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Bell 4Forty MIPS

All-mountain value - Integrated MIPS, Float Fit, Sweat Guide, adjustable visor, full hard shell — the 4Forty is ready for anything the trail throws your way.
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Size Guide

Mountain biking is a demanding sport — compromises and shortcuts when it comes to gear are never a good idea. The 4Forty MIPS is built to withstand the rigors of a trail-riding life; with generous ventilation, the comfort of Float Fit and built-in Sweat Guide, extended rear coverage, a full hard shell, adjustable visor, and Integrated MIPS protection. Boasting the comfort, protection, and broadly capable features of helmets costing twice as much, the 4Forty MIPS is a bantamweight, all-conditions, all-kinds-of-trail champion packing a heavyweight value.


  • Float fit - A minimalist, lightweight fit system with an easy to turn rubber over molded dial for adjustments.
  • Adjustable visor
  • Integrated MIPS system designed to reduce rotational forces that can result from certain impacts.
  • Sweat guide pad to pull moisture away from the brow pad and away from eye wear.


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