Bontrager Lithos helmet review

Hefty but comfy headgear

Our rating 
4.0 out of 5 star rating 4.0
GBP £100.00 RRP | USD $150.00
Bontrager's Lithos helmet is a good performer, but is heavier than some of the competition

Our review

A top performing trail lid with good ventilation and fit, but it's on the heavy side
Buy if, You've got a sturdy neck and want a helmet that ticks most boxes very well
Pros: Comfy, well-ventilated and very adjustable
Cons: Weighty, especially if you're mounting anything on it
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The first thing you notice when you plonk the latest version of Bontrager’s Lithos lid on your head is its weight.


At 440g it’s no featherweight (it’s roughly 100g heavier than a Troy Lee Designs A1), but it is very comfortable, and that makes a big difference, especially on longer rides. Plenty of vents and good internal channeling help to give things a lighter, airier feel, and we never had any issues with overheating during testing.

Getting the fit dialled is easy thanks to the ‘Headmaster’ retention cradle with its indexed adjuster wheel. This system also offers three tilt positions to help get things feeling just right.

We did find ourselves cranking things up a little tighter than normal to compensate for the extra weight though, because we found it could cause the Lithos to shift forwards when hitting big compressions or on really bumpy trails.


While Bontrager’s clip-in camera/light mount is a nice touch, adding even more weight to the helmet means you’ll need to add even more tension to the retention cradle, which you’ll really start to notice on big days in the saddle.

Product Specifications


Name Lithos helmet
Brand Bontrager

Weight (g) 440
Vented Yes