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Troy Lee Designs - D4 Polyacrylite Stealth Helmet (MTB)

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Troy Lee Designs - D4 Polyacrylite Stealth Helmet (MTB)

Troy Lee Designs - D4 Polyacrylite Stealth Helmet (MTB)

D4 Polyacrylite Stealth Helmet is a Troy Lee Designs mountain bike helmet built for trail 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. In the Stealth colorway, it brings a strong visual identity without losing the performance-first focus of the helmet.

That combination of coverage and ventilation makes it a natural match for riders who move between trail networks, rocky descents, and bike-park days through the season.

Why We Like It: it balances mountain bike protection with the kind of ventilation and fit that keeps longer rides from feeling like work.

Why It’ll Work for You: It works well for riders who split time between trail loops, enduro stages, and lift-served laps and want one mountain bike helmet that feels ready for all of it.

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

Key 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.
  • This helmet is designed and intended exclusively for use by bicycling activities, including mountain biking and off-road cycling.
  • Specifications
  • 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

Select Color
Select Size
From $63.36

Original: $211.20

-70%
Troy Lee Designs - D4 Polyacrylite Stealth Helmet (MTB)

$211.20

$63.36

Product Information

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Description

Troy Lee Designs - D4 Polyacrylite Stealth Helmet (MTB)

D4 Polyacrylite Stealth Helmet is a Troy Lee Designs mountain bike helmet built for trail 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. In the Stealth colorway, it brings a strong visual identity without losing the performance-first focus of the helmet.

That combination of coverage and ventilation makes it a natural match for riders who move between trail networks, rocky descents, and bike-park days through the season.

Why We Like It: it balances mountain bike protection with the kind of ventilation and fit that keeps longer rides from feeling like work.

Why It’ll Work for You: It works well for riders who split time between trail loops, enduro stages, and lift-served laps and want one mountain bike helmet that feels ready for all of it.

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

Key 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.
  • This helmet is designed and intended exclusively for use by bicycling activities, including mountain biking and off-road cycling.
  • Specifications
  • 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

Troy Lee Designs - D4 Polyacrylite Stealth Helmet (MTB) | BTO Sports