Troy Lee Designs D3 Fiberlite
Best entry level full face for downhill mountain bike enthusiasts
This is a tank of a helmet built for riders who prioritize impact safety over featherweight specs. While it runs warmer and heavier than carbon alternatives, the robust fiberglass shell and plush interior offer the kind of confidence you want when you’re pushing limits on high-speed descents.
$339.99
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Who it's for
- Competitive downhill racers seeking aerodynamic efficiency and high-speed stability
- Mountain bikers riding in warm climates who prioritize thermal regulation
- Safety-conscious riders wanting professional-grade protection on technical terrain
Who should skip it
- Endurance riders sensitive to helmet weight during long days
- Technical trail riders who require maximum peripheral awareness
- Riders with wider faces or those preferring a relaxed fit
Performance breakdown
Impact Protection
Dual-density foam and fiberglass shell provide robust, race-ready impact absorption.
Ventilation Efficiency
Twenty vents offer decent airflow, though it runs warmer than carbon alternatives.
Weight Management
At over 1200 grams, it feels substantial rather than featherlight on descents.
Fit Customization
Adjustable visor and plush padding create a secure, locked-in feel.
Safety Features
ASTM certifications and emergency cheek pads prioritize rider safety above all else.
Build Durability
Fiberglass construction withstands the rigors of bike park abuse season after season.
Key Specs
Helmet Style
Full-Face
Intended Use
Downhill, Freeride
Weight
1219 grams
Shell Material
Fiberglass
Number of Vents
20
Safety Certification
ASTM F1952-15, ASTM F2032-15
Closure Type
D-ring chin strap
Visor Type
Adjustable
Removable Padding
Yes
Integrated Bug Netting
Yes
Know before you buy
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Ask Metto anything about the Troy Lee Designs D3 Fiberlite before you decide.