Troy Lee Designs D4 Polyacrylite MIPS Helmet, Fifty-50, white/ red, S | 55-56cm

55 - 56 cm, S
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Product details

The undisputed king of full-face helmets, the D4 series, is now expanded with a polyacrylite model that packs the same safety and comfort features as the premium carbon and composite models into a budget-friendly shell. 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 unparalleled anatomical fit.

  • Mips® C2 rotational impact brain protection system
  • Advanced polyacrylite shell construction
  • Front air intake system with high airflow through the polymer center and power grid side mesh
  • Clavicle protection system
  • Breakaway visor screws
  • Antibacterial padding
  • Quick-release contoured 3D cheek pads for an anatomically optimized fit.

Key specifications

Colour
Red, White
Helmet features
MIPS, Visor
Weight
1.10 kg
Item number
54421814

General information

Manufacturer
Troy Lee Designs
Category
Motorbike helmets
Manufacturer no.
174356012
Release date
5.2.2025
Sales rank in Category Motorbike helmets
325 of 3781

Colour

Colour
Red, White
Exact colour description
White-Red

Material

Material group
Plastic
Material
Polyacrylite

Helmet properties

Helmet size
S
Head circumference
55 - 56 cm
Helmet features
MIPS, Visor

Origin

Country of origin
China

Voluntary climate contribution

CO₂-Emission
Climate contribution

Product dimensions

Weight
1.10 kg

Package dimensions

Length
30 cm
Width
20 cm
Height
7 cm
Weight
600 g

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Reviews & Ratings

Warranty score

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

Source: Digitec Galaxus
  • Troy Lee Designs
    Not enough data
  • 1.MT Helmets
    0 %
  • 2.Caberg
    0.2 %
  • 3.Nox Premium
    0.3 %
  • 4.AGV
    0.4 %

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.iXS
    0 days
  • 2.HJC
    5 days
  • 3.Shoei
    6 days
  • AGV
    Not enough data

Return rate

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

Source: Digitec Galaxus
  • Troy Lee Designs
    Not enough data
  • 1.Nolan
    16.2 %
  • 2.Caberg
    16.8 %
  • 3.Momo Design
    18.1 %
  • 4.Nexx
    20.4 %
Source: Digitec Galaxus