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100% 8
Bell 64
Bern 15
Bluegrass 3
C-Preme 35
Cinettica 6
Endura 2
FOX 34
Giro 119
Hornit 10
Jetblack 4
Lazer 69
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Size

Youth 1
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XS 22
S 1
SM 175
M 5
MD 173
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LG 151
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SM/MD 16
UC 3
UNI 2
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Answer a few short questions and we'll make a recommendation on which size is best for you.

FOX Crossframe Pro MIPS MTB Helmet Matte Black

35% Off Full Price Pre-Order

FOX

FOX Crossframe Pro MIPS MTB Helmet Matte Black

Regular price $285.00 Full price

Sale price $285.00

Club price

Regular price $439.95 Full price

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FOX Dropframe Pro MIPS MTB Helmet Matte Black

35% Off Full Price Pre-Order

FOX

FOX Dropframe Pro MIPS MTB Helmet Matte Black

Regular price $356.00 Full price

Sale price $356.00

Club price

Regular price $549.95 Full price

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Giro Fixture MIPS II MTB Helmet Matte Black/Grey UNI 54-61cm

21% Off Full Price Pre-Order

Giro

Giro Fixture MIPS II MTB Helmet Matte Black/Grey UNI 54-61cm

Regular price $118.00 Full price

Sale price $118.00

Club price

Regular price $149.99 Full price

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Giro Fixture MIPS II MTB Helmet Matte White/Grey UNI 54-61cm

21% Off Full Price Pre-Order

Giro

Giro Fixture MIPS II MTB Helmet Matte White/Grey UNI 54-61cm

Regular price $118.00 Full price

Sale price $118.00

Club price

Regular price $149.99 Full price

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/per

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Giro Fixture MIPS II MTB Helmet UNI Dark Sage

21% Off Full Price Pre-Order

Giro

Giro Fixture MIPS II MTB Helmet UNI Dark Sage

Regular price $118.00 Full price

Sale price $118.00

Club price

Regular price $149.99 Full price

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Bell Crest JR Universal Youth Helmet Matt Crimson

17% Off Full Price Pre-Order

Bell

Bell Crest JR Universal Youth Helmet Matt Crimson

Regular price $63.00 Full price

Sale price $63.00

Club price

Regular price $75.99 Full price

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Giro Fixture Youth MIPS II MTB Helmet Matte Black/Vivid Green UNI Youth 50-57cm

21% Off Full Price Pre-Order

Giro

Giro Fixture Youth MIPS II MTB Helmet Matte Black/Vivid Green UNI Youth 50-57cm

Regular price $118.00 Full price

Sale price $118.00

Club price

Regular price $149.99 Full price

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Giro Fixture MIPS II Womens MTB Helmet Matte Black/Stone UNI 50-57cm

21% Off Full Price Pre-Order

Giro

Giro Fixture MIPS II Womens MTB Helmet Matte Black/Stone UNI 50-57cm

Regular price $118.00 Full price

Sale price $118.00

Club price

Regular price $149.99 Full price

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Giro Fixture MIPS II MTB Helmet Matte Titanium UNI 54-61cm

21% Off Full Price Pre-Order

Giro

Giro Fixture MIPS II MTB Helmet Matte Titanium UNI 54-61cm

Regular price $118.00 Full price

Sale price $118.00

Club price

Regular price $149.99 Full price

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5% Off Full Price MIPS Pre-Order

Giro

Giro Agilis MIPS Helmet Matte White

Regular price $165.00 Full price

Sale price $165.00

Club price

Regular price $199.99 Full price

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Giro Fixture MIPS II Womens MTB Helmet Matte Dark Maroon UNI 50-57cm

21% Off Full Price Pre-Order

Giro

Giro Fixture MIPS II Womens MTB Helmet Matte Dark Maroon UNI 50-57cm

Regular price $118.00 Full price

Sale price $118.00

Club price

Regular price $149.99 Full price

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Lazer Finch Kineticore Youth/Adult XS MTB Helmet Matte Purple

Pre-Order

Lazer

Lazer Finch Kineticore Youth/Adult XS MTB Helmet Matte Purple

Regular price $116.00 Full price

Sale price $116.00

Club price

Regular price $129.99 Full price

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Raven Corvus MTB Helmet with Magnetic Clip Satin Black MD/LG

Pre-Order

Raven

Raven Corvus MTB Helmet with Magnetic Clip Satin Black MD/LG

Regular price $79.00 Full price

Sale price $79.00

Club price

Regular price $89.99 Full price

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Pre-Order

Lazer

Lazer Compact Helmet Black UNI 54-61cm

Regular price $69.00 Full price

Sale price $69.00

Club price

Regular price $74.99 Full price

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Giro Fixture II Womens MIPS MTB Helmet Matte White UNI 50-57cm

21% Off Full Price Pre-Order

Giro

Giro Fixture II Womens MIPS MTB Helmet Matte White UNI 50-57cm

Regular price $118.00 Full price

Sale price $118.00

Club price

Regular price $149.99 Full price

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/per

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6% Off Full Price Pre-Order

Cinettica

Cinettica VELOCITA Helmet Matt Black

Regular price $65.00 Full price

Sale price $65.00

Club price

Regular price $79.99 Full price

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/per

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Translation missing: en.products.product.variant_options

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6% Off Full Price Pre-Order

Cinettica

Cinettica VELOCITA Helmet Matt Titanium

Regular price $65.00 Full price

Sale price $65.00

Club price

Regular price $79.99 Full price

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Pre-Order

Lazer

Lazer Compact Helmet Blue UNI 2026

Regular price $69.00 Full price

Sale price $69.00

Club price

Regular price $74.99 Full price

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17% Off Full Price Pre-Order

Bell

Bell Crest Jr Youth Helmet Matte Blue Uni (50-57 cm)

Regular price $63.00 Full price

Sale price $63.00

Club price

Regular price $75.99 Full price

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Jetblack Comp 2.0 Fullface Helmet Black Medium

Pre-Order

Jetblack

Jetblack Comp 2.0 Fullface Helmet Black Medium

Regular price $239.00 Full price

Sale price $239.00

Club price

Regular price $249.99 Full price

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Lazer Lupo Kineticore MTB Helmet Matte Black UNI 55-61cm

21% Off Full Price Pre-Order

Lazer

Lazer Lupo Kineticore MTB Helmet Matte Black UNI 55-61cm

Regular price $118.00 Full price

Sale price $118.00

Club price

Regular price $149.99 Full price

Unit price

/per

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Jetblack Comp 2.0 Fullface Helmet Black Small

Pre-Order

Jetblack

Jetblack Comp 2.0 Fullface Helmet Black Small

Regular price $239.00 Full price

Sale price $239.00

Club price

Regular price $249.99 Full price

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Pre-Order

Lazer

Lazer Nutz 2.0 Kineticore Kids Helmet Sparkle/Unicorns 50-56cm

Regular price $75.00 Full price

Sale price $75.00

Club price

Regular price $79.99 Full price

Unit price

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Pre-Order

Lazer

Lazer Compact Helmet White

Regular price $69.00 Full price

Sale price $69.00

Club price

Regular price $74.99 Full price

Unit price

/per

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Lazer Lupo Kineticore MTB Helmet Matte White/Stone

21% Off Full Price Pre-Order

Lazer

Lazer Lupo Kineticore MTB Helmet Matte White/Stone

Regular price $118.00 Full price

Sale price $118.00

Club price

Regular price $149.99 Full price

Unit price

/per

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Pre-Order

Raven

Raven BMX Helmet Satin Black

Regular price $64.99 Full price

Sale price $64.99

Club price

Regular price $69.98 Full price

Unit price

/per

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Translation missing: en.products.product.variant_options

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Lazer Maze Kineticore BMX Helmet Galaxy 50-56cm

Pre-Order

Lazer

Lazer Maze Kineticore BMX Helmet Galaxy 50-56cm

Regular price $75.00 Full price

Sale price $75.00

Club price

Regular price $79.99 Full price

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/per

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Lazer Finch Kineticore Youth/Adult XS MTB Helmet Matte Teal

Pre-Order

Lazer

Lazer Finch Kineticore Youth/Adult XS MTB Helmet Matte Teal

Regular price $116.00 Full price

Sale price $116.00

Club price

Regular price $129.99 Full price

Unit price

/per

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Pre-Order

Giro

Giro Agilis MIPS Road Helmet Matt Black

Regular price $195.00 Full price

Sale price $195.00

Club price

Regular price $199.00 Full price

Unit price

/per

Size

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Giro Scamp II Kids Helmet Matte Blue Jewel

Pre-Order

Giro

Giro Scamp II Kids Helmet Matte Blue Jewel

Regular price $95.00 Full price

Sale price $95.00

Club price

Regular price $99.00 Full price

Unit price

/per

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Lazer Lupo Kineticore MTB Helmet Matte Mint UNI

21% Off Full Price Pre-Order

Lazer

Lazer Lupo Kineticore MTB Helmet Matte Mint UNI

Regular price $118.00 Full price

Sale price $118.00

Club price

Regular price $149.99 Full price

Unit price

/per

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Lazer Maze Kineticore BMX Helmet UNI 55-61cm Black

Pre-Order

Lazer

Lazer Maze Kineticore BMX Helmet UNI 55-61cm Black

Regular price $75.00 Full price

Sale price $75.00

Club price

Regular price $79.99 Full price

Unit price

/per

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Lazer Finch Kineticore Youth/Adult XS MTB Helmet Matte Black

Pre-Order

Lazer

Lazer Finch Kineticore Youth/Adult XS MTB Helmet Matte Black

Regular price $116.00 Full price

Sale price $116.00

Club price

Regular price $129.99 Full price

Unit price

/per

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Giro Coalition Spherical Full Face Helmet Matte Black

21% Off Full Price Pre-Order

Giro

Giro Coalition Spherical Full Face Helmet Matte Black

Regular price $449.00 Full price

Sale price $449.00

Club price

Regular price $569.00 Full price

Unit price

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Giro Scamp II Kids Helmet Matte Pink/Green Fade XS 45-49cm

Pre-Order

Giro

Giro Scamp II Kids Helmet Matte Pink/Green Fade XS 45-49cm

Regular price $95.00 Full price

Sale price $95.00

Club price

Regular price $99.00 Full price

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Lazer Maze JR Kineticore Kids BMX Helmet UNI 50-66cm Black

Pre-Order

Lazer

Lazer Maze JR Kineticore Kids BMX Helmet UNI 50-66cm Black

Regular price $75.00 Full price

Sale price $75.00

Club price

Regular price $79.99 Full price

Unit price

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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

Your height:

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.

Your inseam:

Find Your Size

Your results

For the we suggest the following size.

More comfort More speed

Height: --

Inseam: --

Adjusted Height: --

We can't make a recommendation on size for the based on your details.

Finding the right sized bike for you is important to get the most enjoyment out of your new bike. Either the size for you isn't available at your store, we don’t have the required data or your height is outside the range of this bike.

If you head instore our team will provide a free professional measure up and recommend the best bikes to suit your needs or you can reach out to our customer service team who can provide you with more guidance over the phone.

Call 0800 000 283 for Customer Service

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Recommended sizes will now be highlighted on the page.

99 Bikes have a massive range of quality bike helmets for all ages, including men’s, women’s, kids bike helmets available in store and online! In New Zealand every cyclist is required to wear bike helmets by law. Beyond providing safety, your helmet should also be comfortable and suitable for the style of riding you’ll be doing. Shop the best range of road helmets, mountain bike helmets, full face helmets, BMX helmets, kids helmets, and more. You can be sure you're buying the best helmet at the best price with our Best Price Guarantee. Shop online with click & collect and delivery, and in store at your local 99 Bikes in Auckland, Christchurch & Wellington.

Helmets

Mountain Bike Helmets

Road Bike Helmets

Kids Helmets

BMX & Skate Helmets

Full Face Helmets

Recreational Helmets

Find Your Size

Step 1: Measure your height

Find Your Size

Step 2: Adjust your inseam

Find Your Size

Your results

Find Your Size

We have saved your measurements.

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