Technologies
MTB bicycle helmets
MTB helmets: reinforced protection, reliable support and comfort on all terrains
In mountain biking, each outing exposes you to technical and unpredictable terrain. Mountain bike helmets Cairn are designed to offer extensive protection, reliable support and comfort adapted to the most committed practices, whether uphill, downhill or on uneven routes. All are compliant and certified according to the CE EN 1078 standard, the European reference certification for bicycle helmets, with advanced technologies offered at the best quality/price ratio.
Construction in-mold : the lightest for the most challenging terrain
Mountain bike helmets Cairn are built in in-mold : the outer polycarbonate shell and the inner absorbent foam (EPS: Expanded Polystyrene, the same foam used in protective packaging) are fused into a single inseparable piece during manufacturing. This technique produces the lightest helmets on the market, a decisive advantage on long outings, while ensuring optimal distribution of shock energy over the entire surface in the event of an impact.
Technology MIPS®: the most relevant protection for mountain biking
In mountain biking, falls are rarely head-on: you slip, you go sideways, you fall at an angle. It is precisely this type of oblique impact that technology MIPS® is designed to manage.
The effectiveness of the helmet during a bicycle impact is a fact that no longer needs to be proven. To go even further, Cairn and MIPS® have together developed a helmet that is even safer for your head. Accident statistics show that, most often, falls and impacts produce an angular impact (less than 90°) on the head. These so-called “rotational” shocks can cause severe lesions in the brain. The system MIPS® (Multi-directional Impact Protection System) is designed to absorb this rotational force to reduce its impact on the brain.
Occipital Protect Zone : protected where falls happen
Mountain biking requires reinforced coverage at the back of the head. TheOccipital Protect Zone structurally reinforces this critical area, where the body most often falls, backwards or sideways, during downhill falls. Targeted protection, directly integrated into the shape of the helmet.
Aero Flow ventilation: continuous air, even at low speed
In mountain biking, the effort is intense and the speed is often low, especially when going uphill. The Aero Flow system consists of channels carved into the interior foam of the helmet, which circulate air naturally from the front to the rear outlet, for a regulated temperature at all times. Even on long technical climbs, where natural ventilation is not enough, your head stays cool.
Anti-insect net: comfort, without compromising on ventilation
On the trails in summer, the front ventilation can allow midges and flying insects to pass through: a real nuisance during exercise. The anti-insect net, cleverly positioned on the front vents, offers effective protection against flies, mosquitoes and other insects, without compromising air circulation inside the helmet.
FIDLOCK® and fit system 360°: stability and speed of adjustment
On uneven terrain, the helmet must remain perfectly in place. The 360° fit system allows millimetric adjustment of the tightening via a dial, for reliable support whatever the body shape. The magnetic loop FIDLOCK® allows you to attach or detach the helmet with a simple gesture, even with trail gloves, even with one hand, without wasting time during technical stops.
ECOSOFT & ECODRY lining: comfort and eco-responsible commitment
Cairn integrates two innovations to reduce the environmental impact of its helmets. ECOSOFT makes it possible to manufacture the straps from woven fibers from recycled plastic bottles. ECODRY uses biodegradable bamboo fibers for the internal lining: 40% more absorbent than cotton fibers. The liners are removable, antimicrobial and washable, for lasting hygiene season after season.
Choose your mountain bike helmet according to your practice
-
Cross-Country (XC): priority on performance and endurance.
For XC practice, the MTB helmet must above all be forgotten: maximum ventilation is essential to regulate the temperature during long climbs, while the ultra light weight and minimalist construction in-mold help limit fatigue over time. We also favor functional simplicity (removable visor, quick adjustment) and lasting thermal comfort thanks to breathable foams. In this perspective, the Prism XTR II helmet Cairn stands out as an ideal choice with its numerous ventilations and its excellent lightness/comfort ratio, while the Cairn Lava constitutes a slightly more covering alternative while remaining very ventilation oriented. -
Trail: the perfect balance between protection and versatility.
When trail riding, the MTB helmet must adapt to varied terrain, alternating technical climbs and descents. The key criteria are extensive protection (especially at the occiput and temples), a balance between ventilation and safety, as well as stable support on irregular trails. The integration of security technology such as MIPS becomes a real plus for reducing forces in the event of an impact. The Rift headset MIPS Cairn perfectly meets these requirements by offering an excellent compromise between comfort, protection and versatility, ideal for riders looking for a helmet that can do it all. -
All-mountain / Enduro: maximum commitment and reinforced safety.
For committed practices, the MTB helmet must offer maximum coverage and advanced protection. Here we are looking for reinforced protection of sensitive areas (occiput, temples), impeccable support even at high speed, as well as advanced safety technologies such as MIPS to better manage multidirectional impacts. The design must also be adapted to technical terrain, with mask compatibility and a more covering visor. The Edge helmet MIPS Cairn perfectly embodies this approach with a high level of protection and a design designed for fast descents and the most demanding conditions.
An effective mountain bike helmet combines advanced protection, support and comfort depending on your level of commitment. Cairn offers you this combination at affordable prices, from €34.99 to €169.99.
Explore other practices
Do you also ride on road or gravel? Discover the road and gravel helmets Cairn. For your daily trips in the city, the urban bike helmets are more suitable. Also equip yourself with the sports glasses Cairn and find them children's bicycle helmets to equip the whole family.



























