Bell 4 Forty MIPS Bike Helmet

By Bell


Classic Mountain Biking Helmets

Off-Road Achiever 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.

Perfect Companion for Riding

4Forty is built also adjustable visor and integrated MIPS protection. Boasting the comfort, protection and broadly capable features of helmets costing twice as much, the 4Forty is a bantamweight, all-conditions, all-kinds-of-trail champion packing a heavyweight value.


  • Fusion in-mold polycarbonate shell
  • A lighter, more durable, and better-ventilated design
  • Multi-Directional Impact Protection System (MIPS)
  • Float Fit is a minimalist
  • Lightweight retention system with an easy-to-turn dial for adjustments
  • Google guide Adjustable Visor System
  • No-Twist Tri-Glides are quick-adjust fasteners
  • Sweat Guide pad design pulls moisture away from brow pad and away from eyewear
  • 15 vents ensure cooling comfort
  • The adjustable visor helps protect against glare, rain, and trail debris
  • Fit System: Float Fit
  • Ventilation: 15 Vents