The M.4 features a comfortable interior fit and maximum ventilation with full chin bar, forehead and top vents. The M.4 takes a 281 SRV Shield and each helmet comes with a clear shield and Bell visor strip as standard equipment.
The M.4 incorporates Bell's redesigned face piece with recessed areas that allow for seamless radio integration and easy installation. Racers can also customize the fit of the M.4 by using Bell's Cheek Pad Inserts in 5mm, 10mm, 15mm and 20mm sizes to tighten the fit in the cheek area. The helmet is available in White and Rubberized Matte Black finish - the rubberized surface is more resistant to finger prints and smudges than traditional flat finishes. The M.4 is pre-drilled for use with head and neck restraint devices.
Bell Racing Auto Helmet Size Chart