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Mountain Bike Helmets

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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
Fox Speedframe Pro MIPS MTB Helmet Lunar SM 2024
33% Off Full Price

FOX

Fox Speedframe Pro MIPS MTB Helmet Lunar SM 2024

Regular price $199.00 Full price
Sale price $199.00
Club price
Regular price $299.99 Full price
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 Chiru Helmet Matte Red
27% Off Full Price

Lazer

Lazer Chiru Helmet Matte Red

Regular price $65.00 Full price
Sale price $65.00
Club price
Regular price $89.99 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 $184.00 Full price
Sale price $184.00
Club price
Regular price $199.99 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
FOX Dropframe Pro MTB Helmet Black/White 2024
50% Off Full Price

FOX

FOX Dropframe Pro MTB Helmet Black/White 2024

Regular price $198.00 Full price
Sale price $198.00
Club price
Regular price $399.99 Full price
Size
Translation missing: en.products.product.variant_options
FOX Mainframe TRVRS MIPS Helmet Dark Maroon 2023
33% Off Full Price

FOX

FOX Mainframe TRVRS MIPS Helmet Dark Maroon 2023

Regular price $100.00 Full price
Sale price $100.00
Club price
Regular price $149.99 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
FOX Mainframe Youth MIPS Helmet Fluorescent Yellow 2024
26% Off Full Price

FOX

FOX Mainframe Youth MIPS Helmet Fluorescent Yellow 2024

Regular price $95.00 Full price
Sale price $95.00
Club price
Regular price $129.99 Full price
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

Lazer

Lazer Finch Kineticore Kids Helmet Fern Green UNI

Regular price $94.00 Full price
Sale price $94.00
Club price
Regular price $99.95 Full price

100%

100% Altec Helmet Neon Orange

Regular price $243.00 Full price
Sale price $243.00
Club price
Regular price $270.00 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
100% Altis Gravel Helmet Black
68% Off Full Price

100%

100% Altis Gravel Helmet Black

Regular price $60.01 Full price
Sale price $60.01
Club price
Regular price $190.00 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
Fox Speedframe AS MTB Helmet White 2024
20% Off Full Price

FOX

Fox Speedframe AS MTB Helmet White 2024

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
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
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
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
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

Lazer

Lazer Jackal KC Helmet Matt Turquoise

Regular price $289.00 Full price
Sale price $289.00
Club price
Regular price $329.95 Full price
Size
Translation missing: en.products.product.variant_options
Lazer Coyote Kineticore Helmet Titanium
32% Off Full Price

Lazer

Lazer Coyote Kineticore Helmet Titanium

Regular price $108.00 Full price
Sale price $108.00
Club price
Regular price $159.95 Full price
Size
Translation missing: en.products.product.variant_options
Giro Chronicle MIPS Helmet Grey Matt
27% Off Full Price

Giro

Giro Chronicle MIPS Helmet Grey Matt

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

Lazer

Lazer Finch Kineticore Kids Helmet Sedona Red UNI

Regular price $94.00 Full price
Sale price $94.00
Club price
Regular price $99.95 Full price

Giro

Giro Elixir Helmet Matte Black

Regular price $85.00 Full price
Sale price $85.00
Club price
Regular price $89.99 Full price
Bluegrass Rogue MIPS Helmet Titanium Tie-Dye Medium
34% Off Full Price

Bluegrass

Bluegrass Rogue MIPS Helmet Titanium Tie-Dye Medium

Regular price $150.00 Full price
Sale price $150.00
Club price
Regular price $229.95 Full price
FOX Dropframe Pro Helmet Black 2023
18% Off Full Price

FOX

FOX Dropframe Pro Helmet Black 2023

Regular price $244.00 Full price
Sale price $244.00
Club price
Regular price $299.99 Full price
Size
Translation missing: en.products.product.variant_options
100% Altis Gravel Helmet Grey
68% Off Full Price

100%

100% Altis Gravel Helmet Grey

Regular price $60.01 Full price
Sale price $60.01
Club price
Regular price $190.00 Full price
Size
Translation missing: en.products.product.variant_options
Lazer Coyote MIPS Helmet Matte Full Black
58% Off Full Price

Lazer

Lazer Coyote MIPS Helmet Matte Full Black

Regular price $78.00 Full price
Sale price $78.00
Club price
Regular price $189.99 Full price
Size
Translation missing: en.products.product.variant_options

TLD

TLD Flowline AS Orbit Helmet MIPS Black

Regular price $244.00 Full price
Sale price $244.00
Club price
Regular price $254.95 Full price
Size
Translation missing: en.products.product.variant_options

FOX

FOX Crossframe Pro Solids Helmet AS White 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

FOX

FOX Speedframe Pro Helmet Gloss Black/Matt Black 2023

Regular price $249.00 Full price
Sale price $249.00
Club price
Regular price $269.99 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

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

Met

MET Echo Helmet Black/Matt

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

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

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Recommended sizes will now be highlighted on the page.

Our Range of Mountain Bike Helmets For Sale

We have an awesome range of mountain bike helmets (MTB helmets), from all the best brands, at Australia's best prices. Mountain bike helmets like other helmets made for specific genre's of cycling are designed to improve performance and meet the demands of riders needs. In mountain biking there are many styles of riding and most will only require a standard mountain bike helmet which is designed for enduro, more demanding riding styles often require specially design helmets.

Under mountain bike helmets, there are a few subcategories of helmets including; XC mountain bike helmets (trail mountain bike helmets, half-shell helmets), All-mountain bike helmets (Open face mountain bike helmets), convertible mountain bike helmets, and full face mountain bike helmets (Downhill mountain bike helmets).

Like all quality cycling helmets, MTB helmet's should be lightweight, well ventilated and the correct fit for your head size. It is important to buy a helmet that is a snug fit, as the last thing that you want is for your helmet to move around when you’re flying down a steep descent. You can determine your size by measuring the circumference of your head approximately 3 cm above your eyebrows.

All-Mountain Bike Helmets

All-mountain bike helmets are otherwise known as open face enduro mountain bike helmets are the most commonly used helmets of all mountain bike helmets. All-mountain helmets often feature a front sun visor to reduce glare on the rider's eyes and have extra inbuilt protection around the top of the neck for added safety on torturous terrains. Ideal for riders' looking more protection and a slightly heavier mountain bike helmet.

XC Mountain Bike Helmets

XC mountain bike helmets commonly referred to as half-shell or trail mountain bike helmets look extremely similar to road bike helmets. These helmets offer a rougher and flatter design usually due to added protection to the back of the helmets in case of a backward fall. Many cross country and trail riders' prefer XC mountain helmets as they are typically a lighter-weight helmet compared to other mountain bike helmets.

Full Face Mountain Bike Helmets

Full face mountain bike helmets or downhill mountain bike helmets offer added protection to the front of the face while improving overall coverage of riders' heads. Making these helmets great for downhill mountain biking amongst unforgiving obstacles.

Convertible Mountain Bike Helmets

Convertible mountain bike helmets are as the name suggest helmets that convert from half face helmets to full face helmets. MTB convertible helmets feature a removable chin bar, meaning they ideal for mountain bike riders' looking for both comfort and protection when out on the trail.

The Best Mountain Bike Helmets At Australia's Best Prices

Shop a wide range of quality mountain bike helmets in various styles to suit your riding. With the best brands like Giro, Bell, Fox, POC, Met, 661, Lazer, and many more all at great prices, you'll be sure to find an MTB helmet that fits both your budget and needs. Shop online and in store at your local 99 Bikes in Adelaide, Brisbane, Melbourne, Perth, Canberra, Sydney, Gold Coast, and the Sunshine Coast.

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