Full-face helmets for bikes and MTB raven

What is the full-face helmet for MTB used for

The full-face helmet covers the head and has a chin bar that also protects the chin and lower part of the face. In MTB it is used where speed and the risk of forward falls are higher, such as in technical descents, bike parks, enduro, and freeride. Compared to an open helmet it offers more coverage, but generally weighs more and ventilates less, so for trail rides with more pedaling many cyclists choose lightweight models or those with a removable chin bar.

The declared weight varies greatly from one model to another, from about 700 g for lightweight full-face helmets to over 1,100 g for those designed for downhill. Always check the data in the product sheet.

Fixed or removable chin bar

Fixed chin bar

It is integrated into the shell and cannot be detached. It always guarantees face protection and, as a rule, a simpler and more robust structure. It is the typical solution for helmets designed for downhill, bike parks, and demanding enduro.

Removable chin bar

It detaches from the helmet and transforms it into an open helmet. For example, in the full-face version the MET Parachute MCR weighs 840 g (size M) and without the chin bar 455 g, with a magnetic attachment. It is useful if you alternate pedaled climbs, where a lightweight helmet ventilates better, with descents where full protection is needed. Without the chin bar the helmet does not protect the face: it must be worn as a full-face helmet on technical descent sections.

What is MIPS and when it matters

MIPS (Multi-directional Impact Protection System) is a low-friction layer placed between the shell and the inner padding. In the event of an oblique impact it allows the head to slide a few millimeters relative to the helmet, with the aim of reducing rotational forces transmitted to the brain. The benefits are demonstrated in laboratory tests, but the topic is still debated and European standards do not measure rotational protection. Not all full-face helmets have MIPS and some manufacturers use equivalent systems with proprietary names: check the product sheet to see what is indicated.

How to choose the size

The size is chosen based on head circumference, not age or body build:

1. Measure the head with a tailor's tape measure, about one centimeter above the eyebrows and at the widest point of the back of the head.
2. Compare the measurement in centimeters with the manufacturer's size chart: ranges vary from brand to brand (for example, in some models size S covers 54-56 cm and size M 56-58 cm).
3. Try the helmet with the chin strap closed: it must fit uniformly, without pressure points, and not move when moving the head forward and backward.
4. If the model has cheek pads with different thicknesses, choose the one that holds the helmet in place without being too tight.

Also check that the helmet is compatible with the mask you use and, if you wear one, with the protective neck brace.

Certifications: what to check in the sheet

Bicycle helmets generally comply with the European standard EN 1078. For downhill use many full-face helmets also declare the ASTM F1952 (downhill) standard, which includes tests at higher impact speeds and a check of the chin bar, or ASTM F2032 (BMX). Some bike parks and races require or recommend a specific standard: check the regulations of the place where you ride.

Masks, protection and accessories

To complete the equipment you can choose an open bike helmet for trail use, a mask compatible with the shape of the helmet, MTB protection gear and helmet accessories, such as visors and spare parts. You can also explore the brand pages for MET and KASK.

Frequently asked questions about full-face helmets

Full-face or open helmet for MTB?

It depends on the use. The open helmet is lighter and more ventilated, suitable for cross country and trail. The full-face helmet also protects the face and is the choice for downhill, bike parks, and demanding enduro. With a removable chin bar you can alternate between the two configurations.

Is a full-face helmet suitable for enduro?

Yes, if ventilation and weight are adequate for pedaling. For enduro there are lighter full-face models and models with a removable chin bar. Check weight, air vents, and certifications in the product sheet.

When should a full-face helmet be replaced?

After a significant impact, even if no damage is visible, because the internal foam that absorbs the impact may be compromised. Replace it also if it is damaged or if it exceeds the recommended usage period from the manufacturer.