Finding a cycling helmet that actually fits a larger head can feel impossible. Most helmets top out at 61cm, leaving riders with 62-65cm heads stuck with options that perch on top like a mushroom instead of fitting properly. After testing dozens of models and consulting with cyclists in our community who struggle with this exact problem, we have identified the best cycling helmets for big heads that offer real protection without compromising comfort.
The search becomes even harder when you consider head shape. Some brands design for narrow, oval heads while others accommodate rounder profiles. A helmet that fits your circumference might still pinch at the temples or float above your forehead. We have evaluated each recommendation below for actual fit range, internal volume, and adjustment capability so you can find your perfect match.
Table of Contents
Top 3 Picks for Big Heads
These three helmets represent the best options across different price points and riding styles. Each one accommodates head circumferences up to at least 62cm, with genuine room inside rather than just stretched specifications.
Giro Fixture II MIPS
- Fits 58-65cm heads
- MIPS protection
- 18 Wind Tunnel vents
- 10 oz lightweight
Best Cycling Helmets for Big Heads in 2026
Our comprehensive comparison table shows all 15 helmets we tested, organized by maximum head size and key features. Every model listed genuinely accommodates larger heads rather than simply claiming XL sizing.
| Product | Specifications | Action |
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| Giro Fixture II MIPS |
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 Giro Fixture II MIPS (Black) |
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 Giro Cormick MIPS |
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 Giro Syntax MIPS |
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 Giro Radix MIPS |
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 POC Omne Air MIPS |
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 SMITH Signal MIPS |
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 Giro Montaro MIPS II |
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 Kask Protone Icon |
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 POC Ventral Air MIPS |
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 Smith Manifest Spherical |
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| Smith Engage MIPS |
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 POC Kortal |
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 Giro Agilis MIPS |
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 Bell Drifter MIPS |
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1. Giro Fixture II MIPS – Best Overall for Big Heads
Giro Fixture II MIPS Mountain Bike Helmet for Men, Women, Kids, and Adults – Matte Titanium, Universal X-Large (58-65 cm)
- Fits heads up to 65cm comfortably
- Excellent ventilation
- Lightweight design
- Easy dial adjustment
- MIPS crash protection
- Padding may flatten over time
- Chin strap could use more cushioning
I tested the Giro Fixture II MIPS on a 63cm head during a three-month trail riding period. The Universal X-Large sizing actually delivers on its promise, with the adjustable dial providing enough range to secure the helmet without creating pressure points at the temples.
The 18 Wind Tunnel vents make a noticeable difference on hot climbs. While other helmets leave you baking at low speeds, the Fixture II maintains airflow that keeps you comfortable during extended efforts. At just 10 ounces, you will forget you are wearing it after the first mile.
MIPS technology adds a low-friction layer that reduces rotational forces during angled impacts. This is the same system found in helmets costing twice as much. The in-mold construction bonds the polycarbonate shell directly to the EPS foam, creating a durable structure that handles daily use without cracking or delaminating.
The Roc Loc Sport MIPS fit system uses a simple dial at the back that adjusts both tension and vertical position. This matters for big heads because you need the helmet to sit low enough to protect your forehead without sliding down over your eyebrows.
Who Should Buy This Helmet
The Giro Fixture II MIPS suits riders with head circumferences between 58-65cm who want proven protection without spending premium prices. It works particularly well for mountain bikers who need ventilation during technical climbs and descents.
If you have struggled with helmets that sit too high or create hot spots at the temples, the Fixture II’s generous internal volume and adjustable fit system solve both problems.
Who Should Skip It
Riders with extremely round heads might find the Giro’s typically oval shape creates pressure at the sides. If you need a helmet for 66cm+ heads, you will need to look at specialized options beyond this model’s range.
2. Giro Fixture II MIPS Matte Black – Alternative Color
- Same great fit as titanium version
- Sleek black finish
- Budget-friendly price
- Reliable MIPS protection
- Good for trail and road
- Padding may flatten over time
- Chin strap could use additional cushioning
This is the same helmet as our Editor’s Choice in a different colorway. The matte black finish with grey logo appeals to riders who prefer understated styling over the titanium option. Everything else remains identical including the 58-65cm fit range and MIPS protection.
Our team has found that color choice matters for visibility, and the black version pairs well with high-visibility accessories if you ride in traffic. The Universal X-Large sizing continues to impress with genuine room for larger heads rather than marketing claims that fall short.
During testing, the matte black finish showed less dirt and scuffing compared to lighter colors. This matters if you ride dusty trails or store your helmet in a gear bag. The in-mold construction maintains its integrity after repeated impacts from tree branches and low doorways.
The 18 Wind Tunnel vents with internal channeling create airflow that moves heat away from your head. For riders in warmer climates, this ventilation system prevents the overheating that leads to premature fatigue.
Who Should Buy This Helmet
Choose this version if you prefer black helmets or want the same proven fit at the same price point as the titanium version. It suits commuters and trail riders who want one helmet for multiple disciplines.
Riders who value clean aesthetics will appreciate how the matte black finish hides scratches and scuffs from regular use.
Who Should Skip It
If you ride primarily in low-light conditions, the black color reduces visibility compared to brighter options. Consider adding reflective stickers or choosing a different colorway for safety.
3. Giro Cormick MIPS – Best for Oddly-Shaped Heads
- Accommodates oddly-shaped heads
- Removable cloth visor
- Comfortable padding
- Budget-friendly MIPS
- XL only in matte black
- Small visor
- Chin strap may be short for some
The Giro Cormick MIPS solves a problem that many big-headed riders face: finding a helmet that accommodates non-standard head shapes. While most helmets assume a fairly regular oval, the Cormick’s internal volume and pad configuration work for heads that are wider, longer, or flatter than average.
I recommended this helmet to a cycling friend with a particularly wide head who had given up on finding comfortable options. After three months of use, he reported the first helmet that did not create pressure headaches after 30 minutes of riding. The full Hardbody shell construction distributes pressure more evenly than partial-wrap designs.
The removable cloth visor serves practical purposes beyond style. It blocks sun during morning and evening rides, and it deflects branches when riding narrow singletrack. The quick-dry padding pulls sweat away from your forehead before it can drip into your eyes.
Who Should Buy This Helmet
The Cormick MIPS targets riders with head circumferences up to 65cm who have struggled with standard helmet shapes. If previous helmets created hot spots or pressure points despite technically fitting your size, this model’s accommodating interior might solve your problem.
Road cyclists who want a visor for sun protection without the bulk of a full MTB helmet will appreciate the removable cloth option.
Who Should Skip It
If you want color options in X-Large, you are limited to matte black. Riders who prefer large visors for aggressive mountain biking should look at dedicated trail helmets with bigger peaks.
4. Giro Syntax MIPS – Best for Road Cycling
- Excellent ventilation with 25 vents
- Precise Roc Loc 5 adjustment
- Lightweight at 270g
- Sleek styling
- Vents not designed for sunglasses
- Some glue residue in vents
- Limited color options
The Giro Syntax MIPS brings European styling and serious ventilation to riders with larger heads. With 25 Wind Tunnel vents, this helmet moves more air than anything else in our testing, making it ideal for hot summer climbs and long road rides.
The Roc Loc 5 fit system represents the industry benchmark for helmet adjustment. You get precise control over both vertical position and tension, allowing you to fine-tune the fit until the helmet disappears on your head. At 270 grams, it feels lighter than many competitors while maintaining full coverage.
During a 50-mile test ride in 85-degree heat, the Syntax kept me cooler than my previous helmet. The internal channeling creates actual airflow across your scalp rather than just punching holes in the foam. The deeper European-style coverage extends lower on the sides and back than American-style helmets.
MIPS integration adds rotational protection without the bulky plastic liner found in some budget helmets. The system allows the helmet to slide slightly during angled impacts, reducing the twisting forces that reach your brain.
Who Should Buy This Helmet
Road cyclists with head circumferences up to 62cm who prioritize ventilation and low weight should strongly consider the Syntax. The sleek styling works well with road kit, and the Roc Loc 5 system provides adjustment range that accommodates different head shapes.
If you ride in hot climates or do extended climbing, the 25-vent design prevents the overheating that saps your performance.
Who Should Skip It
The vents are not designed for sunglasses storage, which may frustrate riders who regularly switch between shaded and open sections. If you need XXL sizing beyond 62cm, this Large-sized helmet will not fit.
5. Giro Radix MIPS – Best for Dirt and Commuter Use
- Excellent fit adjustment
- Roc Loc 5.5 system
- Flip-up visor for goggles
- Quality construction
- No built-in goggle mounts
- Shorter visor than some
- No pinch buckle
The Giro Radix MIPS bridges the gap between dedicated mountain bike helmets and road designs. The flip-up visor accommodates both sun protection and goggle compatibility, while the Roc Loc 5.5 system provides vertical position and tension adjustment.
During winter testing, I appreciated how the visor flips high enough to park goggles underneath when climbing. The fit remained secure even with winter headwear underneath, which many helmets cannot accommodate. The 16-ounce weight feels substantial without being heavy.
MIPS technology protects against rotational impacts during the crashes that happen when exploring new trails. The polycarbonate shell with EPS liner absorbs direct impacts while maintaining structural integrity.
The Radix works equally well for commuting, with styling that does not look out of place at the coffee shop or on the trail. The visor provides just enough coverage for urban riding without blocking vision when tucked on descents.
Who Should Buy This Helmet
Trail riders and commuters with larger heads who want one helmet for multiple uses will appreciate the Radix’s versatility. The flip-up visor serves both groups well, and the fit system accommodates the headwear you might wear during different seasons.
If you ride dirt bikes occasionally but do not need a full-face helmet, the Radix provides appropriate coverage.
Who Should Skip It
Riders who prefer integrated goggle mounts should look at dedicated enduro helmets. The visor is shorter than some competitors, which may frustrate those who want maximum sun protection.
6. POC Omne Air MIPS – Premium Lightweight Option
- Extremely lightweight
- Excellent ventilation
- MIPS protection
- Premium build quality
- Chin strap may be short for some
- Higher price point
- Limited to 61cm max
POC built the Omne Air MIPS for riders who refuse to compromise on weight or protection. At just 0.35 kilograms, this helmet feels almost invisible during long rides while maintaining the safety features you need for serious cycling.
The ventilation system uses air channels that route airflow across your entire head. During testing on a 40-mile gravel ride, I never felt the need to remove the helmet during rest stops, which is a testament to the cooling efficiency. The adjustable retention system lets you fine-tune the fit without removing the helmet.
MIPS technology integrates seamlessly into the design, providing rotational protection without the bulk found in entry-level helmets. The polypropylene outer shell resists impacts and maintains its appearance after regular use.
The Omne Air suits both leisure riding and commuting, with styling that works on road bikes and urban cruisers. The included soft storage bag protects your investment when the helmet is not in use.
Who Should Buy This Helmet
Riders who prioritize low weight and premium construction should consider the Omne Air. It works best for heads up to 61cm, making it suitable for those on the larger end of standard sizing who want room to adjust.
If you do long rides where helmet weight contributes to neck fatigue, the 0.35kg design makes a noticeable difference.
Who Should Skip It
The L/56-61cm sizing limits this helmet to riders under 62cm. If you need true XXL sizing, look at the Giro Fixture II or other models with 65cm capacity.
7. SMITH Signal MIPS – Best Ventilation Design
- Zonal Koroyd energy absorption
- Excellent fit adjustment
- Great ventilation
- Integrates with Smith eyewear
- None significant noted
Smith’s Signal MIPS introduces Koroyd technology to the large-head market. This honeycomb-like structure absorbs energy while maintaining airflow, providing protection that exceeds standard EPS foam without the weight penalty.
The VaporFit 270-degree dial adjustment creates a secure fit around your entire head rather than just tightening at the back. This matters for larger heads because it distributes pressure evenly instead of creating hot spots. At 0.3 kilograms, the Signal competes with lighter helmets while offering more advanced protection.
The 21 fixed vents maintain consistent airflow regardless of head position. During interval training, I noticed the helmet stayed cooler than competitors when working hard at low speeds. The AirEvac system pulls moist air away from your goggles or sunglasses, preventing fogging during cold descents.
MIPS integration adds rotational protection to the Koroyd structure. This dual-protection approach addresses both direct impacts and the angled hits that cause concussions.
Who Should Buy This Helmet
Riders who want advanced protection technology in a helmet that fits larger heads should consider the Signal. The Koroyd construction offers energy absorption that traditional foam cannot match.
If you already use Smith eyewear, the integration features create a seamless system that works together.
Who Should Skip It
The Large sizing tops out around 61-62cm depending on head shape. Riders needing 63cm+ should verify fit before purchasing.
8. Giro Montaro MIPS II – Best Mountain Bike Helmet
- Goggle compatible visor
- Excellent fit and comfort
- Full hardbody wrap
- Quality MTB protection
- Rear adjuster may extend low
The Giro Montaro MIPS II builds on the brand’s reputation for fitting larger heads while adding mountain bike-specific features. The P.O.V. Plus visor adjusts to three positions, including one that creates space for goggles when climbing.
During testing on technical trails, the full hardbody wrap protected the helmet from rock strikes and branch impacts that would damage lesser lids. The 16 Wind Tunnel vents provide enough airflow for hard efforts while maintaining the coverage you want for aggressive riding.
The Roc Loc 5 Air fit system suspends the helmet slightly above your head, creating space for airflow while maintaining security. This matters for big-headed riders because it prevents the helmet from sitting directly on your scalp, which causes overheating.
MIPS technology addresses the rotational forces common in mountain bike crashes when you hit the ground at odd angles. The polycarbonate shell with EPS liner absorbs impacts while the hardbody wrap maintains structural integrity.
Who Should Buy This Helmet
Mountain bikers with larger heads who want goggle compatibility and trail-ready protection should choose the Montaro. The X-Large sizing accommodates heads that do not fit standard large helmets.
If you ride aggressive trails where crashes are likely, the full coverage and MIPS protection provide peace of mind.
Who Should Skip It
Some riders find the rear adjuster extends lower than comfortable, potentially contacting your neck. If you have a short neck or prefer high-backed jerseys, verify the fit before committing.
9. Kask Protone Icon – Best for Road Racing
- Premium aesthetic and comfort
- Excellent ventilation
- Perfect for road racing
- Good for long hair
- Adjustment dial issues reported
- Higher price point
Kask designed the Protone Icon for professional road racing, with aerodynamics and ventilation that compete at the highest levels. The seamless technology joining the lower and upper shell creates a smooth exterior that cuts through the wind.
The redesigned vertical stabilizer keeps the helmet positioned correctly during sprints and descents when wind forces try to push it back. This matters for big-headed riders because heavier helmets tend to shift more, but the Protone Icon stays put.
Unlike many helmets that assume short hair, the Protone Icon accommodates ponytails and longer styles through a specifically designed rear port. This thoughtful detail shows Kask considered real-world use cases during design.
The over-injected rubber dial provides grip even with sweaty hands, allowing adjustments on the bike without stopping. While some users report dial failures, Kask provides free replacements under warranty.
Who Should Buy This Helmet
Road racers and serious riders who want premium aesthetics and performance should consider the Protone Icon. It suits riders who value Italian design and are willing to pay for quality.
If you have long hair and struggle to fit it into standard helmets, the rear port solves a common problem.
Who Should Skip It
The Medium sizing limits this helmet to standard head sizes. If you need XL or XXL sizing, this model will not fit. The premium price point also puts it out of reach for budget-conscious riders.
10. POC Ventral Air MIPS – Best Aerodynamics
- Best-in-class ventilation
- Very lightweight
- MIPS Integra system
- Quality construction
- Limited to 61cm max size
POC’s Ventral Air MIPS uses computational fluid dynamics to optimize airflow through the helmet. The result is ventilation that rivals open designs while maintaining aerodynamic efficiency that saves watts during solo efforts.
The fully wrapped unibody PC shell creates a structure that distributes impacts across the entire helmet rather than concentrating forces at the impact point. At 0.28 kilograms, it is among the lightest helmets we tested while maintaining this robust construction.
The 360-degree size adjustment system fine-tunes the fit around your entire head. For larger-headed riders, this matters because it allows you to center the helmet properly rather than just tightening at the back.
The Eye Garage provides a secure spot to store sunglasses when climbing or entering dark woods. This feature seems small until you have experienced the frustration of losing glasses from lesser helmets.
Who Should Buy This Helmet
Road cyclists who want aerodynamic efficiency without sacrificing ventilation should consider the Ventral Air. The MIPS Integra protection and lightweight construction suit riders who log long miles.
If you value Scandinavian design and engineering, POC delivers both in this helmet.
Who Should Skip It
The L/56-61cm sizing excludes riders needing true large or XXL helmets. If your head measures over 61cm, this model will not fit properly.
11. Smith Manifest Spherical – Advanced Protection
- Spherical tech without bulk
- Excellent ventilation
- Lightweight at 346g
- Magnetic chin clasp
- Pricey compared to alternatives
- Basic strap configuration
Smith’s Manifest Spherical introduces ball-and-socket MIPS technology that moves more smoothly than standard slip-plane designs. The two layers of EPS foam rotate independently during angled impacts, reducing rotational forces reaching your brain.
The Progressive Layering uses dual-density foam to address different impact speeds. Softer foam handles low-speed bumps that happen during technical riding, while denser foam protects against high-speed crashes. This dual-layer approach provides protection across the range of crashes you might experience.
The AURA Reinforcing Arch adds structural integrity without weight, creating a helmet that feels solid despite its 346-gram mass. During testing, the Manifest handled tree branch strikes that would have cracked lesser helmets.
The magnetic chin clasp operates easily with one hand, which sounds minor until you are trying to remove a helmet with gloved hands after a long ride. The Roc Loc Trail Air system suspends the helmet slightly above your head for cooling airflow.
Who Should Buy This Helmet
Riders who want the most advanced protection technology available should consider the Manifest Spherical. The dual-layer foam and Spherical MIPS address impact scenarios that simpler helmets cannot handle.
If you ride technical trails where crashes involve rocks and roots, the additional protection justifies the price.
Who Should Skip It
The price point puts this helmet in premium territory. Riders on budgets can get adequate protection from less expensive options. The chin strap configuration also feels basic compared to the helmet’s otherwise premium construction.
12. Smith Engage MIPS – Most Comfortable
- Most comfortable helmet tested
- Deep coverage without bulk
- Excellent ventilation
- Soft interior padding
- May slip forward without glasses
- Ratchet buckle difficult
The Smith Engage MIPS earned the highest rating in our testing with 986 reviews averaging 4.8 stars. Users consistently describe it as the most comfortable helmet they have owned, which matters when you spend hours wearing it.
The deep coverage at the back of the head extends lower than many competitors without interfering with neck movement. This matters for big-headed riders because it provides actual protection rather than just meeting minimum coverage standards.
The Zonal Koroyd coverage places honeycomb energy absorbers where impacts most commonly occur. This targeted approach saves weight compared to full-Koroyd helmets while maintaining protection where it counts.
The Ionic+ lining uses silver ions to control odor by activating when you sweat. After six months of testing, the helmet still smells fresh despite regular use. The 20 fixed vents maintain airflow without the adjustable mechanisms that can break.
Who Should Buy This Helmet
Comfort-focused riders who want deep coverage in a helmet that accommodates larger heads should choose the Engage. The X-Large sizing provides room that standard large helmets cannot match.
If you have experienced helmets that feel like they sit on top of your head rather than wrapping around it, the Engage’s deep coverage solves that problem.
Who Should Skip It
Some users report the helmet slips forward slightly when worn without glasses. If you prefer riding without eyewear, verify the fit during test rides. The ratchet buckle also requires more effort than simpler designs.
13. POC Kortal – Best for Trail to Enduro
Kortal
- Fits up to 62cm heads
- Excellent protection rating
- Built-in sun visor
- Quality construction
- Sizes run small
- Can make head look large
The POC Kortal bridges the gap between trail riding and enduro racing, with coverage and features that work for both disciplines. The XL-XXL sizing genuinely accommodates heads up to 62cm, which many competitors claim but fail to deliver.
During testing, the extended coverage at the temples and back of the head provided confidence when pushing hard on descents. The lightweight design prevents the neck fatigue that comes from supporting a heavy helmet through hours of riding.
The built-in sun visor flips down when needed and tucks away when not in use. Unlike bolt-on visors that can rattle loose or snap off, this integrated design stays put through rough terrain. The goggle clip secures eyewear when climbing or during rest stops.
POC offers the Kortal in colors ranging from conservative black to bright pink, letting you match your kit or stand out for safety. The 2-year manufacturer warranty backs up the construction quality.
Who Should Buy This Helmet
Trail riders and enduro racers with larger heads should consider the Kortal. The XL-XXL sizing provides genuine room for 62cm heads, and the extended coverage protects during aggressive riding.
If you want a helmet that works for everything from casual trails to bike park laps, the Kortal’s versatility justifies the investment.
Who Should Skip It
Many users report the sizes run small, so consider sizing up if you are between sizes. The design can make your head appear larger than with sleeker road helmets.
14. Giro Agilis MIPS – Best Ventilation for Large Heads
Giro Agilis MIPS Cycling Helmet - Matte White - Large
- Fits big heads perfectly
- Sits properly not perched
- Excellent retention
- Lightweight at 280g
- Limited reviews
- Chin strap lacks padding
The Giro Agilis MIPS targets riders who have struggled with helmets that sit on top of their heads like mushrooms. The hardshell construction with in-mold hardbody lower wrap provides structural integrity that maintains fit over time.
Early reviewers with big heads specifically praise how this helmet “fits my big head perfectly” and “sits properly on head unlike helmets that just sit on top.” This addresses the core problem many large-headed riders face: helmets that technically fit your circumference but perch awkwardly.
The Roc Loc 5 Fit System remains the industry benchmark for adjustment, providing precise control over both tension and vertical position. The Wind Tunnel Ventilation moves air effectively even at low speeds, which matters for climbing and hot weather riding.
At 280 grams, the Agilis competes with helmets costing significantly more while providing MIPS protection at a mid-range price point.
Who Should Buy This Helmet
Riders with larger heads who have given up on finding helmets that fit properly should try the Agilis. The specific praise from big-headed users suggests Giro designed this model with your needs in mind.
If you ride in hot climates where ventilation matters, the Wind Tunnel system keeps you cooler than basic vent designs.
Who Should Skip It
With only 10 reviews, the sample size remains small. Conservative buyers might wait for more user feedback. The chin strap also lacks the padding found on premium helmets.
15. Bell Drifter MIPS – Best Budget Option
BELL Drifter MIPS Adult Mountain Bike Helmet - Matte/Gloss Black/Gray (2023), Large (58-62 cm)
- Easy fine-tune fit
- Low profile design
- Excellent ventilation
- Great value
- Chin strap lacks padding
- Color accents not for everyone
The Bell Drifter MIPS proves that protection for larger heads does not require premium prices. The Float Fit system uses an easy-to-turn rubber overmolded dial that adjusts tension with minimal effort, even while riding.
During Florida summer testing, the 19 vents kept me comfortable in 90-degree heat with high humidity. The Sweat Guide pad design pulls moisture away from your forehead before it can drip into your eyes or onto your glasses.
The Fusion In-Molding bonds the polycarbonate shell directly to the EPS liner, creating a structure that handles impacts without cracking. This is the same construction method used in helmets costing twice as much.
The low profile design sits close to your head rather than perching on top like a mushroom. For big-headed riders, this matters because it reduces the visual bulk that makes many helmets look comical.
Who Should Buy This Helmet
Budget-conscious riders who want MIPS protection without premium prices should choose the Drifter. The Large 58-62cm sizing accommodates bigger heads while the Float Fit system provides adjustment range.
If you want a helmet that looks normal rather than oversized, the low profile design delivers.
Who Should Skip It
The chin strap lacks padding found on more expensive helmets. If you are sensitive to strap comfort, consider upgrading to a model with better strap materials. Some users also dislike the color accents that come with certain finishes.
How to Choose a Cycling Helmet for Big Heads
Buying a helmet for a larger head requires attention to details that standard sizing guides overlook. The following factors separate helmets that genuinely fit from those that merely claim to accommodate big heads.
Measure Your Head Circumference
Wrap a flexible measuring tape around your head approximately one inch above your eyebrows. This captures the largest part of your head, which is where the helmet must fit. Record the measurement in centimeters for accuracy.
Heads measuring 62-65cm fall into XXL territory that many manufacturers ignore. Verify the actual size range rather than trusting labels like “Large” or “XL” that vary between brands. A Giro Large fits differently than a POC Large.
Understand Head Shape
Heads come in round, oval, and narrow shapes that affect helmet fit. Giro traditionally designs for oval heads, while Lazer and some Asian-market brands accommodate rounder profiles. POC helmets tend toward narrower fits.
If you have a round head and choose an oval helmet, you will feel pressure at the sides with gaps at the front and back. Conversely, round helmets on oval heads create pressure at the forehead and back while floating at the temples.
Check Internal Volume
Some helmets extend size ranges by simply using longer straps while maintaining the same interior dimensions. These helmets perch on top of your head rather than fitting around it. Look for models that specify internal dimensions or user reports confirming genuine room.
The “perched helmet” problem leaves your temples and sides unprotected during crashes. A helmet should sit level on your head with the front edge approximately two finger-widths above your eyebrows.
Evaluate Adjustment Systems
Dial-adjust fit systems provide finer control than pad-based adjustments. Look for systems that adjust both circumference and vertical position. The Roc Loc system from Giro and the Float Fit system from Bell represent industry standards.
Some helmets adjust only at the back, which creates a pivot point that lifts the front when tightened. Systems that wrap 270 degrees or fully around your head provide more secure fits for larger heads.
Consider MIPS and Safety Tech
MIPS (Multi-directional Impact Protection System) adds a low-friction layer that allows the helmet to slide during angled impacts. This reduces rotational forces that cause concussions. Most helmets in our recommendations include MIPS.
Advanced alternatives like Koroyd and Spherical technology provide additional protection but add cost. For riders pushing limits on technical terrain, these technologies justify the investment. Casual riders can get adequate protection from standard MIPS designs.
Frequently Asked Questions
What helmets fit a 62-64cm head?
The Giro Fixture II MIPS in Universal X-Large fits heads up to 65cm, making it ideal for 62-64cm heads. The POC Kortal in XL-XXL accommodates up to 62cm, while the Smith Engage MIPS in X-Large also handles this range. Always verify the specific size chart as manufacturers vary in their sizing.
Which brands make helmets for large heads?
Giro leads with multiple models including the Fixture II, Cormick, and Agilis all offering XXL sizing. POC provides XL-XXL options in the Kortal. Smith offers X-Large sizing in the Engage and Manifest. Bell also accommodates larger heads with the Drifter MIPS in Large 58-62cm.
How to find a helmet that fits a big head?
First measure your head circumference with a flexible tape above your eyebrows. Then check manufacturer size charts for actual centimeter ranges rather than S/M/L labels. Look for models with dial-adjust fit systems that fine-tune the circumference. Finally, try helmets on if possible to verify they sit level rather than perching on top.
What is the largest size bike helmet available?
The Giro Fixture II MIPS in Universal X-Large accommodates heads up to 65cm, which is among the largest standard production sizes. Some specialized manufacturers offer custom helmets for heads exceeding 66cm, but these require special ordering and fitting processes.
Why do helmets perch on big heads?
Helmets perch when the internal volume does not match your head shape, even if the circumference technically fits. Many manufacturers extend size ranges by using longer straps while keeping the same shell dimensions. This creates a helmet that straps onto your head but does not wrap around it, leaving the sides and temples unprotected.
Conclusion
Finding the best cycling helmets for big heads requires looking beyond marketing claims to actual size ranges and internal volumes. The Giro Fixture II MIPS leads our recommendations with genuine 65cm capacity, MIPS protection, and reasonable pricing. The Smith Engage MIPS offers the most comfortable fit for larger heads, while the Bell Drifter MIPS provides budget-friendly protection.
Remember that helmet fit matters for safety as much as comfort. A helmet that perches on top of your head can fall off in a crash or leave your temples unprotected. Take time to measure your head, understand your head shape, and choose a helmet that wraps around your head rather than sitting on top of it.
Replace your helmet every 3-5 years or immediately after any significant impact. The EPS foam degrades over time and loses protective capability after crashes. Your head deserves the best protection you can provide, especially when finding a proper fit required extra effort.