Troy Lee Designs D4 Carbon Helmet - Flush Violet - S
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Description
D4 reigns king atop downhill podiums and BMX events across the globe. Available in carbon composite and polyacrylite. Details are what makes the D4 the most coveted full-face in mountain biking. Prioritising safety while balancing weight through premium construction and materials D4 incorporates Mips® protection with an EPP chin bar and anatomical cheek pads with emergency release.Features Mips® C2 Rotational Impact Brain Protection SystemOffered in carbon composite and polyacrylite shellThree shell sizes to more accurately fit a variety of head sizes and rider agesAnatomical "3D" contoured cheek pads with emergency release system for EMS respondersRemovable snap-in washable comfort liner with moisture-wicking materialsSuper light titanium D-ringsSmart sheer breakaway visor screwsCPSC 1203 CE EN1078 ASTM F1952-DH ASTM 2032-BMX.table th td { border: 1px solid black; border-collapse: collapse;} SIZE XS S M L XL XXL HAT SIZE 6 5/8 - 7 6 7/8 - 7 7 1/8 - 7 1/4 7 1/4 - 7 3/8 7 1/2 - 7 5/8 7 3/4 - 7 7/8 CM 53 - 54 55 - 56 57 - 58 58 - 59 60 - 61 62 - 63 IN 20 7/8 - 21 1/4 21 5/8 - 22 22 3/8 - 22 3/4 22 3/4 - 23 1/4 23 5/8 - 24 24 3/8 - 24 3/4
Specifications
- Brand
- Troy Lee Designs
- Category
- Helmets
- Size
- S, M
- SKU
- TLD139365002
Size guide
Troy Lee Designs helmets
Fit tip If you sit on the border between two sizes, most riders are better off in the smaller size, as padding beds in with use.
How to measure
Wrap a soft tape measure around your head just above your eyebrows and ears, keeping it level, and note the circumference in cm. Find the table for the helmet model you are buying and pick the size whose range includes your measurement. A helmet should feel snug all the way round with no pressure points and should not rock when you shake your head. If you sit on the border between two sizes, most riders are better off in the smaller size, as padding beds in with use.
Find my size
Enter what you can measure; we'll match it to the table.
| Size | Head circumference (cm) |
|---|---|
| Youth XS | 48-53 |
| S | 54-56 |
| M/L | 57-59 |
| XL/XXL | 60-62 |
| Size | Head circumference (cm) |
|---|---|
| S | 53-56 |
| M/L | 57-59 |
| XL/XXL | 60-63 |
| Size | Head circumference (cm) |
|---|---|
| Youth XS | 48-52 |
| XS/S | 53-56 |
| M/L | 57-59 |
| XL/XXL | 60-62 |
| Size | Head circumference (cm) |
|---|---|
| XS/S | 54-56 |
| M/L | 57-59 |
| XL/XXL | 60-62 |
| Size | Head circumference (cm) |
|---|---|
| XS/S | 53-56 |
| M/L | 57-59 |
| XL/XXL | 60-62 |
| Size | Head circumference (cm) |
|---|---|
| XS | 52-53 |
| S | 54-55 |
| M | 56-57 |
| L | 58-59 |
| XL | 60-62 |
| XXL | 63-65 |
| Size | Head circumference (cm) |
|---|---|
| XS | 53-54 |
| S | 55-56 |
| M | 57-58 |
| L | 58-59 |
| XL | 60-61 |
| XXL | 62-63 |
Applies to Troy Lee Designs bike helmets. Each model has its own table, so check the model name before you choose. The Youth XS size listed for the A1, A2 and Flowline is the only youth-specific size; all other sizes are adult. On the D4 the M and L ranges meet at 58 cm, so a 58 cm head can take either depending on preference.
Delivery & returns
- Express: order by 3.30pm on a working day for next working day delivery (items in stock at Biggin Hill)
- Standard: free UK delivery on orders over £50
- Free click & collect from Biggin Hill, TN16
- 60-day returns – how to return an item
Reviews
Troy Lee Designs helmets
Fit tip If you sit on the border between two sizes, most riders are better off in the smaller size, as padding beds in with use.
How to measure
Wrap a soft tape measure around your head just above your eyebrows and ears, keeping it level, and note the circumference in cm. Find the table for the helmet model you are buying and pick the size whose range includes your measurement. A helmet should feel snug all the way round with no pressure points and should not rock when you shake your head. If you sit on the border between two sizes, most riders are better off in the smaller size, as padding beds in with use.
Find my size
Enter what you can measure; we'll match it to the table.
| Size | Head circumference (cm) |
|---|---|
| Youth XS | 48-53 |
| S | 54-56 |
| M/L | 57-59 |
| XL/XXL | 60-62 |
| Size | Head circumference (cm) |
|---|---|
| S | 53-56 |
| M/L | 57-59 |
| XL/XXL | 60-63 |
| Size | Head circumference (cm) |
|---|---|
| Youth XS | 48-52 |
| XS/S | 53-56 |
| M/L | 57-59 |
| XL/XXL | 60-62 |
| Size | Head circumference (cm) |
|---|---|
| XS/S | 54-56 |
| M/L | 57-59 |
| XL/XXL | 60-62 |
| Size | Head circumference (cm) |
|---|---|
| XS/S | 53-56 |
| M/L | 57-59 |
| XL/XXL | 60-62 |
| Size | Head circumference (cm) |
|---|---|
| XS | 52-53 |
| S | 54-55 |
| M | 56-57 |
| L | 58-59 |
| XL | 60-62 |
| XXL | 63-65 |
| Size | Head circumference (cm) |
|---|---|
| XS | 53-54 |
| S | 55-56 |
| M | 57-58 |
| L | 58-59 |
| XL | 60-61 |
| XXL | 62-63 |
Applies to Troy Lee Designs bike helmets. Each model has its own table, so check the model name before you choose. The Youth XS size listed for the A1, A2 and Flowline is the only youth-specific size; all other sizes are adult. On the D4 the M and L ranges meet at 58 cm, so a 58 cm head can take either depending on preference.
