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Bike Helmets

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Bell Sidetrack II MIPS Kids Helmet White/Stars
50% Off Full Price

Bell

Bell Sidetrack II MIPS Kids Helmet White/Stars

Regular price $69.95 Full price
Sale price $69.95
Club price
Regular price $139.99 Full price
Size
Translation missing: en.products.product.variant_options

Lazer

Lazer Coyote Kineticore Helmet Matte Black

Regular price $139.00 Full price
Sale price $139.00
Club price
Regular price $159.95 Full price
Size
Translation missing: en.products.product.variant_options

Lazer

Lazer Coyote KC Helmet Matte Light/Blue

Regular price $139.00 Full price
Sale price $139.00
Club price
Regular price $159.95 Full price
Size
Translation missing: en.products.product.variant_options

Lazer

Lazer Coyote Kineticore Helmet Matte Cali

Regular price $139.00 Full price
Sale price $139.00
Club price
Regular price $159.95 Full price
Size
Translation missing: en.products.product.variant_options
Giro Synthe MIPS II Helmet Matte Black
20% Off Full Price

Giro

Giro Synthe MIPS II Helmet Matte Black

Regular price $285.00 Full price
Sale price $285.00
Club price
Regular price $359.99 Full price
Size
Translation missing: en.products.product.variant_options
Giro Aether MIPS Road Helmet White/Silver
19% Off Full Price

Giro

Giro Aether MIPS Road Helmet White/Silver

Regular price $400.00 Full price
Sale price $400.00
Club price
Regular price $499.99 Full price
Size
Translation missing: en.products.product.variant_options
FOX Mainframe MIPS Helmet White 2024
MIPS

FOX

FOX Mainframe MIPS Helmet White 2024

Regular price $125.00 Full price
Sale price $125.00
Club price
Regular price $139.99 Full price
Size
Translation missing: en.products.product.variant_options

100%

100% Altec Helmet Black

Regular price $243.00 Full price
Sale price $243.00
Club price
Regular price $269.99 Full price
Size
Translation missing: en.products.product.variant_options
FOX Mainframe MIPS Helmet Fluoro Red 2024
MIPS

FOX

FOX Mainframe MIPS Helmet Fluoro Red 2024

Regular price $125.00 Full price
Sale price $125.00
Club price
Regular price $139.99 Full price
Size
Translation missing: en.products.product.variant_options
Bell 4Forty AIR MIPS MTB Helmet Red/Ocean 52-56cm
50% Off Full Price

Bell

Bell 4Forty AIR MIPS MTB Helmet Red/Ocean 52-56cm

Regular price $124.00 Full price
Sale price $124.00
Club price
Regular price $249.99 Full price
FOX Mainframe MIPS Helmet Fluoro Yellow 2024
MIPS

FOX

FOX Mainframe MIPS Helmet Fluoro Yellow 2024

Regular price $125.00 Full price
Sale price $125.00
Club price
Regular price $139.99 Full price
Size
Translation missing: en.products.product.variant_options
Bell Spark 2 MIPS MTB Helmet Matte Black
20% Off Full Price

Bell

Bell Spark 2 MIPS MTB Helmet Matte Black

Regular price $119.00 Full price
Sale price $119.00
Club price
Regular price $149.99 Full price
Size
Translation missing: en.products.product.variant_options
FOX Mainframe MIPS Youth Helmet Black 2024
MIPS

FOX

FOX Mainframe MIPS Youth Helmet Black 2024

Regular price $118.00 Full price
Sale price $118.00
Club price
Regular price $129.99 Full price
Size
Translation missing: en.products.product.variant_options
FOX Mainframe Youth MIPS Helmet Fluorescent Red 2024
MIPS

FOX

FOX Mainframe Youth MIPS Helmet Fluorescent Red 2024

Regular price $118.00 Full price
Sale price $118.00
Club price
Regular price $129.99 Full price
Bell Super DH Mips Helmet Matte/Gloss Black
MIPS

Bell

Bell Super DH Mips Helmet Matte/Gloss Black

Regular price $499.00 Full price
Sale price $499.00
Club price
Regular price $529.99 Full price
Size
Translation missing: en.products.product.variant_options

Lazer

Lazer Coyote KC Helmet Matte Dark/Green

Regular price $139.00 Full price
Sale price $139.00
Club price
Regular price $159.95 Full price
Size
Translation missing: en.products.product.variant_options
MET Rivale II MIPS Helmet Red
15% Off Full Price

Met

MET Rivale II MIPS Helmet Red

Regular price $229.00 Full price
Sale price $229.00
Club price
Regular price $269.95 Full price
Size
Translation missing: en.products.product.variant_options
Giro Source MIPS Helmet Potaro Grey
30% Off Full Price

Giro

Giro Source MIPS Helmet Potaro Grey

Regular price $174.00 Full price
Sale price $174.00
Club price
Regular price $249.99 Full price
Size
Translation missing: en.products.product.variant_options

FOX

FOX Rampage Fullface Helmet Black/Black 2023

Regular price $289.00 Full price
Sale price $289.00
Club price
Regular price $299.99 Full price
Size
Translation missing: en.products.product.variant_options
Helmets Lazer Bob+ Toddler Helmet Clouds UNI 46-52cm
23% Off Full Price

Lazer

Helmets Lazer Bob+ Toddler Helmet Clouds UNI 46-52cm

Regular price $38.00 Full price
Sale price $38.00
Club price
Regular price $49.95 Full price

Met

Met Universal Replacement Helmet Pads

Regular price $23.00 Full price
Sale price $23.00
Club price
Regular price $24.95 Full price
Fullface Bell Sanction Matte Red/Black
15% Off Full Price

Bell

Fullface Bell Sanction Matte Red/Black

Regular price $169.00 Full price
Sale price $169.00
Club price
Regular price $199.99 Full price
Size
Translation missing: en.products.product.variant_options
POC Otocon Full Face MTB Helmet Uranium Matte Black
42% Off Full Price

POC

POC Otocon Full Face MTB Helmet Uranium Matte Black

Regular price $245.00 Full price
Sale price $245.00
Club price
Regular price $424.99 Full price
Size
Translation missing: en.products.product.variant_options
Lazer Jackal MIPS Helmet Black
40% Off Full Price

Lazer

Lazer Jackal MIPS Helmet Black

Regular price $178.00 Full price
Sale price $178.00
Club price
Regular price $299.99 Full price
Size
Translation missing: en.products.product.variant_options

100%

100% Altis Helmet Grey

Regular price $179.00 Full price
Sale price $179.00
Club price
Regular price $189.99 Full price
Size
Translation missing: en.products.product.variant_options

Giro

Giro Syntax Helmet Pads

Regular price $15.46 Full price
Sale price $15.46
Club price
Regular price $14.99 Full price
Bell Super 3R/2R Chinbar Matte Black
35% Off Full Price

Bell

Bell Super 3R/2R Chinbar Matte Black

Regular price $97.00 Full price
Sale price $97.00
Club price
Regular price $149.99 Full price
Size
Translation missing: en.products.product.variant_options

FOX

FOX RPC MIPS Repeater Fullface Helmet Matte Carbon 2024

Regular price $749.00 Full price
Sale price $749.00
Club price
Regular price $799.99 Full price
Size
Translation missing: en.products.product.variant_options
Bell Sixer MIPS Fasthouse MTB Helmet Black/Gold
41% Off Full Price

Bell

Bell Sixer MIPS Fasthouse MTB Helmet Black/Gold

Regular price $176.00 Full price
Sale price $176.00
Club price
Regular price $299.99 Full price
Size
Translation missing: en.products.product.variant_options

Met

Met Rivale II Replacment Helmet Pads

Regular price $28.00 Full price
Sale price $28.00
Club price
Regular price $29.95 Full price

Seven 7iDP

Seven iDP Project23 ABS Full Face Helmet Black

Regular price $249.00 Full price
Sale price $249.00
Club price
Regular price $279.95 Full price
Size
Translation missing: en.products.product.variant_options

Met

Met Miles Replacment Helmet Pads

Regular price $23.00 Full price
Sale price $23.00
Club price
Regular price $24.95 Full price

100%

100% Status Youth Fullface Helmet Dreamflow Black

Regular price $287.00 Full price
Sale price $287.00
Club price
Regular price $319.95 Full price
Size
Translation missing: en.products.product.variant_options
Bell Z20 MIPS Road Helmet Helmet Matte/Gloss Grey/Crimson
59% Off Full Price

Bell

Bell Z20 MIPS Road Helmet Helmet Matte/Gloss Grey/Crimson

Regular price $134.00 Full price
Sale price $134.00
Club price
Regular price $329.99 Full price
Size
Translation missing: en.products.product.variant_options

Lazer

Lazer Vento KinetiCore Road Helmet Matte White (SM 52-56cm)

Regular price $400.00 Full price
Sale price $400.00
Club price
Regular price $439.95 Full price
Bell 4Forty MIPS MTB Helmet Red/Ocean 52-56cm
40% Off Full Price

Bell

Bell 4Forty MIPS MTB Helmet Red/Ocean 52-56cm

Regular price $119.00 Full price
Sale price $119.00
Club price
Regular price $199.99 Full price

Find Your Size

Step 1: Measure your height

  • Take off your shoes
  • Stand with your back straight against a wall
  • Balance a book on your head to mark your height on the wall
  • Measure your height by the distance from the floor to the mark
cm

Find Your Size

Step 2: Adjust your inseam

  • Based on your height, we’ve calculated a starting point.
  • You can measure your inseam by tucking a book between your legs so there is pressure but it isn’t uncomfortable.
  • Inseam typically falls with 5cm of the average.
cm

Find Your Size

Your results

For the we suggest the following size.

More comfort More speed
Height: --
Inseam: --
Adjusted Height: --

Find Your Size

We have saved your measurements.

Recommended sizes will now be highlighted on the page.

Huge Range of Bike Helmets

Beyond providing safety, your helmet should also be comfortable and suitable for the style of riding you'll be doing. At 99 Bikes, we carry a huge range of helmets from the best brands.

Popular Types of Helmets

Kids Helmets

BMX & Skate Helmets

Mountain Bike Helmets

Full Face Bike Helmets

Road Bike Helmets

Recreational Helmets

Helmets Under $200

Kids Helmets

When buying a kids bike helmet parents need to consider two factors - firstly, safety and secondly, picking a design that your kids will love to wear. 99 Bikes range includes; baby helmets, toddler bike helmets, kids helmets, and youth helmets.

Mountain Bike Helmets

Otherwise known as MTB helmets, these generally feature a front visor for extra sun protection and extra protection around the rear of the helmet for additional impact protection on those rougher trails.

BMX Helmets

Otherwise known as street bike helmets, these deliver both safety for stacks at the skatepark and style to make that landing look so much sweeter, with BMX and skate helmets being designed for safety, style and comfort.

Road Helmets

If you’re donning the lycra and hitting the bitumen, look for road cycling helmets that are lightweight and have plenty of air vents to promote airflow around your head and keep you nice and cool on longer rides. Or, for the competitive rider our range of aero bike helmets are great in helping to reduce wind drag.

Full Face Helmets

Full face bike helmets provide the ultimate protection if you’re going to be doing any form of downhill mountain biking amongst unforgiving obstacles, they offer safety towards the front of the helmet and added top and back making them more expensive than traditional mountain bike helmets.

Bike Helmets Buying Guide

By law, every cyclist is required to wear a helmet which complies with Australia's strict safety standards. As well as being safe, your helmet also needs to be comfortable and suited to the type of riding you'll be doing. Read our buying guide ot understand the main types of helmets and how to pick which model is right for you.

Frequently asked questions

Our staff are well-known for being the most friendly, knowledgeable and professional bike experts, and will help you with any questions you may have. Here are some of the most common:

What size helmet should I buy?

A well-fitting helmet should be snug but not uncomfortable. To determine what size you’ll need, simply measure the circumference of your head using a piece of string placed about 3 cm above your eyebrows. As a guide, you can start with the below for the Azur L61, one of our most popular helmets:

Always check the sizing for an individual helmet under the Details tab on our pages, or check with one of our bike experts.

What is MIPS?

Multi-directional Impact Protection System (MIPS) is designed to reduce rotational motion that occur due to certain types of impacts. By allowing the head to move inside the helmet, the amount of harmful rotational motion is reduced. You can spot a MIPS helmet by the yellow liner beneath the pads when you look inside in the helmet.

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