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Bell 4Forty Mips Helmet Mat/Gloss Black
42% Off Full Price

Bell

Bell 4Forty Mips Helmet Mat/Gloss Black

Regular price $115.00 Full price
Sale price $115.00
Club price
Regular price $199.99 Full price
Size
Translation missing: en.products.product.variant_options
MET Terranova MIPS Helmet Black/Matt Glossy
32% Off Full Price

Met

MET Terranova MIPS Helmet Black/Matt Glossy

Regular price $135.00 Full price
Sale price $135.00
Club price
Regular price $199.95 Full price
Size
Translation missing: en.products.product.variant_options
Lazer Compact Helmet Yellow
15% Off Full Price

Lazer

Lazer Compact Helmet Yellow

Regular price $59.00 Full price
Sale price $59.00
Club price
Regular price $69.95 Full price
MET Echo MIPS Helmet Matt Black
MIPS

Met

MET Echo MIPS Helmet Matt Black

Regular price $119.00 Full price
Sale price $119.00
Club price
Regular price $134.95 Full price
Size
Translation missing: en.products.product.variant_options
FOX Proframe Clyzo AS MTB Helmet Atomic Orange 2024
27% Off Full Price

FOX

FOX Proframe Clyzo AS MTB Helmet Atomic Orange 2024

Regular price $328.00 Full price
Sale price $328.00
Club price
Regular price $449.99 Full price
Size
Translation missing: en.products.product.variant_options
FOX Proframe Race Energy Youth MTB Helmet Black
28% Off Full Price

FOX

Fox Proframe Nace Energy Youth MIPS Fullface MTB Helmet Black

Regular price $285.00 Full price
Sale price $285.00
Club price
Regular price $399.99 Full price
Size
Translation missing: en.products.product.variant_options

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
Bell 4Forty MIPS Air MTB Helmet Grey/Red
50% Off Full Price

Bell

Bell 4Forty MIPS Air MTB Helmet Grey/Red

Regular price $124.00 Full price
Sale price $124.00
Club price
Regular price $249.99 Full price
Size
Translation missing: en.products.product.variant_options

Bluegrass

Bluegrass Super Bold Helmet Green Matt

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
MET Terranova MIPS MTB Helmet Off-White/Bronze
40% Off Full Price

Met

MET Terranova MIPS MTB Helmet Off-White/Bronze

Regular price $119.00 Full price
Sale price $119.00
Club price
Regular price $199.95 Full price
Size
Translation missing: en.products.product.variant_options

Lazer

Lazer Lupo MTB Helmet Matte Fern

Regular price $94.00 Full price
Sale price $94.00
Club price
Regular price $99.95 Full price
Bell XR Spherical MIPS Road Helmet Black
50% Off Full Price

Bell

Bell XR Spherical MIPS Road Helmet Black

Regular price $189.95 Full price
Sale price $189.95
Club price
Regular price $379.95 Full price
Size
Translation missing: en.products.product.variant_options
Giro Quarter Helmet Matte Black
16% Off Full Price

Giro

Giro Quarter Helmet Matte Black

Regular price $67.00 Full price
Sale price $67.00
Club price
Regular price $79.99 Full price
Size
Translation missing: en.products.product.variant_options
Bell Full-10 Spherical MIPS Full Face MTB Helmet Arise Matte/Gloss Black
$551 Off Full Price

Bell

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

Regular price $499.00 Full price
Sale price $499.00
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 Gloss White/Black
$551 Off Full Price

Bell

Bell Full-10 Spherical MIPS Full Face MTB Helmet Fasthouse Gloss White/Black

Regular price $499.00 Full price
Sale price $499.00
Club price
Regular price $1,049.95 Full price
Size
Translation missing: en.products.product.variant_options

Lazer

Lazer Finch Kineticore MTB Helmet UNI Matte White Mint

Regular price $94.00 Full price
Sale price $94.00
Club price
Regular price $99.95 Full price
Giro Aether Spherical Helmet Small Red/Dark Red
53% Off Full Price

Giro

Giro Aether Spherical Helmet Small Red/Dark Red

Regular price $234.00 Full price
Sale price $234.00
Club price
Regular price $499.99 Full price
Giro Syntax MIPS Helmet Matte White XL
32% Off Full Price

Giro

Giro Syntax MIPS Helmet Matte White XL

Regular price $148.00 Full price
Sale price $148.00
Club price
Regular price $219.99 Full price
Bell Z20 Mips Helmet Mat/Gloss Black
59% Off Full Price

Bell

Bell Z20 Mips Helmet Mat/Gloss Black

Regular price $149.00 Full price
Sale price $149.00
Club price
Regular price $369.99 Full price
Size
Translation missing: en.products.product.variant_options

FOX

FOX Proframe Clyzo AS MTB Helmet Cream 2024

Regular price $422.00 Full price
Sale price $422.00
Club price
Regular price $449.99 Full price
Size
Translation missing: en.products.product.variant_options
Lazer Cage Kineticore Fullface Helmet Matte Cobalt
36% Off Full Price

Lazer

Lazer Cage Kineticore Fullface Helmet Matte Cobalt

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

Bluegrass

Bluegrass Superbold BMX Helmet Grey Large

Regular price $79.00 Full price
Sale price $79.00
Club price
Regular price $89.95 Full price

Bluegrass

Bluegrass Superbold BMX Helmet Matte Grey

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
Bell Local Nitro Circus Helmet Navy/Silver
32% Off Full Price

Bell

Bell Local Nitro Circus Helmet Navy/Silver

Regular price $67.00 Full price
Sale price $67.00
Club price
Regular price $99.99 Full price
Size
Translation missing: en.products.product.variant_options
Bell Z20 MIPS Road Helmet Squid Black/Grey
50% Off Full Price

Bell

Bell Z20 MIPS Road Helmet Squid Black/Grey

Regular price $184.95 Full price
Sale price $184.95
Club price
Regular price $369.95 Full price
Size
Translation missing: en.products.product.variant_options
MET Parachute MCR Fullface Helmet Black/Matt
30% Off Full Price

Met

MET Parachute MCR Fullface Helmet Black/Matt

Regular price $349.00 Full price
Sale price $349.00
Club price
Regular price $499.95 Full price
Size
Translation missing: en.products.product.variant_options

Lazer

Lazer Lupo Kineticore MTB Helmet Uni Matte Flash Orange

Regular price $94.00 Full price
Sale price $94.00
Club price
Regular price $99.95 Full price
DRS Helmet Pink
18% Off Full Price

DRS

DRS Helmet Pink

Regular price $49.00 Full price
Sale price $49.00
Club price
Regular price $59.99 Full price
Size
Translation missing: en.products.product.variant_options
Giro Quarter Helmet Matte Chalk
16% Off Full Price

Giro

Giro Quarter Helmet Matte Chalk

Regular price $67.00 Full price
Sale price $67.00
Club price
Regular price $79.99 Full price
Size
Translation missing: en.products.product.variant_options
Giro Syntax MIPS Helmet Matt White
23% Off Full Price

Giro

Giro Syntax MIPS Helmet Matt White

Regular price $169.00 Full price
Sale price $169.00
Club price
Regular price $219.99 Full price
Size
Translation missing: en.products.product.variant_options
Bell 4Forty Mips Helmet Black/Camo
42% Off Full Price

Bell

Bell 4Forty Mips Helmet Black/Camo

Regular price $115.00 Full price
Sale price $115.00
Club price
Regular price $200.00 Full price
Size
Translation missing: en.products.product.variant_options
MET Veleno MIPS MTB Helmet Black Glossy/Matte
19% Off Full Price

Met

MET Veleno MIPS MTB Helmet Black Glossy/Matte

Regular price $168.00 Full price
Sale price $168.00
Club price
Regular price $209.95 Full price
Size
Translation missing: en.products.product.variant_options
Lazer Strada KinetiCore Helmet White
64% Off Full Price

Lazer

Lazer Strada KinetiCore Helmet White

Regular price $60.00 Full price
Sale price $60.00
Club price
Regular price $169.99 Full price
Size
Translation missing: en.products.product.variant_options

Met

Met Crossover Helmet Lime Yellow Metallic with LIGHT

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 MIPS MTB Helmet Green Camo 2024
MIPS

FOX

FOX Speedframe MIPS MTB Helmet Green Camo 2024

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

Bell

Bell Sidetrack II Kids Helmet White/Stars

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

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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