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Troy Lee Designs D4 Poly Headliner; Solid Black XS (54CM) | Repair and Installation Guide

$38.00

SKU: C-B0D4GVGLMB Category:

Review this component in the context of the repair, installation access, nearby parts, and the result the job is intended to achieve.

About this item

  • Replacement headliner for the Troy Lee Designs D4 Helmet.

Before you order
  • Confirm the part number, position, dimensions, and connector details shown on this page.
  • Compare the listing with the part currently installed on your vehicle.

Description

Review this item in the context of the repair, installation access, nearby parts, and the result the completed job is intended to achieve.

Product Description

Troy Lee Designs

D4 Bike Helmet

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.

  1. Troy Lee Designs

    D4 Helmet: Legend Redesigned

    The Daytona Helmet changed everything. It’s the most iconic, most storied, and most chosen Downhill, Freeride, and BMX race helmets in bicycling history. First introduced in 1996, the legendary Daytona lead the modern era of mountain biking and BMX with a magical blend of style and innovation. The Daytona and its successors have been worn by more MTB and BMX heroes—and have collected more titles, medals and accolades, and YouTube views than any other helmet in history.

    The video showcases the product in use.The video guides you through product setup.The video compares multiple products.The video shows the product being unpacked.

  2. Troy Lee Designs

    D4 Helmet: Highlight Reel

    The most iconic, most storied and most chosen Downhill, Freeride and BMX race helmets in bicycling history. The Daytona Series changed everything.

    The video showcases the product in use.The video guides you through product setup.The video compares multiple products.The video shows the product being unpacked.

  • What is MIPS ?



    MIPS is a safety technology that adds a low-friction layer inside the helmet that can move slightly during an impact, helping to reduce the rotational force on the head and lowering the risk of brain injury.

  • Can I purchase helmet accessories and parts separately?



    Yes. We offer a full range of replacement parts, including visors, padding, and more.

Product facts

Specifications

Canonical product
MP-US-B0D4GVGLMB
Source product ID
B0D4GVGLMB
Category
Motorcycle & Atv / Protective Gear / Helmet Accessories / Helmet Liners
Available images
1

Vehicle information

Available fitment details

Listing compatibility notes

  • 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.

Fitment data is provided as a buying aid. Verify the listing against your vehicle and existing part before ordering.

Repair scenarios, installation, companion parts, and use outcomes

Buying guidance

Quick decision

Review this helmet liners in the context of the repair and the surrounding components.

Repair scenario

  • Identify the symptom and confirm that this is the component required by the repair.
  • Inspect nearby connectors, fasteners, and mating surfaces before installation.

Installation notes

  • Use the listing instructions when present and follow the vehicle service procedure.
  • Professional installation may be appropriate when the repair requires special tools or calibration.

Companion parts

  • Inspect nearby fasteners, connectors, seals, fluids, and wear items before starting the repair.
  • Use the service procedure and the visible package contents to identify any additional parts or tools required.

Before you buy

  • Compare the listing title, photos, package contents, and specifications with the part being replaced.
  • Confirm vehicle compatibility and installation requirements before ordering.

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