Troy Lee Designs - D4 Polyacrylite Linear MIPS Helmet (MTB)
SKU: 20795140889

Troy Lee Designs - D4 Polyacrylite Linear MIPS Helmet (MTB)

Sale price$112.05 Regular price$124.50
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Ships within 48 hours · Estimated delivery Jul 4 - Jul 9

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Description

Troy Lee Designs - D4 Polyacrylite Linear MIPS Helmet (MTB)Troy Lee Designs D4 Polyacrylite Linear MIPS Helmet (MTB) D4 Polyacrylite Linear MIPS Helmet is a Troy Lee Designs mountain bike helmet built for gravity riders. The D4 platform is known for downhill focused coverage and a locked in feel when the terrain gets steep and fast. The Polyacrylite shell helps keep the price more approachable while still delivering the coverage riders expect. The Linear treatment gives this helmet a more individual feel than

Troy Lee Designs - D4 Polyacrylite Linear MIPS Helmet (MTB)

D4 Polyacrylite Linear MIPS Helmet is a Troy Lee Designs mountain bike helmet built for gravity riders. The D4 platform is known for downhill-focused coverage and a locked-in feel when the terrain gets steep and fast. The Polyacrylite shell helps keep the price more approachable while still delivering the coverage riders expect. The Linear treatment gives this helmet a more individual feel than a plain solid option. The MIPS-equipped build adds another layer of confidence for riders who prioritize modern helmet technology.

It is shaped for modern off-road mountain biking, with the secure feel, airflow, and coverage riders look for when the route mixes climbing, descending, and repeated hits through rough sections.

Why We Like It: it gives riders a stable feel on rough descents without turning every climb into a chore.

Why It’ll Work for You: This is a strong pick when you want a mountain bike helmet that feels at home on everything from rough local descents to destination riding.

Variants / Options: multiple sizes and colorways available; check the selector for current stock.

Key Features:
  • Troy Lee Designs - D4 Polyacrylite Linear MIPS Helmet (MTB)
  • 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.
  • 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
  • Quick release contoured 3D cheek pads for anatomically optimized fit

Shipping Notes
  • Free Standard Shipping on $100+ Orders to the USA.
  • Except Preorder products are shipped in 48 hours.
  • Delivery to the USA:
  1. Standard Shipping : 3-10 business days
  • If time is of the essence, please consider selecting expedited delivery for faster service.
Exchange/Return Notes
  • We offer a 30-day return/exchange service after receiving.
  • Final sale items are not eligible for returns or exchanges.
  • To process your return/exchange, please contact us at [email protected]
  • Please click here for more details>>> Return & Exchange Policy
SKU: 20795140889

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4.5 ★★★★★
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Verified Purchase
gail
Louisville, US
★★★★★ 5
Let there be light!
Easy to assemble. Lights are very bright. Very sturdy even with terrible storms it's still working and bright
WAS THIS REVIEW HELPFUL?YesReportShare
Reviewed in the United States on January 27, 2026
T
Verified Purchase
Tiffany
Boise, US
★★★★★ 3
Okay
I like that it fits my umbrella well, hinges open for easy application and removal, and that it has enough light for us to see our food at night. I do not like that half of the outer lights do not work part of the time until I take out the batteries and swap them around. Fine enough for the price, not worth the hassle of returning.
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Reviewed in the United States on May 10, 2025
F
Verified Purchase
Flnative
Los Angeles, US
★★★★★ 5
Perfect!
Lightweight and easy to use! Love the three light settings.
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Reviewed in the United States on April 27, 2026
M
Verified Purchase
Mary M.
San Leandro, US
★★★★★ 5
Easy to use.
Works well. Light is bright. Our new patio umbrella does not have e a center pole, so the lights get somewhat blocked. But still pretty useful.
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Reviewed in the United States on April 5, 2026
A
Verified Purchase
Amanda Ostrom
Alexandria, US
★★★★★ 5
Easy portability & Strong umbrella support
Size: 19inch
Its exactly as advertized! Pros: • rolls well • medium sized (not a tripping hazard & corner fit under the edge of all my furniture) • holds tall (through center of table) umbrella while open in minor wind with water-filled option. • multiple size umbrella pole insert included • Clear instructions. • easy to use brakes (on 2 wheels for security...4 wheels would be annoying to use every day) Cons: • will still roll with brakes on with a little force when I'm being lazy...it should not be this easy (I usually have a corner of the stand tucked under a piece of furniture anyways) • I would call this "light heavy duty" rather than "sturdy heavy duty" with water-filled option. I'd imagine sand + water as suggested would actually be heavy duty. • re-design suggestion: base of umbrella could extend down below the water tank for sturdier hold, but this is the best I've found.
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Reviewed in the United States on May 19, 2026

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