D4 Helmet Purchase
"Bought this for my 11 year old and couldn’t happier. Caught an amazing sale and shipping was exceptionally fast!!"
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The reigning king of full-face helmets, the D4 range expands with a Polyacrylite model packing the same safety and comfort features as the premium carbon and composite models into a price-conscious shell. Details make the D4 the most coveted full-face in mountain biking, including Mips® C2 brain protection, an air intake system for ventilation, and an unmatched anatomical fit.
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The Reigning King of Full-Face Helmets
This helmet is designed and intended exclusively for use by bicycling activities, including mountain biking and off-road cycling.
SKU:174582011
- Mips® C2 Rotational Impact Brain Protection System
- Advanced Polyacrylite shell construction
- Front air intake system, with high flow through polymer center and power grid side mesh
- Collarbone Suspension System
- Breakaway visor screws
- Anti-microbial padding
- 1150G
- Quick release contoured 3D cheek pads for anatomically optimized fit
FREE Shipping on all orders over $99. For full details, visit our Shipping & Returns Page.

Overall rating: 5.0 / 5 from 5 reviews.
Review topics: ["fit","weight","helmet","adjustment"].
"Bought this for my 11 year old and couldn’t happier. Caught an amazing sale and shipping was exceptionally fast!!"
— Karen W. (5/5)
"HE TENIDO VARIOS CASCOS, PERO ESTE ES EL CASCO QUE SIEMPRE SOÑABA CON TENER, LOS COLORES SIMPLEMENTE SON BRILLANTES Y LA CALIDAD SE SIENTE MUY BUENA, ESPERO SACARLO A UN RIDE SUPER RAPIDO EN LA MONTAÑA."
— Mario B. (5/5)
"It’s a little smaller than his previous one but it will work we guess"
— Timmy P. (5/5)
"Just got a D4 from TLD. So light on my head and very comfortable. I can ride all day in it. Air moves through it to keep my head chill. And the graphics are awesome.It's now my go to helmet for downhill gnar."
— Anthony F. (5/5)
"Bitchin...nuff said"
— Josh B. (5/5)
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