Leatt All Mtn 4.0 MTB Helmet 2025

From Leatt, the MTB All-Mtn 4.0 Helmet is built for mountain biking and e-bike riding where demanding trails call for considered protection and comfort. Designed to balance a clean, modern look with technical safety features, it’s made for riders who want confidence on long climbs, fast descents and everything in between.

A lightweight polymer shell is paired with in-moulded EPS + EP0 impact foam for energy absorption, while 360° Turbine Technology is engineered to reduce peak brain acceleration by up to 30% at impact speeds associated with concussion and reduce peak brain rotational acceleration by up to 40%. For day-long wear, ventilation is maximised with 18 vents, optimised for riding and effective even at low speeds. Practical details include a sunglasses dock port for secure storage, a Fidlock magnetic closure system, and an adjustable visor with a breakaway function to help reduce rotational impact forces.

Key features

• Lightweight polymer shell
• 360° Turbine Technology
• In-moulded EPS + EP0 impact foam for energy absorption
• Fidlock magnetic closure system
• Sunglasses dock port for easy, secure storage
• Adjustable visor with breakaway function for rotational impact force reduction
• 18 vents for maximised ventilation, effective even at low speeds
• Moisture-wicking, breathable, anti-odour and washable inner liner

Specifications

• Certified and tested: AS/NZS 2063:2008, EN1078, CPSC 1203, ASTM F1952-15
• Weight: from 430g (0.95 lbs)

Size Guide:

• S: 51-55CM
• M: 55-59CM
• L: 59-63CM