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.

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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 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
From

$99.99 AUD
The TSG Nipper Maxi Helmet in Satin Cabernet is a maroon youth helmet featuring lightweight construction, ventilation holes, adjustable fit chin straps, and a small "tsg" logo on the side. The TSG Nipper Maxi Helmet in Satin Cabernet is a matte burgundy youth helmet with ventilation holes, brown adjustable chin straps, and a white "tsg" logo—lightweight and perfect for young skaters seeking comfort and style.
TSG Nipper Maxi Helmet / Satin Cabernet
From

$114.99 AUD
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
From

$114.99 AUD
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
From

$114.99 AUD
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
From

$124.99 AUD
The TSG Dawn Flex Full Cut Helmet in mustard offers retro style with ventilation holes, hardshell construction, and an adjustable black chin strap—ideal for sports or outdoor activities. A TSG Dawn Flex Full Cut Helmet in mustard, with hardshell construction, ventilation slots, and an adjustable black chin strap, is displayed from the side against a white background.
TSG Dawn Flex Full Cut Helmet / Mustard
From

$99.99 AUD
The TSG Dawn Flex Full Cut Helmet in red features a glossy finish, hardshell construction, ventilation holes, and an adjustable black chin strap for skateboarding safety. The TSG Dawn Flex Full Cut Helmet in red has hardshell construction, ventilation slots, and a black chin strap. Shown from the side on a white background.
TSG Dawn Flex Full Cut Helmet / Red
From

$99.99 AUD
The TSG Dawn Flex Full Cut Helmet in white features black interior padding, a red adjustable chin strap, ventilation slots, soft-fit comfort for a secure feel, ear protection, and the TSG logo on the front. TSG Dawn Flex Full Cut Helmet in white, featuring ventilation holes and a red adjustable chin strap for soft-fit comfort, displayed in side profile against a plain background.
TSG Dawn Flex Full Cut Helmet / White
From

$129.99 AUD
The TSG Prevention Helmet Satin Black features a visor, advanced ventilation system with side vents, and an adjustable chin strap, shown against a white background. The TSG Prevention Helmet Satin Black features a matte finish, visor, angular vents, side cutout, adjustable chin strap, “Technical Safety Gear” text on the side, and a ventilation system ideal for BMX riders.
TSG Prevention Helmet Satin Black
From

$249.99 AUD
The Bell Sanction 2 DLX MIPS Fast House Matte Black is a lightweight full-face motocross helmet with a visor, featuring MIPS technology for enhanced safety. The Bell Sanction 2 DLX MIPS Fast House provides a sleek black full-face helmet for BMX racing, complete with MIPS technology, a tinted visor, and multiple ventilation openings.
Bell Sanction 2 DLX MIPS Fast House Matte Black
From

$279.99 AUD
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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
From

$589.99 AUD
The TLD D4 Polyacrylite Helmet (MIPS) in Shadow Black features a polyacrylite shell, white and red graphics, a visor, and full-face coverage. Check out the Troy Lee Designs size chart for the TLD D4 Polyacrylite Helmet (MIPS) in Shadow Black. Offering sizes XS to 3XL, these full-face helmets, featuring a Polyacrylite shell and Mips® C2 brain protection, are ideal for bike and motocross enthusiasts seeking excellent safety.
TLD D4 Polyacrylite Helmet (MIPS) / Shadow Black
From

$589.99 AUD
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
From

$589.99 AUD
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
From

$589.99 AUD
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
From

$589.99 AUD
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
From

$589.99 AUD
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
From

$819.99 AUD
The TLD 25.1 D4 Composite Helmet (MIPS) in Stealth Caper is a matte brown full-face helmet with geometric patterns, ventilation openings, and an integrated visor; designed for safety on downhill adventures with MIPS protection. Explore the right fit with our helmet size chart for full-face helmets, detailing head circumference in centimeters. The TLD 25.1 D4 Composite Helmet (MIPS) / Stealth Caper is featured, ranging from XS to 2XL—ideal for those seeking downhill helmets with or without MIPS protection!.
TLD 25.1 D4 Composite Helmet (MIPS) / Stealth Caper
From

$789.99 AUD
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
From

$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
From

$819.99 AUD
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
From

$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
From

$1,139.99 AUD
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
From

$1,139.99 AUD
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
From

$614.95 AUD