Troy Lee Designs D4 Polyacrylite MIPS Shadow

55 - 56 cm
Ratings
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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

Bike helmet type
MTB helmet
Colour
Black
Helmet features
Active ventilation, In-Mold, Interior padding, MIPS
Head circumference
55 - 56 cm
Bike helmet size
S
Item number
54421669

General information

Manufacturer
Troy Lee Designs
Category
Bike helmets
Manufacturer no.
174499002
Release date
5.2.2025
Sales rank in Category Bike helmets
395 of 5376

Colour

Colour
Black
Exact colour description
Black

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
Fastener
Lace fastening
Visor type
Fixed

Origin

Country of origin
China

Voluntary climate contribution

CO₂-Emission
Climate contribution

Product dimensions

Weight
1100 g

Package dimensions

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

30-day right of return
24 Months Warranty (Bring-in)

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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
  • 29.Lazer Sport
    0.8 %
  • 29.Nutcase
    0.8 %
  • 29.Troy Lee Designs
    0.8 %
  • 34.Frezzo
    1 %
  • 35.Kask
    1.1 %

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
  • Troy Lee Designs
    Not enough data
  • 1.Abus
    0 days
  • 1.ALPINA SPORTS
    0 days
  • 1.Lazer Sport
    0 days
  • 1.Nutcase
    0 days

Return rate

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

Source: Digitec Galaxus
  • 21.Unit1
    19.6 %
  • 22.iXS
    20 %
  • 22.Troy Lee Designs
    20 %
  • 24.Kask
    20.3 %
  • 25.Smith
    21 %
Source: Digitec Galaxus