Leatt MTB 4.0 All-Mountain Helmet - 2021

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sku: JS080620-84

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Leatt MTB 4.0 All-Mountain Helmet - 2021


Super ventilated full face helmet with best protection

Known for its good ventilation and comfort, the DBX 4.0 DH helmet is a general purpose MTB helmet. Equipped with 360° turbine technology, it offers excellent protection at a fair price.

This fully ASTM DH certified helmet is the ideal helmet for Enduro and Bikepark riders. Uphill, downhill, upside down, e-bike or downhill racer - the DBX 4.0 DH covers it all. The full-face design offers excellent ventilation and the practical fidlock buckle makes it extremely easy to use!

360° Turbine Technology

Leatt helmets feature 360° turbine technology that reduces impact forces by up to 30% and harmful rotational torque by up to 40%. The result is a reduced risk of head and spine injuries. All Leatt helmets are also compatible with a neck brace.


  • Optimal compatibility with a neckbrace
  • Removable ventilation cover of the mouthpiece
  • Visor with predetermined breaking point for more safety
  • Compatible with drinking systems (with optional hands-free kit)


  • DH certified Lightweight Polymer Compound shell in two sizes
  • Brain injury reduction technology
  • Reduces forces associated with concussion
  • Maximized ventilation with 22 vents
  • Removable mouth piece ventilation cover | Fidlock magnetic closure system
  • Dri-Lex® moisture wicking, breathable, antiodor and washable inner liner
  • Optimal neck brace compatibility
  • Visor with breakaway function for rotational reduction in a crash
  • In-molded EPS + EPO impact foam for superior energy absorption
  • 360° Turbine Technology
  • Reduced peak brain acceleration by up to 30% at impact speeds associated with concussion
  • Reduces peak brain rotational acceleration by up to 40%
  • Weight: From 850g (1.87 lbs)
  • Certified and tested: AS/NZS 2063:2008, ASTM F1952–10, EN1078, CPSC 1203
  • Sizing #S (55-56cm – 21 5⁄8 - 22”), #M (57-58cm – 22 ½ - 22 ¾”), #L (59-60cm – 23 ¼ - 23 5⁄8”), #XL (61-62cm – 24 – 24 ½”)