Helmet Size Guides

Getting the right sized helmet is crucial!

Don't gamble with your safety.

Measure around your head

If you haven't got a flexible measuring tape use a piece of string or shoelace! You want to make sure this measurement is as accurate as possible.

100% Status

Adult Size: Inches, Centimeters
XS: 20 7/8 - 21 1/4in, 53 - 54cm
SM: 21 5/8 - 22in, 55 - 56cm
MD: 22 1/2 - 22 7/8in, 57 - 58cm
LG: 23 1/4 - 23 5/8in, 59 - 60cm
XL: 24 - 24 3/8in, 61 - 62cm
XXL: 24 3/4 - 25 1/4in, 63 - 64cm


Youth Size: Inches, Centimeters
SM: 18 1/2 - 18 7/8in, 47 - 48cm
MD: 19 1/4 - 19 5/8in, 49 - 50cm
LG: 20 1/8 - 20 1/2in, 51 - 52cm

Bell Sanction

SIZE: CM, IN
XS: 48-51cm, 18 7/8" - 20 1/8"
S: 52-54cm, 20 1/2" - 21 1/4"
M: 55-57cm, 21 5/8" - 22 1/2"
L: 58-60cm, 23 1/4" - 24 5/8"

Bell Sanction V2

SIZE: CM, IN
XXS: 48-51cm, 19" - 20 1/8"
XS/S: 51-55cm, 20 1/8" - 21 5/8"
M: 55-57cm, 21 5/8" - 22 1/2"
L: 57-59cm, 22 1/2" - 23 1/4"
XL: 59-61cm, 23 1/4" - 24"

Kenny Downhill

XXS: 51-52cm

XS: 53-54cm

S: 55-56cm

M: 57-58cm

L: 59-60cm

XL: 61-62cm

XXL: 63-64cm

TLD

Troy Lee Designs

292 products
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The TSG Evolution Helmet in Satin Lime Green features hardshell construction, ventilation holes, black adjustable straps, and a white side logo. The TSG Evolution Helmet in Satin Lime Green features ventilation slots, high-impact protection, and an adjustable black chin strap, shown from the side.
TSG Evolution Helmet / Satin Lime Green

$73.00 USD

Green
S-ML-XL
The TSG Evolution Helmet in Satin Oxblood is a slim hardshell helmet with ventilation holes, black adjustable chin strap, foam padding, high-impact protection, and a Tuned Fit System for secure comfort. The TSG Evolution Helmet in Satin Oxblood is a slim, matte red skate-style hardshell with ventilation holes, black padding, and an adjustable black chin strap. It offers high-impact protection and is displayed against a white background.
TSG Evolution Helmet / Satin Oxblood

$73.00 USD

Maroon
S-ML-XL
The TSG Nipper Maxi Helmet in satin green features blue adjustable straps and a black buckle. This lightweight youth helmet ensures safety and comfort for active kids. Shown on a white background. The TSG Nipper Maxi Helmet in satin green for youth features blue adjustable straps, multiple ventilation holes, and a lightweight design, displayed against a white background.
TSG Nipper Maxi Helmet / Satin Green

$84.00 USD

Green
XXS-XS
The TSG Nipper Maxi Helmet / Satin White features in-mold construction, a protective white shell, black adjustable straps, and side vents—ideal for sports or outdoor activities. The TSG Nipper Maxi Helmet in Satin White features ventilation holes, adjustable straps, and a secure buckle for a snug fit. Shown in side profile on a plain background, it's lightweight and ideal for everyday protection.
TSG Nipper Maxi Helmet / Satin White

$84.00 USD

White
XXS-XS
The TSG Nipper Maxi Helmet / Fly Like A Bird features black straps, ventilation holes, abstract black and white side graphics, durable In-Mold Construction, and a Tuned Fit System for secure comfort. The TSG Nipper Maxi Helmet / Fly Like A Bird is a lightweight youth helmet in blue, featuring black and white bird and zigzag graphics, plus an adjustable black chin strap for comfort.
TSG Nipper Maxi Helmet / Fly Like A Bird

$91.00 USD

Blue
XXS-XS
Sold out
Bell Sanction 2 Dark Green

$145.00 USD

XS-SMLXL
Sold out
Bell Sanction 2 Dark Brown

$145.00 USD

XS-SMLXL
Sold out
Bell Sanction 2 Matte Blue

$145.00 USD

XS-SMLXL
The TLD D4 Polyacrylite Helmet (MIPS) / Shadow Timber is a tan and black full-face motocross helmet with a visor, designed for off-road use. It boasts a durable Polyacrylite shell, vibrant side graphics, and Mips brain protection for superior safety. The Troy Lee Designs helmet size chart provides detailed head circumference guidance in centimeters for full-face models like A1, A2, Stage, SE4, SE5. Models such as the TLD D4 Polyacrylite Helmet (MIPS) / Shadow Timber feature advanced Mips technology and durable polyacrylite shells.
TLD D4 Polyacrylite Helmet (MIPS) / Shadow Timber

$428.00 USD

Timber
XS-SM-LXL-XXL
Sold out
The TLD D4 Polyacrylite Helmet (MIPS) in Fifty-50 White/Red features a full-face design with the "Troy Lee Designs" logo and geometric patterns, crafted for motocross and BMX, and includes Mips® C2 technology for improved safety. The TLD D4 Polyacrylite Helmet (MIPS) / Fifty-50 White/Red size chart lists head circumference in inches and centimeters for models XS to 2XL, suitable for downhill BMX riders, and includes the advanced Mips® C2 protection system.
TLD D4 Polyacrylite Helmet (MIPS) / Fifty-50 White/Red

$428.00 USD

Red
XS-SM-LXL-XXL
The TLD D4 Polyacrylite Helmet (MIPS) in Fifty-50 Navy/Glo Yellow offers MIPS protection with a geometric pattern and Troy Lee Designs branding on the visor and side for maximum safety. Explore the TLD D4 Polyacrylite helmet size chart for a precise fit for various head sizes, including full-face models with MIPS protection. Perfect for biking or BMX, find your ideal size with the Fifty-50 Navy/Glo Yellow design.
TLD D4 Polyacrylite Helmet (MIPS) / Fifty-50 Navy/Glo Yellow

$428.00 USD

Yellow
XS-SM-LXL-XXL
Sold out
The TLD D4 Polyacrylite Helmet (MIPS) in Linear Blue features a visor, superior ventilation, angular design, and bold graphics. Enhanced with Mips® C2 brain protection, it offers top-tier safety and style on the track. Explore our helmet size chart with head circumference details for models such as the TLD D4 Polyacrylite Helmet (MIPS) / Linear Blue. Sizes from XS to XXL are available in different colors, featuring Mips® C2 brain protection for your peace of mind.
TLD D4 Polyacrylite Helmet (MIPS) / Linear Blue

$428.00 USD

Blue
XS-SM-LXL-XXL
Sold out
The TLD D4 Polyacrylite Helmet (MIPS) in Linear Black boasts a striking black and purple design with red and white accents, made from a durable polyacrylite shell. It features Troy Lee Designs branding and includes MIPS brain protection for enhanced safety. The TLD D4 Polyacrylite Helmet (MIPS) size chart offers a detailed, color-coded guide for head circumferences and sizes, including the Linear Black model featuring Mips Brain Protection for full face coverage.
TLD D4 Polyacrylite Helmet (MIPS) / Linear Black

$428.00 USD

Black
XS-SM-LXL-XXL
Sold out
The TLD 25.1 D4 Composite Helmet (MIPS) in Royalty Black/Gold merges style and safety with its full-face motocross design and integrated MIPS protection. The TLD 25.1 D4 Composite Helmet (MIPS) size chart shows head circumferences in inches and centimeters, ranging from XS to 2XL for various models, including full face helmets with MIPS protection.
TLD 25.1 D4 Composite Helmet (MIPS) / Royalty Black/Gold

$595.00 USD

Black
XS-SM-LXL-XXL
Sold out
The TLD 25.1 D4 Composite Helmet (MIPS) in white/silver is a full-face motocross helmet featuring blue, red, and black geometric patterns with a visor for optimal protection. Troy Lee Designs' helmet size chart includes the TLD 25.1 D4 Composite Helmet (MIPS) in White/Silver, covering full face helmets like downhill types with MIPS protection. It shows sizes from XS to 3XL based on head circumference, using color codes for easy selection.
TLD 25.1 D4 Composite Helmet (MIPS) / White/Silver

$595.00 USD

White
XS-SM-LXL-XXL
The TLD 25.1 D4 Composite Helmet (MIPS) in Optic Timber, a matte black and green full-face motocross helmet with angular patterns and visor features "Troy Lee Designs" text on the edge. It offers enhanced safety with MIPS protection for improved impact resistance. Check out the helmet size chart for Troy Lee Designs, featuring head circumference and index measurements for models like SE4, SE5, and full-face Motohelmets. From downhill to MIPS protection helmets like the TLD 25.1 D4 Composite Helmet (MIPS) / Optic Timber, sizes range from XXS to XXL.
TLD 25.1 D4 Composite Helmet (MIPS) / Optic Timber

$595.00 USD

Brown
XS-SM-LXL-XXL
Sold out
The TLD 25.1 D4 Composite Helmet (MIPS) in Glo Yellow is a vibrant BMX racing helmet featuring blue and green geometric patterns, a visor, and ventilation ports for optimal airflow, branded with "Troy Lee Designs. The Troy Lee Designs size chart outlines head circumference ranges for models like the TLD 25.1 D4 Composite Helmet (MIPS) in Glo Yellow, ideal for BMX racing with features like enhanced ventilation and the Mips protection system.
TLD 25.1 D4 Composite Helmet (MIPS) / Glo Yellow

$595.00 USD

Yellow
XS-SM-LXL-XXL
Sold out
The TLD 25.1 D4 Carbon Helmet (MIPS) in Optic Black showcases striking black, white, and orange angular patterns with the "Troy Lee Designs" logo on top, making it ideal for downhill BMX enthusiasts desiring style and protection. The Troy Lee Designs size chart for the TLD 25.1 D4 Carbon Helmet (MIPS) features head circumferences in cm, with color-coded bars for a tailored fit. Ideal for BMX or downhill racing, this Optic Black full-face helmet ensures you find your perfect fit.
TLD 25.1 D4 Carbon Helmet (MIPS) / Optic Black

$827.00 USD

Black
XS-SM-LXL-XXL
Sold out
The TLD 25.1 D4 Carbon Helmet (MIPS) in black and gold boasts stylish geometric designs, showcasing "Troy Lee Designs." Perfect for downhill BMX riders, it combines sleek aesthetics with MIPS protection to enhance safety on each ride. The TLD 25.1 D4 Carbon Helmet (MIPS) in Frames Black/Gold offers a size chart with head circumference ranges from youth to XL. Ideal for BMX and downhill riders, it boasts vibrant colors and full-face design for top-notch protection and style.
TLD 25.1 D4 Carbon Helmet (MIPS) / Frames Black/Gold

$827.00 USD

Black
XS-SM-LXL-XXL
Sold out
The TLD 24.1 STAGE MIPS AS HELMET is a green and yellow full-face mountain bike helmet with modern design patterns and vent openings, offering enhanced safety for adventurous rides. Rear view of the TLD 24.1 STAGE MIPS AS HELMET, a full-face mountain bike helmet in green, yellow, and white with a central triangular vent and Mips logo.
TLD 24.1 STAGE MIPS AS HELMET

$446.00 USD

Yellow/Green/White
XS-SM-LXL-XXL
Sold out
A silver multi-impact helmet with a glittery finish, featuring ventilation holes, soft interior padding, and an adjustable chin strap. The S-One Helmet Retro Lifer Silver Gloss Glitter boasts high-impact protection and a stylish "S1" logo on the side. The S-One Helmet Retro Lifer Silver Gloss Glitter is a silver glittery helmet with black trim, ventilation holes, and a chin strap. This multi-impact helmet features the "S1" logo on the side and is designed for high-impact protection.
S-One Helmet Retro Lifer Silver Gloss Glitter

$113.00 USD

Glitter
XSSMLXLXXLXXXL
Sold out
A S-One Helmet Retro Lifer Gold Gloss Glitter with ventilation holes, a black interior, and a chin strap, adorned with a black logo on the side. This multi-impact certified helmet features EPS Fusion Foam for superior protection and comfort. The S-One Helmet Retro Lifer Gold Gloss Glitter features black trim, ventilated holes, an adjustable chin strap, and the "S1" logo on the front. With EPS Fusion Foam for optimal protection, this multi-impact certified helmet ensures safety and style in one sleek package.
S-One Helmet Retro Lifer Gold Gloss Glitter

$113.00 USD

Glitter
XSSMLXLXXLXXXL
Sold out
The S-One Helmet Retro Lifer Black Gloss Glitter is a black BMX helmet with a sparkling glitter finish, foam padding inside, ventilation holes on the front, and an adjustable chin strap. This multi-impact helmet ensures safety and style for all your journeys. The S-One Helmet Retro Lifer Black Gloss Glitter features ventilation holes and a padded interior. Front view.
S-One Helmet Retro Lifer Black Gloss Glitter

$113.00 USD

Glitter
XSSMLXLXXLXXXL
Sold out
A TLD D4 Carbon AS Helmet W/MIPS Inferno Grey with a red, blue, and yellow design. A TLD D4 Carbon AS Helmet W/MIPS Inferno Grey with a red, blue, and black design.
TLD D4 Carbon AS Helmet W/MIPS Inferno Grey

$798.00 USD

Inferno Grey
XS-SM-LXL-XXL

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