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

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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
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$819.99 AUD
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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
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$819.99 AUD
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
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$819.99 AUD
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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
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$819.99 AUD
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
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$1,139.99 AUD
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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
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$1,139.99 AUD
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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
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$614.95 AUD
The S-One Helmet Mini Lifer Purple Matte is a purple protective helmet with ventilation holes, chin straps, and the "S1" logo on the side. It features EPS Fusion Foam for enhanced safety, making it a reliable multi-impact helmet. Image displaying the features of the S1 Lifer Helmet, including detailed information about its EPS Fusion Foam, sweat-absorbing liners, sizing guidelines, and a helmet size chart based on head circumference. Additionally, check out the S-One Helmet Mini Lifer Purple Matte for a compact option with the same top-notch protection.
S-One Helmet Mini Lifer Purple Matte
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$99.99 AUD
The S-One Helmet Mega Lifer Dark Grey Matte features ventilation holes, adjustable straps, a white S1 logo on the side, and is Australian-certified for high-impact protection. The S-One Helmet Mega Lifer Dark Grey Matte features ventilation holes, a matte finish, and an adjustable chin strap for high-impact protection and comfort.
S-One Helmet Mega Lifer Dark Grey Matte
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$129.99 AUD
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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

$149.99 AUD

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$164.99 AUD
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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

$159.99 AUD

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$164.99 AUD
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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

$159.99 AUD

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$164.99 AUD
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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
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$1,099.99 AUD
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A TLD D4 Carbon AS Helmet W/MIPS SRAM Red / Black, featuring the MIPS Brain Protection System. A TLD D4 Carbon AS Helmet W/MIPS SRAM Red / Black with a checkered design on it.
TLD D4 Carbon AS Helmet W/MIPS SRAM Red / Black
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$1,099.99 AUD
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A TLD D4 Carbon AS Helmet W/MIPS Ever Black / Gold with a white background. A TLD D4 Carbon AS Helmet W/MIPS Ever Black / Gold motorcycle helmet with a white background.
TLD D4 Carbon AS Helmet W/MIPS Ever Black / Gold
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$1,099.99 AUD
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A TLD D4 Carbon AS Helmet W/MIPS Omega Black / Yellow with a yellow and black design. A TLD D4 Carbon AS helmet with a black and yellow design.
TLD D4 Carbon AS Helmet W/MIPS Omega Black / Yellow
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$1,099.99 AUD
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A TLD D4 AS Composite Helmet W/MIPS Omega Blue / White with a red, blue, and yellow design. A TLD D4 AS Composite Helmet W/MIPS Omega Blue / White with a blue and yellow design and Mips protection system.
TLD D4 AS Composite Helmet W/MIPS Omega Blue / White
From

$784.99 AUD
The TLD D4 AS Composite Helmet W/MIPS Stealth Tarmac is shown on a white background. The TLD D4 AS Composite Helmet W/MIPS Stealth Tarmac is shown on a white background.
TLD D4 AS Composite Helmet W/MIPS Stealth Tarmac
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$784.99 AUD
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A TLD D4 AS Composite Helmet W/MIPS Pinned Red with Mips C2 protection system on a white background. A TLD D4 AS Composite Helmet W/MIPS Pinned Red with a white logo on it, featuring the MIPS C2 protection system for enhanced helmet safety.
TLD D4 AS Composite Helmet W/MIPS Pinned Red
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$784.99 AUD
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A TLD D4 AS Composite Helmet W/MIPS Reverb White with a blue and white design, featuring the Mips protection system for enhanced safety. A TLD D4 AS Composite Helmet W/MIPS Reverb White with a blue and white design featuring the Mips protection system.
TLD D4 AS Composite Helmet W/MIPS Reverb White
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$784.99 AUD
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A TLD D4 AS Composite Helmet W/MIPS Pinned Light Grey on a white background. A white and yellow TLD D4 AS Composite helmet with MIPS Pinned Light Grey protection system on a white background.
TLD D4 AS Composite Helmet W/MIPS Pinned Light Grey
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$784.99 AUD
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A TLD D4 AS Polyacrylite helmet with a black and red design, ensuring safety. A TLD D4 AS Polyacrylite Helmet W/MIPS Block Charcoal / Red with a black and red design.
TLD D4 AS Polyacrylite Helmet W/MIPS Block Charcoal / Red
From

$584.99 AUD
A TLD D4 AS Polyacrylite Helmet W/MIPS Shadow Olive by Troy Lee Designs. The TLD D4 AS Polyacrylite Helmet W/MIPS Shadow Olive is shown on a white background.
TLD D4 AS Polyacrylite Helmet W/MIPS Shadow Olive
From

$584.99 AUD
A safety helmet with a red, white, and blue TLD D4 AS Polyacrylite Helmet W/MIPS Block Blue / White. A safety helmet with a red, blue, and white TLD D4 AS Polyacrylite Helmet W/MIPS Block Blue / White.
TLD D4 AS Polyacrylite Helmet W/MIPS Block Blue / White
From

$584.99 AUD