Leatt Helmet MTB AllMtn 4.0 V26
What Is It?
The Leatt Helmet MTB AllMtn 4.0 V26 is a premium open-face mountain bike helmet designed for trail, all-mountain, enduro, and e-MTB riding. It combines lightweight construction with advanced impact protection, making it ideal for aggressive riders who want downhill-inspired safety without the bulk of a full-face helmet.
The helmet features Leatt's 360° Turbine Technology, an adjustable breakaway visor, excellent ventilation, and an integrated sunglasses dock for comfort and convenience on long rides. It is also certified for both downhill mountain biking and speed pedelec (e-bike) use.
Key Features
- Lightweight polymer shell construction
-
360° Turbine Technology to help reduce rotational and low-speed impact forces
- In-moulded EPS + EPO impact foam for superior energy absorption
- ASTM DH-certified protection in an open-face design
-
18 large ventilation ports for excellent airflow, even at low speeds
- Adjustable breakaway visor to reduce rotational forces during a crash
- Integrated sunglasses dock for secure eyewear storage
- Fidlock® magnetic buckle for easy one-handed operation
- Moisture-wicking, anti-odour, washable liner
- Adjustable fit system with Flat Lock strap divider
- Compatible with trail and enduro goggles
- Covered by Leatt's 3-year Helmet Replacement Program.
Specifications
| Specification |
Details |
| Brand |
Leatt |
| Model |
MTB AllMtn 4.0 V26 |
| Helmet Type |
Open-face MTB Helmet |
| Shell Material |
Lightweight Polymer |
| Impact Protection |
EPS + EPO Impact Foam |
| Safety Technology |
360° Turbine Technology |
| Ventilation |
18 Vents |
| Closure System |
Fidlock® Magnetic Buckle |
| Visor |
Adjustable Breakaway Visor |
| Liner |
Moisture-wicking, washable, anti-odour |
| Weight |
From approximately 430 g |
| Certifications |
ASTM F1952-15 (DH), CPSC 1203, EN1078, AS/NZS 2063, NTA 8776 |
| Sizes |
S (51–55 cm), M (55–59 cm), L (59–63 cm) |
Who Is It Suitable For?
- Trail riders
- All-mountain riders
- Enduro riders
- E-MTB riders
- Bike park riders preferring an open-face helmet
- Experienced recreational and competitive mountain bikers
- Riders seeking premium protection with excellent ventilation
Who Should Use It?
- Riders tackling technical singletrack and demanding trail networks
- Enduro riders wanting downhill-certified protection in a lightweight helmet
- E-MTB riders requiring a helmet certified for higher-speed electric mountain biking
- Cyclists spending long days on the trail who need excellent ventilation and comfort
- Riders who frequently switch between sunglasses and goggles
- Mountain bikers looking for a high-end helmet with advanced safety technology, premium fit, and all-day comfort for aggressive riding.Â
