Troy Lee Designs D4 Polyacrylite Helmet
Best protective headgear for downhill mountain bikers seeking premium comfort.
This helmet brings race-proven safety to a wider audience by swapping expensive carbon for a durable polyacrylite shell. It retains essential high-end features like rotational impact protection and collarbone mitigation, making it a smart choice for gravity riders who prioritize performance and value.
$380.00
at
Cambria Bike
More D-Series options
Who it's for
- Safety-conscious riders seeking professional-grade protection on technical descents.
- Downhill racers who need maximum breathability during high-output summer rides.
- Performance-oriented mountain bikers looking for a lightweight yet robust shell.
Who should skip it
- Budget-conscious beginners who may find the high entry cost prohibitive.
- Riders with wider facial structures who prefer a roomier interior.
- Casual trail riders seeking a versatile helmet for varied terrain.
Performance breakdown
Impact Protection
Mips C2 integration provides top-tier defense against rotational crash forces.
Ventilation Efficiency
High-flow intake channels keep riders cool during high-intensity gravity runs.
Shell Durability
Polyacrylite construction offers rugged resilience against trail debris and impacts.
Emergency Readiness
Quick-release cheek pads allow for rapid, safe removal by medical responders.
Comfort and Fit
Plush, anti-microbial padding ensures a secure, irritation-free fit for long days.
Weight Optimization
Heavier than carbon alternatives, but balances weight well for the price.
Key Specs
Safety Technology
Mips C2 Protection System
Safety Technology
Collarbone Suspension System
Shell Material
Polyacrylite
Helmet Type
Full Face
Intended Use
Downhill, Gravity, BMX
Visor Type
Breakaway
Removable Padding
Yes
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