Troy Lee Designs D4 Carbon Full Face Helmet - Black - Large

Name: Troy Lee Designs D4 Carbon Full Face Helmet - Black - Large
Brand: Troy Lee Designs
SKU: cpaiedshfd
Price: 409.00 GBP
Availability: InStock

The Troy Lee Designs D4 Carbon full-face helmet is a pinnacle of performance for downhill mountain...

Best current price£409.00from Merlin Cycles

Gender

Male Unisex

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Product Information

Full details

The Troy Lee Designs D4 Carbon Full Face Helmet is a premier choice for adult downhill mountain bikers and BMX racers who prioritize high-level impact protection and lightweight comfort. Featuring an advanced UD carbon fiber shell and Mips C2 technology, it provides superior safety without sacrificing agility; however, its specialized design and premium construction mean it is primarily intended for high-intensity racing environments rather than casual trail riding.

All features

Age Group	adult
Colour	Black
Gender	Unisex
Model Part Number	TLD139437014
Brand	Troy Lee Designs

Extended Product Information

FAQs

Does this helmet meet downhill certification?

Yes, it is certified to ASTM F1952-DH and ASTM 2032-BMX standards, making it fully compliant for downhill racing.

Can I remove the visor?

Yes, the visor is adjustable and removable for maintenance or replacement.

How often should I replace the helmet?

It is recommended to replace any helmet after a significant impact, or every 3-5 years due to natural material degradation.

Is the Mips system replaceable?

The Mips C2 system is integrated into the helmet and should not be removed; contact professional support if you suspect it has been damaged.

What does the Emergency Release System do?

It allows emergency responders to pull the cheek pads out before removing the helmet, which helps stabilize the rider's neck.

Is the liner machine washable?

Hand washing is highly recommended to ensure the longevity of the moisture-wicking materials and the foam structure.

Troubleshooting

Helmet feels loose during movement

Ensure the chin strap is properly tightened and verify you are using the correct cheek pad thickness if options are available.

Liner smells or shows sweat buildup

Remove the snap-in liner and hand wash it with mild sports detergent, then allow it to air dry completely.

Pros and Cons

Pros

Extremely lightweight carbon fiber construction
Industry-leading Mips C2 safety technology
Emergency release cheek pad system for enhanced safety
Highly breathable with an effective moisture-wicking liner
Meets multiple international safety standards (CPSC, CE, ASTM)

Cons

Premium pricing reflective of professional-grade materials
Designed specifically for gravity sports, which may feel overkill for casual riding
Requires careful hand-washing of the liner to maintain integrity

Setup, Compatibility & Care

To ensure the best fit, utilize the three distinct shell sizes provided by Troy Lee Designs to match your head circumference precisely. Once the helmet is on, ensure the titanium D-rings are threaded correctly so the strap sits snugly against the jawline without causing discomfort. For care, avoid using harsh chemical cleaners; use a mild soap and water solution to clean the shell. The internal liner should be removed periodically and hand-washed with mild detergent, then air-dried to preserve the moisture-wicking properties of the fabric. Always inspect the shell for hairline fractures after any significant impact.