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100% Status Fullface Helmet Black
30% Off Full Price Clearance

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
MET Manta MIPS Helmet Black
MIPS

Met

MET Manta MIPS Helmet Black

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
Seven iDP Project23 ABS Full Face Helmet Black
38% Off Full Price Clearance

Seven 7iDP

Seven iDP Project23 ABS Full Face Helmet Black

Regular price $172.00 Full price
Sale price $172.00
Club price
Regular price $279.95 Full price
Size
Translation missing: en.products.product.variant_options
FOX Dropframe Pro Runn MTB Helmet Olive Green
37% Off Full Price Clearance

FOX

FOX Dropframe Pro Runn MTB Helmet Olive Green

Regular price $249.00 Full price
Sale price $249.00
Club price
Regular price $399.99 Full price
Size
Translation missing: en.products.product.variant_options
Bluegrass Superbold BMX Helmet Solar Grey Matt

Bluegrass

Bluegrass Superbold BMX Helmet Solar Grey Matt

Regular price $79.00 Full price
Sale price $79.00
Club price
Regular price $89.95 Full price
MET Idolo Road Helmet Black
10% Off Full Price

Met

MET Idolo Road Helmet Black

Regular price $98.00 Full price
Sale price $98.00
Club price
Regular price $109.95 Full price
Size
Translation missing: en.products.product.variant_options
MET Terranova MIPS Helmet Black/Matt Glossy
37% Off Full Price Clearance

Met

MET Terranova MIPS Helmet Black/Matt Glossy

Regular price $125.00 Full price
Sale price $125.00
Club price
Regular price $199.95 Full price
Size
Translation missing: en.products.product.variant_options
Giro Scamp MIPS II Kids Helmet Matte Blue/Jewel Green Fade
MIPS

Giro

Giro Scamp MIPS II Kids Helmet Matte Blue/Jewel Green Fade

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
FOX Speedframe Helmet AS Black 2024

FOX

FOX Speedframe Helmet AS Black 2024

Regular price $174.00 Full price
Sale price $174.00
Club price
Regular price $199.99 Full price
Size
Translation missing: en.products.product.variant_options
Met Crossover Helmet Lime Yellow Metallic

Met

Met Crossover Helmet Lime Yellow Metallic

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
Fox Speedframe 5050 MIPS MTB Helmet Black/White 2025
MIPS

FOX

Fox Speedframe 5050 MIPS MTB Helmet Black/White 2025

Regular price $180.00 Full price
Sale price $180.00
Club price
Regular price $199.99 Full price
Size
Translation missing: en.products.product.variant_options
Giro Isode II MIPS MTB Helmet Matte Sky Blue UNI 54-61cm 2025
MIPS

Giro

Giro Isode II MIPS MTB Helmet Matte Sky Blue UNI 54-61cm 2025

Regular price $120.00 Full price
Sale price $120.00
Club price
Regular price $139.99 Full price
FOX Proframe Full Face MTB Helmet Matt Black 2024
26% Off Full Price Clearance

FOX

FOX Proframe Full Face MTB Helmet Matt Black 2024

Regular price $329.00 Full price
Sale price $329.00
Club price
Regular price $449.99 Full price
Size
Translation missing: en.products.product.variant_options
MET Eldar Helmet Black Camo/Matt
14% Off Full Price

Met

MET Eldar Helmet Black Camo/Matt

Regular price $85.00 Full price
Sale price $85.00
Club price
Regular price $99.95 Full price
MET Codatronca Triathlon Helmet White/Silver

Met

MET Codatronca Triathlon Helmet White/Silver

Regular price $450.00 Full price
Sale price $450.00
Club price
Regular price $499.95 Full price
Size
Translation missing: en.products.product.variant_options
Giro Fixture II MIPS MTB Helmet UNI Titanium 2025
MIPS

Giro

Giro Fixture II MIPS MTB Helmet UNI Titanium 2025

Regular price $124.00 Full price
Sale price $124.00
Club price
Regular price $129.99 Full price
Lazer Compact Helmet Racing Green UNI 54-61cm
15% Off Full Price

Lazer

Lazer Compact Helmet Racing Green UNI 54-61cm

Regular price $59.00 Full price
Sale price $59.00
Club price
Regular price $69.95 Full price
Fox Speedframe Pro MIPS MTB Helmet Camo (Small)
26% Off Full Price

FOX

Fox Speedframe Pro MIPS MTB Helmet Camo (Small)

Regular price $199.00 Full price
Sale price $199.00
Club price
Regular price $269.99 Full price
Bell Full-10 Spherical MIPS Full Face MTB Helmet Arise Matte/Gloss Black
57% Off Full Price Clearance

Bell

Bell Full-10 Spherical MIPS Full Face MTB Helmet Arise Matte/Gloss Black

Regular price $445.00 Full price
Sale price $445.00
Club price
Regular price $1,049.95 Full price
Size
Translation missing: en.products.product.variant_options
Bell Full-10 Spherical MIPS Full Face MTB Helmet Fasthouse Happy Hour Grey/Black
57% Off Full Price Clearance

Bell

Bell Full-10 Spherical MIPS Full Face MTB Helmet Fasthouse Happy Hour Grey/Black

Regular price $445.00 Full price
Sale price $445.00
Club price
Regular price $1,049.95 Full price
Size
Translation missing: en.products.product.variant_options
Met Idolo Road Helmet Blue Metallic UNI

Met

Met Idolo Road Helmet Blue Metallic UNI

Regular price $98.00 Full price
Sale price $98.00
Club price
Regular price $109.95 Full price
Met Crackerjack Kids Helmet MIPS 52-57 cm Matt Green
MIPS

Met

Met Crackerjack Kids Helmet MIPS 52-57 cm Matt Green

Regular price $119.00 Full price
Sale price $119.00
Club price
Regular price $134.95 Full price
Lazer Finch Kineticore MTB Helmet Sedona Red

Lazer

Lazer Finch Kineticore MTB Helmet Sedona Red

Regular price $94.00 Full price
Sale price $94.00
Club price
Regular price $99.95 Full price
Giro Scamp II Kids Helmet Pink

Giro

Giro Scamp II Kids Helmet Pink

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
Fox Speedframe Pro Klif MIPS MTB Helmet Fluro Red 2024
MIPS

FOX

Fox Speedframe Pro Klif MIPS MTB Helmet Fluro Red 2024

Regular price $253.00 Full price
Sale price $253.00
Club price
Regular price $269.99 Full price
Size
Translation missing: en.products.product.variant_options
Fox Speedframe MIPS MTB Helmet Camo/Black 2025
20% Off Full Price Clearance

FOX

Fox Speedframe MIPS MTB Helmet Camo/Black 2025

Regular price $159.00 Full price
Sale price $159.00
Club price
Regular price $199.99 Full price
Size
Translation missing: en.products.product.variant_options
Met Crackerjack Kids Helmet MIPS 52-57 cm Matt Cyan
MIPS

Met

Met Crackerjack Kids Helmet MIPS 52-57 cm Matt Cyan

Regular price $119.00 Full price
Sale price $119.00
Club price
Regular price $134.95 Full price
Raven BMX Helmet Satin Teal

Raven

Raven BMX Helmet Satin Teal

Regular price $45.00 Full price
Sale price $45.00
Club price
Regular price $49.99 Full price
Size
Translation missing: en.products.product.variant_options
Fox Rampage Comp MIPS Fullface Helmet Matte Black

FOX

Fox Rampage Comp MIPS Fullface Helmet Matte Black

Regular price $469.00 Full price
Sale price $469.00
Club price
Regular price $499.99 Full price
Size
Translation missing: en.products.product.variant_options
Fox Rampage MIPS Fullface MTB Helmet Black/Grey Camo

FOX

Fox Rampage MIPS Fullface MTB Helmet Black/Grey Camo

Regular price $360.00 Full price
Sale price $360.00
Club price
Regular price $399.99 Full price
Size
Translation missing: en.products.product.variant_options
Giro Escape MIPS Helmet Matte White 2025
MIPS

Giro

Giro Escape MIPS Helmet Matte White 2025

Regular price $230.00 Full price
Sale price $230.00
Club price
Regular price $249.99 Full price
Size
Translation missing: en.products.product.variant_options
FOX Speedframe Pro Helmet Block Grey/Black 2023
44% Off Full Price Clearance MIPS

FOX

FOX Speedframe Pro Helmet Block Grey/Black 2023

Regular price $150.00 Full price
Sale price $150.00
Club price
Regular price $269.99 Full price
Size
Translation missing: en.products.product.variant_options
Bluegrass Super Bold Helmet (Glossy/Black)
33% Off Full Price Clearance

Bluegrass

Bluegrass Super Bold Helmet (Glossy/Black)

Regular price $60.00 Full price
Sale price $60.00
Club price
Regular price $89.99 Full price
Size
Translation missing: en.products.product.variant_options
MET Echo MIPS Helmet Matt Black
37% Off Full Price Clearance MIPS

Met

MET Echo MIPS Helmet Matt Black

Regular price $85.00 Full price
Sale price $85.00
Club price
Regular price $134.95 Full price
Size
Translation missing: en.products.product.variant_options
Fox Speedframe Pro MIPS MTB Helmet Black/Green 50 Years Edition
33% Off Full Price

FOX

Fox Speedframe Pro MIPS MTB Helmet Black/Green 50 Years Edition

Regular price $199.00 Full price
Sale price $199.00
Club price
Regular price $299.99 Full price
Size
Translation missing: en.products.product.variant_options
Fox Speedframe Pro Backfade MIPS MTB Helmet Blue/Grey (Small)
33% Off Full Price

FOX

Fox Speedframe Pro Backfade MIPS MTB Helmet Blue/Grey (Small)

Regular price $199.00 Full price
Sale price $199.00
Club price
Regular price $299.99 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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