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Bell 4Forty MIPS-Equipped Bike Helmet


SKU 4-BE7101800

All-mountain value — optional integrated MIPS, Float Fit, Sweat Guide, adjustable visor, full hard shell — the 4Forty is ready for anything the trail throws your way. The only thing missing is a triple digit price tag.

Mountain biking is a demanding sport – compromises and shortcuts when it comes to gear are never a good idea. The 4Forty 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 the option of integrated MIPS protection. Boasting the comfort, protection and capable features of helmets costing twice as much, the 4Forty is an all-conditions, all-kinds of trail champion.


  • Float Fit™
  • Fusion In-Mold Polycarbonate Shell
  • Goggleguide™ Adjustable Visor System
  • MIPS®️-Equipped
  • No-Twist Tri-Glides™
  • Sweat Guide™ Padding


  • Weight: 380 Grams
  • Vents: 15
  • Certification:CE EN1078, CPSC Bicycle
Size CM IN
Small 52-56 20-22
Medium 55-59 21.6-23.2
Large 58-62 22.8-24.4
X-Large 61-65 24-25.6