Bell 4FORTY Air MIPS Helmet - S - Matte Black - AS-NZS�2063-2008 Standard YGroup_7033978978349 The four 18mm diameter pistons

The four 18mm diameter pistons of the Cura 4 provide the rider with huge amounts of stopping power

Cons: These are all about bar feel and breathability and don't offer much in terms of additional protection

Clutch style: Roller bearing clutch

Low-profile

6mm seat tubes which results in a lower overall weight

Bell 4FORTY Air MIPS Helmet - S - Matte Black - AS-NZS�2063-2008 Standard YGroup_7033978978349 The four 18mm diameter pistonsThe 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 arent just visibly rad but functionally significant for increased air ventilation, effective sweat management, and better goggle compatibility. Bell's Float Fit system, built in Sweat Guide, and Ionic+ padding ensure all day comfort, while Integrated Mips and extended hard shell coverage help you stay