Troy Lee Designs D4 Polyacrylite MIPS Shadow

55 - 56 cm
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Product details

The undisputed king of full-face helmets, the D4 range, is now extended with a polyacrylite model that packs the same safety and comfort features as the premium carbon and composite models into a price-conscious package. Details make the D4 the most sought-after full-face helmet in mountain biking, including the Mips C2 brain protection system, an air intake system for ventilation and an unrivalled anatomical fit.

  • Mips C2 Rotational Impact Brain Protection System
  • Advanced polyacrylite shell construction
  • Front air intake system with high air flow through the polymer centre and power grid side mesh
  • Collarbone protection system
  • Breakaway visor screws
  • Antibacterial padding
  • Quick-release contoured 3D cheek pads for an anatomically optimised fit.

Key specifications

Colour
Black
Bike helmet type
MTB helmet
Bike helmet size
S
Head circumference
55 - 56 cm
Helmet shape
Hybrid
Helmet features
Active ventilation, In-Mold, Interior padding, MIPS
Weight
1100 g

General information

Item number
54421669
Manufacturer
Troy Lee Designs
Category
Bike helmets
Manufacturer No.
174499002
Release date
5.2.2025

Colour

Colour
Black
Exact colour description
Black, The Shadow

Material

Material group
Foam material, Plastic
Material
Polyacrylic

Target group

Target group
Men, Women
Age group
Adults

Helmet properties

Bike helmet type
MTB helmet
Bike helmet size
S
Head circumference
55 - 56 cm
Helmet shape
Hybrid
Helmet features
Active ventilation, In-Mold, Interior padding, MIPS
Visor type
Fixed

Origin

Country of origin
China

Scope of delivery

Scope of delivery
Helm

Product dimensions

Weight
1100 g

Package dimensions

Length
38 cm
Width
31 cm
Height
31 cm
Weight
450 g

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Reviews & Ratings

Warranty score

How often does a product of this brand in the «Bike helmets» category have a defect within the first 24 months?

Source: Digitec Galaxus
  • 33.Smith
    0.8 %
  • 33.Sweet Protection
    0.8 %
  • 33.Troy Lee Designs
    0.8 %
  • 38.HJC
    1 %
  • 38.Kask
    1 %

Warranty case duration

How many working days on average does it take to process a warranty claim from when it arrives at the service centre until it’s back with the customer?

Source: Digitec Galaxus
  • 10.Kask
    3 days
  • 10.MET
    3 days
  • 10.Troy Lee Designs
    3 days
  • 13.Bell
    6 days
  • 13.Sweet Protection
    6 days

Return rate

How often is a product of this brand in the «Bike helmets» category returned?

Source: Digitec Galaxus
  • 35.Bell
    25.2 %
  • 35.iXS
    25.2 %
  • 37.Troy Lee Designs
    27.6 %
  • 38.MET
    28.5 %
  • 39.Frezzo
    29.1 %
Source: Digitec Galaxus