Bell 4Forty Cliffhanger Mips MTB Mountain Cycling Helmet

The Bell 4Forty MTB helmet is designed for the needs of all-mountain riding with a full hardshell, MIPS integration and the comfortable Float Fit system. Bell’s 4Forty cycling helmet is the little brother to the Sixer model and is one of the most affordable MIPS equipped all-mountain helmets on the market right now.
With the 4Forty MIPS helmet, you’re getting 15 cooling vents, a sleek in-mould Polycarbonate shell as well as a useful sweat guide. No matter where the trail takes you, the 4Forty is ready.
Key Features:
- Weight: 324 grams (363 w/ MIPS)
- Vents: 15 vents
- Certifications: CPSC Bicycle, CE EN1078
- Construction: Fusion In-Mold Polycarbonate Shell
- Fit System: Float Fit (integrated with MIPS)
- GoggleGuide Adjustable Visor
- No-Twist Tri-Glides
- Sweat Guide
- Optional MIPS (integrated with fit system)
Off-Road Overachiever
All-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 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.
Occasionally, without notice, manufacturers change product design and/or specifications.
Bell 4Forty Helmet Size Guide
|
Size |
Cm |
Inches |
|
S |
52 – 56 |
20 ½” – 22” |
|
M |
55 – 59 |
21 5/8” – 23 ¼” |
|
L |
58 - 62 |
22 ¾” – 24 3/8” |
|
XL |
61 - 65 |
24” – 25 5/8” |
How to measure
To find the circumference of your head, place a tape measure in the centre of your forehead, wrap it around above your ears and around the back of your head. If there's a slight difference between two different sizes, always go for the tighter size.
Once you know the circumference of your head, select a size with a range that your head size fits within.

As well as an adjustable chin strap the majority of cycling helmets have some form of adjustment for size, usually in the form of a ratchet adjuster to tighten or loosen the headband or replaceable pads of different thicknesses.
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Bell 4Forty Cliffhanger Mips MTB Mountain Cycling Helmet
Available with supplier
- Usually dispatched in 6-8 working days“ Bought at a great price this helmet is everything you need.