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Adults Bicycle Helmets

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Lazer Strada KinetiCore Helmet Black

Lazer

Lazer Strada KinetiCore Helmet Black

Regular price $182.00 Full price
Sale price $182.00
Club price
Regular price $189.99 Full price
Size
Translation missing: en.products.product.variant_options
Giro Agilis MIPS Helmet Matte Black Fade
25% Off Full Price MIPS

Giro

Giro Agilis MIPS Helmet Matte Black Fade

Regular price $149.00 Full price
Sale price $149.00
Club price
Regular price $199.99 Full price
Size
Translation missing: en.products.product.variant_options
Lazer Coyote KinetiCore MTB Helmet Matte White
20% Off Full Price

Lazer

Lazer Coyote KinetiCore MTB Helmet Matte White

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
Lazer Coyote KinetiCore MTB Helmet Matte Black UNI 52-56cm
20% Off Full Price

Lazer

Lazer Coyote KinetiCore MTB Helmet Matte Black UNI 52-56cm

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

Raven

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

Regular price $79.00 Full price
Sale price $79.00
Club price
Regular price $89.99 Full price
Bern Helmet Macon 2.0 MIPS Matte Black
MIPS

Bern

Bern Helmet Macon 2.0 MIPS Matte Black

Regular price $151.00 Full price
Sale price $151.00
Club price
Regular price $159.99 Full price
Size
Translation missing: en.products.product.variant_options
Bern Helmet Macon 2.0 MIPS Matte Navy
MIPS

Bern

Bern Helmet Macon 2.0 MIPS Matte Navy

Regular price $151.00 Full price
Sale price $151.00
Club price
Regular price $159.99 Full price
Size
Translation missing: en.products.product.variant_options
Lazer Maze Kineticore Helmet Blue

Lazer

Lazer Maze Kineticore Helmet Blue

Regular price $75.00 Full price
Sale price $75.00
Club price
Regular price $79.99 Full price
Lazer Maze Kineticore BMX Helmet Green UNI

Lazer

Lazer Maze Kineticore BMX Helmet Green UNI

Regular price $75.00 Full price
Sale price $75.00
Club price
Regular price $79.99 Full price
Lazer Maze Jr Kineticore BMX Helmet Lime UNI

Lazer

Lazer Maze Jr Kineticore BMX Helmet Lime UNI

Regular price $75.00 Full price
Sale price $75.00
Club price
Regular price $79.99 Full price
Met Terranova MIPS Trail/E-Bike Helmet Black
47% Off Full Price Clearance

Met

Met Terranova MIPS Trail/E-Bike Helmet Black

Regular price $120.00 Full price
Sale price $120.00
Club price
Regular price $229.95 Full price
Size
Translation missing: en.products.product.variant_options
Lazer Compact Helmet Yellow

Lazer

Lazer Compact Helmet Yellow

Regular price $69.00 Full price
Sale price $69.00
Club price
Regular price $74.99 Full price
Bern Helmet Watts 2.0 Matte Black

Bern

Bern Helmet Watts 2.0 Matte Black

Regular price $137.00 Full price
Sale price $137.00
Club price
Regular price $144.99 Full price
Size
Translation missing: en.products.product.variant_options
Lazer Maze Jr Kineticore Kids Helmet 50-56cm Gofluo Green Reflective

Lazer

Lazer Maze Jr Kineticore Kids Helmet 50-56cm Gofluo Green Reflective

Regular price $75.00 Full price
Sale price $75.00
Club price
Regular price $79.99 Full price
Giro Isode II MIPS Road Helmet Matte White UNI 54-61cm

Giro

Giro Isode II MIPS Road Helmet Matte White UNI 54-61cm

Regular price $125.00 Full price
Sale price $125.00
Club price
Regular price $139.00 Full price
Giro Isode MIPS II Helmet Matte Black/Charcoal 54-61cm

Giro

Giro Isode MIPS II Helmet Matte Black/Charcoal 54-61cm

Regular price $134.00 Full price
Sale price $134.00
Club price
Regular price $149.00 Full price
Met Echo Mips MTB Helmet Titanium Metallic
2% Off Full Price MIPS

Met

Met Echo Mips MTB Helmet Titanium Metallic

Regular price $125.00 Full price
Sale price $125.00
Club price
Regular price $169.99 Full price
Size
Translation missing: en.products.product.variant_options
Lazer Lupo Kineticore MTB Helmet Matte Black
21% Off Full Price

Lazer

Lazer Lupo Kineticore MTB Helmet Matte Black

Regular price $118.00 Full price
Sale price $118.00
Club price
Regular price $149.99 Full price
Lazer Lupo Kineticore MTB Helmet Matte Mint UNI
21% Off Full Price

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
Bell Helmet Local Matt Black

Bell

Bell Helmet Local Matt Black

Regular price $132.00 Full price
Sale price $132.00
Club price
Regular price $139.99 Full price
Size
Translation missing: en.products.product.variant_options
Bell Helmet Local Gloss White

Bell

Bell Helmet Local Gloss White

Regular price $132.00 Full price
Sale price $132.00
Club price
Regular price $139.99 Full price
Size
Translation missing: en.products.product.variant_options
Giro Aerohead MIPS II Road Aero Helmet Matte Black

Giro

Giro Aerohead MIPS II Road Aero Helmet Matte Black

Regular price $921.00 Full price
Sale price $921.00
Club price
Regular price $949.00 Full price
Size
Translation missing: en.products.product.variant_options
Giro Hoxton MIPS BMX Helmet Matte Black

Giro

Giro Hoxton MIPS BMX Helmet Matte Black

Regular price $193.00 Full price
Sale price $193.00
Club price
Regular price $198.99 Full price
Size
Translation missing: en.products.product.variant_options
Bern Helmet Hudson MIPS Satin White
MIPS

Bern

Bern Helmet Hudson MIPS Satin White

Regular price $237.00 Full price
Sale price $237.00
Club price
Regular price $249.99 Full price
Size
Translation missing: en.products.product.variant_options
Bell Spark 2 MIPS Helmet Matte White

Bell

Bell Spark 2 MIPS Helmet Matte White

Regular price $205.00 Full price
Sale price $205.00
Club price
Regular price $215.99 Full price
Size
Translation missing: en.products.product.variant_options
Bell Spark 2 MIPS Helmet Matte Black

Bell

Bell Spark 2 MIPS Helmet Matte Black

Regular price $205.00 Full price
Sale price $205.00
Club price
Regular price $215.99 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.

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Find Your Size

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Shop 99 Bikes Extensive Range of Adults Bicycle Helmets for top-quality protection for every type of riding. Featuring a wide range of options, from Casual Sport and Leisure Helmets for everyday comfort to Road Helmets crafted for speed and aerodynamics. For trail enthusiasts, our MTB Helmets and Full Face Helmets offer extra coverage and durability, while Commuter Helmets prioritize visibility and style on urban streets. BMX riders can find high-performance BMX Helmets designed for tricks and stunts. With options to suit every riding style, 99 Bikes has the perfect helmet to keep you safe on all your adventures. Shop in-store and online now with 99 Bikes.