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Finding an MTB helmet for a large head can be difficult because head shape matters as much as circumference. A helmet may list an XL size but still feel tight around the temples or forehead. Measuring your head and checking the manufacturer’s exact size chart can help you find a better fit.
Larger MTB helmets can offer more room, adjustable retention systems, and better comfort for riders with wider or longer heads. Models with MIPS or another rotational-impact system can provide additional protection, while good ventilation helps reduce heat during long rides. Current MTB helmet testing also places strong emphasis on fit, ventilation, coverage, and impact protection.
This guide covers five of the best MTB helmets for big heads. We focus on size range, head shape, fit adjustment, ventilation, protection, comfort, coverage, durability, and overall value. These factors can help you find a helmet that feels secure without creating uncomfortable pressure points.
5 Best Mtb Helmets For Big Heads
| Image | Title | Best For | Link |
|---|---|---|---|
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ILM Adult Mountain Bike Helmet | Lightweight comfort and adjustable fit for everyday trail riding. | View on Amazon |
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ILM HT58 Full Face Helmet | Maximum safety coverage for aggressive MTB and BMX riding. | View on Amazon |
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ILM HT58 Full Face Helmet | High-value full-face protection for budget-conscious riders. | View on Amazon |
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Giro Fixture MIPS II Helmet | Top-tier brain protection technology for all-day adventures. | View on Amazon |
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Exclusky Adult MTB Helmet | Great ventilation and ease of use for casual mountain biking. | View on Amazon |
Our Top 5 Best Mtb Helmets For Big Heads Reviews – Expert Tested & Recommended
1. ILM Adult Mountain Bike Helmet
If you need a lightweight lid that doesn’t feel heavy after an hour on the trail, this ILM model is a fantastic pick. It provides a comfortable, pressure-free fit that is perfect for those who struggle with standard sizing.
Key Features That Stand Out
- ✓ Meets stringent U.S. CPSC safety standards.
- ✓ Weighs only 330g for extended ride comfort.
- ✓ Includes 17 optimized vents for cooling.
- ✓ Detachable sun visor blocks glare.
Why We Recommend It
We love this helmet because it balances safety with a truly lightweight feel. The adjustable dial makes it easy to get a snug, secure fit for larger head shapes without feeling bulky.
Best For
Daily trail riders who prioritize weight reduction and cooling airflow.
Pros and Cons at a Glance
2. ILM HT58 Full Face Helmet
For aggressive riders, the ILM HT58 provides the full-face protection you need. It includes an extended chin bar and goggles, making it a great all-in-one safety solution.
Key Features That Stand Out
- ✓ Extended chin bar for increased facial protection.
- ✓ Includes dedicated MTB goggles.
- ✓ Safety tested to ASTM F1447 and CPSC standards.
- ✓ EPP-reinforced chin bar durability.
Why We Recommend It
This full-face helmet is surprisingly accommodating for larger heads. The adjustable buckle system ensures the fit remains stable even on rough, technical terrain.
Best For
Gravity-focused riders who want extra peace of mind and full facial protection.
Pros and Cons at a Glance
3. ILM HT58 Full Face Helmet (Variant)
If you love the features of the HT58 but want the best possible value for money, this option delivers exactly that. It’s a reliable choice for riders on a budget who refuse to compromise on core safety features.
Key Features That Stand Out
- ✓ Excellent price-to-performance ratio.
- ✓ Complete full-face coverage design.
- ✓ Adjustable visor for changing light conditions.
- ✓ Durable EPS shell construction.
Why We Recommend It
It’s rare to find a full-face helmet that is both budget-friendly and capable of fitting larger head sizes comfortably. This model ticks both boxes, making it an accessible entry into extreme MTB sports.
Best For
Budget-conscious riders needing full-face coverage for BMX or aggressive trail use.
Pros and Cons at a Glance
4. Giro Fixture MIPS II Helmet
The Giro Fixture MIPS II is a benchmark in the industry. It integrates high-end safety features with a design that fits a wide range of head shapes exceptionally well.
Key Features That Stand Out
- ✓ Integrated MIPS Brain Protection System.
- ✓ Roc Loc Sport 7cm adjustment range.
- ✓ Fused outer shell for impact absorption.
- ✓ Advanced airflow management system.
Why We Recommend It
Giro knows how to design for different head shapes. This model offers one of the best fit systems on the market, which is crucial for those of us who usually find off-the-shelf helmets too restrictive.
Best For
Riders looking for reliable, proven safety technology and a comfortable, adjustable fit.
Pros and Cons at a Glance
5. Exclusky Adult MTB Helmet
The Exclusky MTB helmet is designed with comfort in mind, specifically utilizing breathable materials for the inner pads to keep you cool and comfortable all day long.
Key Features That Stand Out
- ✓ Breathable, sweat-wicking inner padding.
- ✓ Impact-resistant PVC and PC outer shell.
- ✓ Simple single-hand dial retention system.
- ✓ Reinforced visor for sun and debris protection.
Why We Recommend It
We found this to be one of the most accessible helmets for beginners or casual trail riders. The ease of adjustment makes it very simple to achieve a secure fit without any complicated mechanics.
Best For
Casual trail cyclists who need a reliable, comfortable helmet for weekend rides.
Pros and Cons at a Glance
Complete Buying Guide for Best Mtb Helmets For Big Heads
Essential Factors We Consider
When selecting a helmet for a larger head, focus on the adjustment range of the retention system. A proper fit is not just about size; it’s about the shape of the helmet shell relative to your head. Look for models that offer deep coverage, as these are often more comfortable for larger head shapes than shallow designs.
Budget Planning
You can find safe, high-quality helmets at various price points. While premium models like those featuring MIPS technology come at a higher cost, they offer advanced rotational impact protection. If you are on a tight budget, ensure your choice at least meets CPSC or equivalent safety standards to keep your head protected on the trail.
Final Thoughts
Finding a helmet that fits well is the best way to ensure you actually wear it every time you ride. Don’t settle for discomfort—take the time to measure your head and use the adjustment systems provided by these top-tier manufacturers to get that perfect, custom feel.
Frequently Asked Questions
Q: How do I measure my head for a bike helmet?
A: Use a soft measuring tape to measure the circumference of your head about one inch above your eyebrows. Compare this measurement to the manufacturer’s sizing chart for the best fit.
Q: Do full-face helmets fit the same as open-face helmets?
A: No, full-face helmets often feel tighter because they provide more coverage. If you are between sizes, we generally recommend sizing up for a more comfortable, long-term fit in a full-face style.
Q: Why is MIPS important for mountain biking?
A: MIPS (Multi-directional Impact Protection System) is designed to help reduce rotational forces on the brain during an angled impact, which is a common scenario in mountain biking accidents.
Olivia
Writer at Helmet Today, covering helmet reviews, fit and riding safety.
