Bell 4Forty MIPS MTB Helmet

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59.00 30.99 discount
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  • Free tracked delivery
  • Trustpilot review 9.4 out of 52.503 reviews

Pros & Cons

  • This helmet has a high wearing comfort.
  • This helmet gives a very good protection in case of a fall.
  • This helmet has no mount where you can mount a light or camera.
Read more on what our customers have to say about this product


Brand Bell
Extra protection Yes MIPS
Ventilation ★★★
MTB Helmet Type Trail / Enduro
Weight 350 grams


As mountain biker you know like none other how demanding your sport is. To meet those demands, Bell developed the 4Forty MIPS. The 4Forty is a comfortable helmet with a snug fit. The 15 vents provide an air current and the Sweat-Guide padding drains moisture. In addition, the helmet’s fit is easy to adjust thanks to the Float-Fit closure. This Float-Fit closure is integrated into the MIPS crash protection. MIPS is a system built into the helmet’s cage and reduces the impact on the head in a crash significantly. This decreases the chance of head injuries in a crash.

Looking for a helmet that’s comfortable, protecting and affordable? Then look no further than the Bell 4Forty MIPS!

Find out more on our Blog

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22 reviews

26 reviews

1 review
Extra protection Yes MIPS No No Yes MIPS
Helmet Size S / M / L / XL / 52 - 55 cm XS / S / M / L / 48 - 51cm S / M / L / 54 - 56cm S / M / L / XL / 51 - 55 cm
Model Year 2019 / 2020 2017 / 2018 / 2019 2017 / 2019 2017 / 2018 / 2019
Ventilation ★★★ ★☆☆ ★☆☆ ★★★
MTB Helmet Type Trail / Enduro Full Face Full Face Trail / Enduro
Colour Grey / Black / Red Brown / Yellow / Grey / White / Black / Red Blue / Grey / Black Matte Blue Lime / Matte Dark Red / Matte Olive / Citron
59.00 53.00 50.00 67.00
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8.9 / 10 Average from 22 reviews | Write a review

8.9 / 10

22 reviews


  • Price (2)
  • Fit (2)
  • value (2)
  • Good quality build (1)


  • Seaty accross forehead (1)
  • Only two positions for visor (1)
  • Medium ventilation (1)
  • Can slip whilst riding unless quite tight (1)

Most recent reviews

8 / 10

John, 11 September 2019

Good quality

This is my first MIPs helmet so still getting used to the MIPS fit. Build quality is very good. Only reason I haven't given higher score is I find the front of the helmet that goes across your forehead gets very sweaty and has a tendency to push down onto my sunnies. I appreciate this is a very strong part of the helmet designed for safety but find it hot compared to other helmets I've had.


  • Good quality build
  • Good fit


  • Seaty accross forehead

8 / 10

Jan, 1 August 2019

Good value entry to MIPS

Nice helmet. It's a bit tricky to get the fit perfect so that the helmet sits in the same position whilst riding. Nice and comfortable of medium weight. The visor can be raised or lowered but essentially only has the the extreme positions. It's also easy for the visor to look crooked. Probably not the coolest for ventilation but as I swapped to eMTB at the same time it's much less of an issue and pushing the peak up helps direct more air in. Like the availability of replacement padding although couldn't find the correct matching colour but that's minor.


  • Price
  • Moveable visor
  • Style
  • Colour


  • Only two positions for visor
  • Medium ventilation
  • Can slip whilst riding unless quite tight

10 / 10

Charlie, 27 May 2019

Brilliant, perfect fit, top performance for a budget price.


  • Comfortable
  • Great protection
  • Absolute bargain


  • None

6 / 10

Ian, 20 May 2019

Nice fit but

Love the style of the helmet but dissapoited in the finish it has scratched already only worn twice.

10 / 10

Chris, 14 May 2019


Light, comfortable, MIPS......what else is there to say? Great purchase, good price and swift delivery...….good job Mantel :D


  • Light
  • Comfy
  • MIPS
  • Sweat system


  • maybe a little warm