Your Ultimate Guide to Bike Helmets in New Zealand

Looking for the best bike helmet in New Zealand? Whether you’re charging down a mountain trail, cruising the cycleways, or teaching your kids to ride, the right helmet will keep your head safe and comfortable. 

Why a bike helmet matters

Bicycle helmets aren’t just accessories – they’re lifesavers. In NZ, wearing a helmet on your bike is mandatory for riders of all ages, and studies show that a properly fitted helmet can reduce head injuries by up to 70 %. Modern helmets use a hard polycarbonate shell bonded to EPS foam to absorb impact energy. Many models also feature MIPS or similar rotational‑impact technology to minimise brain injuries. Always check for an AS/NZS 2063 compliance sticker so you know your helmet meets the Australian/New Zealand safety standard.

Types of bike helmets

Trail / open‑face helmets (mountain & urban)

If you’re into trail riding or mountain biking, an open‑face helmet (also called a half‑shell or trail helmet) is your go‑to. These helmets cover more of the back and sides of your head than a road lid and include a visor to protect your eyes from sun, rain and low‑hanging branches. Look for models with plenty of vents, adjustable fit systems and features like MIPS for peace of mind.

Open‑face helmets are also popular for commuters and e‑bike riders because they strike a nice balance between protection and ventilation. Pair one with a set of sunglasses or goggles, and you’re ready for anything.

Full‑face helmets (downhill & enduro)

When the terrain gets gnarly or you’re racing downhill, a full‑face helmet is essential. These helmets wrap around your head and jaw to protect your face from rocks, trees and big crashes. They’re heavier than trail helmets but incorporate large vents and lightweight materials to help you stay cool. Some models have removable chin bars so you can climb in open‑face mode and then attach the bar for the descent.

Choose a full‑face MTB helmet for gravity riding, bike park days and enduro racing. If you’re just getting started with downhill riding, come into our Papamoa store and we’ll help you pick the right size and model.

Road & commuter helmets (aerodynamic & lightweight)

Road cycling helmets are designed for speed, efficiency and ventilation. They’re sleek, sit higher on your head and have plenty of large vents to keep you cool during long climbs and races. Urban commuters love these helmets because they’re lightweight and often include features like integrated lights, reflective elements and visors that can be swapped or removed.

When shopping for a road or commuter helmet, consider how many vents you need, whether you want an aero‑optimised design and if integrated safety features like MIPS or WaveCel are important to you. 

Kids’ bike helmets (fun & safe)

Little riders deserve serious protection too. Children’s bike helmets come in bright colours and fun designs to make wearing them more appealing. Kids’ helmets use the same impact‑absorbing technology as adult models but often feature extra padding and a simple retention system to accommodate growing heads.

Let your child pick a design they love – they’re more likely to wear it. Then make sure it sits level on their head, covering the forehead. Adjust the straps so they form a “V” under their ears and buckle snugly. Check the fit every few months as kids grow quickly.

 

How to fit a helmet properly

Even the best bike helmet won’t protect you if it doesn’t fit. Follow these steps to get a perfect fit:

1. Measure your head circumference: Use a flexible tape measure around your forehead about 2 cm above your eyebrows. Helmets are sized in centimetres – choose the size that matches your measurement.
   
   General size chart (but always double check)
   

   • Small (S): 51–55 cm

   • Medium (M): 55–59 cm

   • Large (L): 59–63 cm

   • Extra‑Large (XL): 61–65 cm

2. Adjust the retention system: Most helmets have a dial or cage that tightens around your head. Dial it until the helmet feels snug but not uncomfortable.

3. Set the side straps: The side straps should form a “V” just under each ear. Slide the adjusters until they sit in the correct position.

4. Tighten the chin strap: The buckle should sit under your chin with room for one or two fingers. When you open your mouth widely, you should feel the helmet hug your head.

5. Check the position: The helmet should sit level, covering your forehead and not tilting back. Shake your head gently – if the helmet moves, tighten the straps or retention system.

Helmet care & replacement

Helmets don’t last forever. Replace your bike helmet:

• After any crash: Helmets are designed for a single major impact. Even if it looks fine, the foam can be compromised.

• Every 3–5 years: Materials degrade over time from sweat, UV exposure and general wear.

• If it doesn’t fit: Heads (and hairstyles) change. A loose helmet won’t protect you properly.

Keep your helmet clean by washing the removable pads and straps in mild soap and water, but always double-check with the manufacturer on best cleaning practices. Let them air dry completely before reinstalling. Store your helmet in a cool, dry place out of direct sunlight.

Shop helmets at CycleWorx

At CycleWorx, we stock a wide range of mountain bike helmets, road cycling helmets and kids’ bike helmets from trusted brands. Our friendly team rides all kinds of bikes – from gravel grinders to e‑bikes – and we’re happy to share advice to help you find the best helmet for your adventures. Drop by our Papamoa store or browse our online shop at cycleworx.co.nz.

Ride safe and we’ll see you out there!