Troy Lee Designs D4 MIPS

58 - 59 cm
Ratings
BrandMore from Troy Lee Designs
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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 single 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 unrivalled anatomical fit.

Key specifications

Colour
Black
Bike helmet type
Downhill helmet
Bike helmet size
L
Head circumference
58 - 59 cm
Helmet shape
Fullface
Helmet features
MIPS
Weight
1100 g

General information

Item number
54421818
Manufacturer
Troy Lee Designs
Category
Bike helmets
Manufacturer No.
174499004
Release date
5.2.2025
Sales rank in Category Bike helmets
1767 of 9488

Colour

Colour
Black
Exact colour description
Black, Black

Material

Material group
Plastic
Material
Polyacrylite

Target group

Target group
Men, Women
Age group
Adults

Helmet properties

Bike helmet type
Downhill helmet
Bike helmet size
L
Head circumference
58 - 59 cm
Helmet shape
Fullface
Helmet features
MIPS
Visor type
Removable

Origin

Country of origin
China

Voluntary climate contribution

CO₂ emissions
5.1 kg
Climate contribution
CHF 0.12

Scope of delivery

Scope of delivery
Helm

Product dimensions

Weight
1100 g

Package dimensions

Length
39 cm
Width
28 cm
Height
31 cm
Weight
1.86 kg

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
  • 36.Kask
    0.9 %
  • 36.Oakley
    0.9 %
  • 36.Troy Lee Designs
    0.9 %
  • 39.HJC
    1 %
  • 39.Lumos
    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.Lazer Sport
    3 days
  • 10.Troy Lee Designs
    3 days
  • 13.Frezzo
    4 days
  • 13.iXS
    4 days

Return rate

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

Source: Digitec Galaxus
  • 34.iXS
    24.6 %
  • 35.Poc
    24.8 %
  • 36.Troy Lee Designs
    24.9 %
  • 37.Bell
    25.3 %
  • 38.Frezzo
    26 %
Source: Digitec Galaxus