The TLD 25.2 D4 POLY HELMET MIPS QUALIFER in black/yellow features angular patterns, red accents, and Troy Lee Designs branding—perfect for mountain biking with advanced Mips protection.

The TLD 25.2 D4 Poly Helmet MIPS Qualifer in black and yellow features a full-face design, bold graphics, ventilation slots, visor, and advanced Mips protection for enhanced safety.

Back view of the TLD 25.2 D4 POLY HELMET MIPS QUALIFER in black and yellow with red and orange accents, featuring Mips protection and a signature near the bottom.

Top view of the TLD 25.2 D4 Poly Helmet MIPS Qualifer in black/yellow, featuring Troy Lee Designs branding, geometric patterns, and Mips safety protection.

Troy Lee Designs D4 26.1 Carbon Helmet Mips size chart lists head circumference in cm and sizes (XS–XXL) for adults and kids, making it ideal for mountain biking. Compatible with Mips protection, Stealth Black model included.

Description

TLD back at it again with this sweet lid. Stacked full of features to keep your face looking pretty day after day.

D4 Polyacrylite MIPS Full Face Helmet
Price conscious, comfort and safety

DISCIPLINE: Downhill, BMX
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.

FEATURES
• 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

TLD 25.2 D4 POLY HELMET MIPS QUALIFER BLACK / YELLOW

Name: TLD 25.2 D4 POLY HELMET MIPS QUALIFER BLACK / YELLOW
Brand: Troy Lee Designs
SKU: 175559003
Price: 589.99 AUD
Availability: OutOfStock

Brand: Troy Lee Designs SKU: Click to copy the SKU and show the pick location

$589.99 AUD

Or 4 payments of $147.49 AUD with

Colour - Black/Yellow

Size - M-L

The D4 (Carbon, Composite and Polyacrylite) comes in three shells, each covering two sizes. Pick the shell that covers your measurement.

Size	Head circumference	Notes
XS-S	53–56cm	XS 53–54 · S 55–56
M-L	57–59cm	M 57–58 · L 58–59
XL-XXL	60–63cm	XL 60–61 · XXL 62–63

TLD says: if you are between sizes, consider the larger size for a more relaxed fit. Spare cheek pads and a head liner are included to fine-tune the fit.

How to measure

Wrap a soft tape measure to measure the circumference (around) your head an inch (2.54cm) above your eyebrows. Keep the tape level front to back around the widest part of your head. Keep it level and snug but not tight. If you don't have a measuring tape, use a piece of string, shoelace, spaghetti* or snake** then lay it out on a table and measure it with a ruler.

*Make sure the spaghetti is cooked or the snake is asleep.

**LUXBMX does not recommend using a snake to measure the circumference of your head. (It's a joke)

Between two sizes? Most helmet brands recommend the larger size and using the thicker set of pads. A helmet should feel snug all round with no pressure points, and shouldn't rock when you shake your head.

Read the full buying guide

The D4 (Carbon, Composite and Polyacrylite) comes in three shells, each covering two sizes. Pick the shell that covers your measurement.

Size	Head circumference	Notes
XS-S	53–56cm	XS 53–54 · S 55–56
M-L	57–59cm	M 57–58 · L 58–59
XL-XXL	60–63cm	XL 60–61 · XXL 62–63

TLD says: if you are between sizes, consider the larger size for a more relaxed fit. Spare cheek pads and a head liner are included to fine-tune the fit.