Your Helmet Is Your Most Important Piece of Kit
You can ride a budget bike on premium trails and have a fantastic time. But cutting corners on your helmet is never worth it. A properly fitted, appropriate helmet is the single most important piece of protection you own. The good news: the market is full of excellent options at every price point — you just need to know what to look for.
The Two Main Types of MTB Helmet
Half-Shell (Open-Face) Helmets
Half-shell helmets protect the top and sides of your head while leaving your face exposed. They're lighter, better ventilated, and more comfortable for long climbs and cross-country riding. Most trail and enduro riders use a half-shell for everyday riding.
Best for: Cross-country, trail riding, enduro (uphill stages), general riding
Full-Face Helmets
Full-face helmets add a chin bar that protects your jaw and face from impacts. They're heavier and warmer, but essential for high-speed or technical riding where a face-first crash is a real possibility.
Best for: Downhill, bike parks, enduro (technical descents), jumps and drops
Convertible Helmets
Some helmets offer a removable chin bar, giving you the option to ride full-face on descents and half-shell on climbs. A good compromise for enduro racers or riders who want versatility without owning two helmets.
Key Features to Evaluate
| Feature | What to Look For |
|---|---|
| Safety Standard | Look for CPSC, CE EN1078, or ASTM F1952 (DH) certification |
| MIPS Technology | Reduces rotational forces in angled impacts — worth considering |
| Fit System | Dial-adjust retention systems provide a more precise, secure fit |
| Ventilation | More vents = cooler but less structural foam — balance for your climate |
| Visor | Adjustable visors block sun and deflect branches |
| Weight | Lighter helmets reduce neck fatigue on long rides |
Understanding MIPS
MIPS (Multi-directional Impact Protection System) is a low-friction layer inside the helmet that allows the shell to rotate slightly on impact. This is designed to reduce the rotational forces transmitted to the brain during an angled crash — the most common type of cycling accident.
Many riders and safety researchers consider MIPS (or equivalent systems from other brands) a worthwhile upgrade. It typically adds a small amount to the cost but is increasingly standard across mid-range and premium helmets.
Getting the Right Fit
A helmet that doesn't fit correctly offers reduced protection regardless of its quality rating. Follow these steps:
- Measure your head circumference with a flexible tape measure, about 2cm above your eyebrows.
- Check the manufacturer's sizing chart and select accordingly.
- Put the helmet on and use the dial retention system to snug it down — it should feel firm but not painful.
- The helmet should sit level, about two finger-widths above your eyebrows.
- Check for side-to-side and front-to-back movement — there should be minimal wobble.
- Buckle the chin strap. You should be able to fit two fingers between strap and chin.
When to Replace Your Helmet
Replace your helmet immediately after any significant impact — even if there's no visible damage. The foam liner compresses on impact and won't protect you as well in a second crash. Also replace any helmet that's more than 5 years old, as foam and plastics degrade over time even without crashes.
Budget Considerations
You don't need to spend a fortune to get a well-protected helmet. Many mid-range options ($80–$150) offer solid safety certifications, MIPS, and decent ventilation. Premium helmets ($200+) typically offer better aerodynamics, lighter weight, and premium materials — useful but not essential for most riders. Prioritise fit and certification over brand name.