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Lazer Sphere MIPS Helmet White/Black
60% Off Full Price

Lazer

Lazer Sphere MIPS Helmet White/Black

Regular price $98.00 Full price
Sale price $98.00
Club price
Regular price $249.99 Full price
Size
Translation missing: en.products.product.variant_options
Giro Chronicle MIPS Helmet Matt Black
27% Off Full Price

Giro

Giro Chronicle MIPS Helmet Matt Black

Regular price $145.00 Full price
Sale price $145.00
Club price
Regular price $199.99 Full price
Size
Translation missing: en.products.product.variant_options
Giro Helios Spherical Helmet White/Silver
31% Off Full Price

Giro

Giro Helios Spherical Helmet White/Silver

Regular price $289.00 Full price
Sale price $289.00
Club price
Regular price $419.99 Full price
Size
Translation missing: en.products.product.variant_options
100% Altec Helmet Black
30% Off Full Price

100%

100% Altec Helmet Black

Regular price $188.00 Full price
Sale price $188.00
Club price
Regular price $269.99 Full price
Size
Translation missing: en.products.product.variant_options
Giro Aether Spherical Helmet Black/Electric Purple
40% Off Full Price

Giro

Giro Aether Spherical Helmet Black/Electric Purple

Regular price $299.00 Full price
Sale price $299.00
Club price
Regular price $499.99 Full price
Bell Super DH Mips Fullface Helmet Matte Blue/Crimson
MIPS

Bell

Bell Super DH Mips Fullface Helmet Matte Blue/Crimson

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
MET Idolo Helmet Safety Yellow
48% Off Full Price

Met

MET Idolo Helmet Safety Yellow

Regular price $49.00 Full price
Sale price $49.00
Club price
Regular price $94.99 Full price
Size
Translation missing: en.products.product.variant_options

Bluegrass

Bluegrass Super Bold Helmet Matt Black

Regular price $79.00 Full price
Sale price $79.00
Club price
Regular price $89.99 Full price
Size
Translation missing: en.products.product.variant_options
Lazer Sphere Helmet Titanium
52% Off Full Price

Lazer

Lazer Sphere Helmet Titanium

Regular price $99.00 Full price
Sale price $99.00
Club price
Regular price $209.99 Full price
Size
Translation missing: en.products.product.variant_options
Lazer Strada KinetiCore Helmet Black
68% Off Full Price

Lazer

Lazer Strada KinetiCore Helmet Black

Regular price $54.00 Full price
Sale price $54.00
Club price
Regular price $169.99 Full price
Size
Translation missing: en.products.product.variant_options
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
Bell Sidetrack II MIPS Kids Helmet Black
50% Off Full Price

Bell

Bell Sidetrack II MIPS Kids Helmet Black

Regular price $69.95 Full price
Sale price $69.95
Club price
Regular price $139.95 Full price
Size
Translation missing: en.products.product.variant_options
FOX Mainframe MIPS MTB Helmet Fluro Red 2025
MIPS

FOX

FOX Mainframe MIPS MTB Helmet Fluro Red 2025

Regular price $140.00 Full price
Sale price $140.00
Club price
Regular price $149.99 Full price
Size
Translation missing: en.products.product.variant_options
Bluegrass Super Bold Helmet Grey/Cyan
49% Off Full Price

Bluegrass

Bluegrass Super Bold Helmet Grey/Cyan

Regular price $45.00 Full price
Sale price $45.00
Club price
Regular price $89.99 Full price
Size
Translation missing: en.products.product.variant_options
100% Status Fullface Helmet Black
30% Off Full Price

100%

100% Status Fullface Helmet Black

Regular price $209.00 Full price
Sale price $209.00
Club price
Regular price $299.99 Full price
Size
Translation missing: en.products.product.variant_options
FOX Speedframe Pro Helmet Lunar Black 2023
26% Off Full Price

FOX

FOX Speedframe Pro Helmet Lunar Black 2023

Regular price $199.00 Full price
Sale price $199.00
Club price
Regular price $269.99 Full price
Size
Translation missing: en.products.product.variant_options
Lazer Cage Kineticore Fullface Helmet Matte Black
36% Off Full Price

Lazer

Lazer Cage Kineticore Fullface Helmet Matte Black

Regular price $287.00 Full price
Sale price $287.00
Club price
Regular price $449.95 Full price
Size
Translation missing: en.products.product.variant_options
FOX Crossframe Pro MIPS Helmet Matt Black 2025
MIPS

FOX

FOX Crossframe Pro MIPS Helmet Matt Black 2025

Regular price $286.00 Full price
Sale price $286.00
Club price
Regular price $299.99 Full price
Size
Translation missing: en.products.product.variant_options
Bell Sidetrack II Kids Helmet Hi-Viz/Red
50% Off Full Price

Bell

Bell Sidetrack II Kids Helmet Hi-Viz/Red

Regular price $49.95 Full price
Sale price $49.95
Club price
Regular price $99.95 Full price
Size
Translation missing: en.products.product.variant_options
Bell Sidetrack II Kids Helmet Black
50% Off Full Price

Bell

Bell Sidetrack II Kids Helmet Black

Regular price $49.95 Full price
Sale price $49.95
Club price
Regular price $99.95 Full price
Size
Translation missing: en.products.product.variant_options
MET Manta MIPS Helmet White
MIPS Coming Soon

Met

MET Manta MIPS Helmet White

Regular price $380.00 Full price
Sale price $380.00
Club price
Regular price $399.95 Full price
Size
Translation missing: en.products.product.variant_options
Lazer CityZen KinetiCore Commuter Helmet White
35% Off Full Price

Lazer

Lazer CityZen KinetiCore Commuter Helmet White

Regular price $58.00 Full price
Sale price $58.00
Club price
Regular price $89.99 Full price
Size
Translation missing: en.products.product.variant_options

Met

MET Echo Helmet Olive

Regular price $89.00 Full price
Sale price $89.00
Club price
Regular price $99.95 Full price
Size
Translation missing: en.products.product.variant_options

Met

MET Codatronca Triathlon Helmet White/Silver

Regular price $449.96 Full price
Sale price $449.96
Club price
Regular price $499.95 Full price
Size
Translation missing: en.products.product.variant_options
Lazer Tonic MIPS Helmet White
42% Off Full Price

Lazer

Lazer Tonic MIPS Helmet White

Regular price $80.00 Full price
Sale price $80.00
Club price
Regular price $139.99 Full price
Size
Translation missing: en.products.product.variant_options
100% Altec Helmet Neon Orange
29% Off Full Price

100%

100% Altec Helmet Neon Orange

Regular price $189.00 Full price
Sale price $189.00
Club price
Regular price $270.00 Full price
Size
Translation missing: en.products.product.variant_options
FOX Crossframe Pro MIPS Helmet Olive Green 2023
66% Off Full Price

FOX

FOX Crossframe Pro MIPS Helmet Olive Green 2023

Regular price $99.00 Full price
Sale price $99.00
Club price
Regular price $299.99 Full price
Size
Translation missing: en.products.product.variant_options
Bell Sixer Mips Helmets Mat/Gloss Black
41% Off Full Price

Bell

Bell Sixer Mips Helmets Mat/Gloss Black

Regular price $175.00 Full price
Sale price $175.00
Club price
Regular price $299.99 Full price
Size
Translation missing: en.products.product.variant_options
Bluegrass Super Bold Helmet Matt Pink
38% Off Full Price

Bluegrass

Bluegrass Super Bold Helmet Matt Pink

Regular price $55.00 Full price
Sale price $55.00
Club price
Regular price $89.99 Full price
Size
Translation missing: en.products.product.variant_options
Fox Speedframe MIPS MTB Helmet Military 2025
MIPS

FOX

Fox Speedframe MIPS MTB Helmet Military 2025

Regular price $179.00 Full price
Sale price $179.00
Club price
Regular price $199.99 Full price
Size
Translation missing: en.products.product.variant_options
FOX Speedframe MIPS Helmet Maroon 2023
MIPS

FOX

FOX Speedframe MIPS Helmet Maroon 2023

Regular price $179.00 Full price
Sale price $179.00
Club price
Regular price $199.99 Full price
Size
Translation missing: en.products.product.variant_options
Lazer Chiru MIPS Helmet Matte White
MIPS

Lazer

Lazer Chiru MIPS Helmet Matte White

Regular price $109.00 Full price
Sale price $109.00
Club price
Regular price $119.99 Full price
Size
Translation missing: en.products.product.variant_options
MET Trenta MIPS Helmet White
17% Off Full Price Coming SoonComing Soon

Met

MET Trenta MIPS Helmet White

Regular price $329.00 Full price
Sale price $329.00
Club price
Regular price $399.95 Full price
Size
Translation missing: en.products.product.variant_options
Bluegrass Super Bold Helmet Cyan
38% Off Full Price

Bluegrass

Bluegrass Super Bold Helmet Cyan

Regular price $55.00 Full price
Sale price $55.00
Club price
Regular price $89.99 Full price
Size
Translation missing: en.products.product.variant_options
Bluegrass Rogue MIPS MTB Helmet Black Iridescent
34% Off Full Price

Met

Bluegrass Rogue MIPS MTB Helmet Black Iridescent

Regular price $150.00 Full price
Sale price $150.00
Club price
Regular price $229.95 Full price
Size
Translation missing: en.products.product.variant_options
Bluegrass Rogue MIPS Helmet Titanium Tie-Dye
MIPS

Bluegrass

Bluegrass Rogue MIPS Helmet Titanium Tie-Dye

Regular price $220.00 Full price
Sale price $220.00
Club price
Regular price $229.95 Full price
Size
Translation missing: en.products.product.variant_options

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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