using a helmet that does not fit can be dangerous.

PowerSports Monkey is one of the largest PAC Powersports dealers in the United States. FOX, 509, Arai, Bell, Shoei, Alpinestars, Joe Rocket, HJC, ICON, LS2, Sena, GIVI, SIDI boots, LEATT are just some of our aftermarket specialties. Whether you ride On-Road, Off-Road, or On the Water let PowerSports Monkey make your ride better. Electrical parts are not refundable. This listing is currently undergoing maintenance, we apologise for any inconvenience caused.


BELL 4Forty Air MIPS Adult Mountain Bike Helmet (Fasthouse Matte Gray/Black)   BELL 4Forty Air MIPS Adult Mountain Bike Helmet (Fasthouse Matte Gray/Black)