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Part No.: 2392-S10-Size-Color
Bell M.4 Helmet, Snell SA2010 Approved
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The M.4 is perfect for the driver who wears glasses. Features the largest eyeport of the Bell line, with adjustable forehead vents to help reduce fogging. The M.4 replaces the M2, with the same extra-large eye opening. The M.4 is also in extended sizes. If you haven't been able to find a small enough or large enough helmet, chances are you will fit somewhere in the XXSmall to XXXXLarge sizing! Factory predrilled for HANS® anchors (sold separately). Available in white or matte black. Snell SA2010 rated.
The SA2010 rating is the latest Snell Foundation rating for automotive racing helmets. This helmet rating has been developed to provide the best safety protection for auto racing drivers who are restrained in their vehicles. An SA-rated helmet may not meet DOT specifications for street use, such as on motorcycles.
SIZING: Helmets should fit as snug as possible without causing discomfort. Measure head circumference around the largest part of the head approximately one inch above the eyebrows and just above the ears. If a one or two layer Nomex hood will be worn with the helmet, it should be worn when measuring head circumference. If a hood is not available, add about 1/4 inch to the circumference measurement for a single layer hood and 1/2 inch for a double layer hood.
Bell M.4 Sizing Chart
21 1/4 to 21 5/8
22 3/4 to 23 1/8
23 1/2 to 23 7/8
25 1/2 to 25 7/8
26 1/4 to 26 3/8
The M.4 takes the Bell 281SRV Helmet Shield (Part No. 2312-002). One clear shield with matching visor strip (white for white helmets, black for matte black) is included with the helmet.