Buying guide for best road bike helmets
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A helmet is one of the only safety-specific pieces of gear you need to ride a road bike. As a result, it is absolutely crucial that your helmet fit snugly, be comfortable to wear, and provide sufficient protection.
The three most common types of road bike helmets are fully vented, aerodynamic, and semi-aero. These different types have varying degrees of ventilation and aerodynamics that affect the feel and performance of the helmet. There’s no limit to the number of shapes, styles, and colors of road bike helmets, so it’s easy to find one that fits your taste or complements your bike.
A road bike helmet can be expensive, and it’s important to understand the different types available to find the one that meets your needs. That’s where we come in. After researching helmets from the most popular brands on the market, we found the SMITH Signal Cycling Helmet to be the best. It's a lightweight, comfortable helmet that comes with advanced features to keep you safe.
Editors’ picks
SMITH Signal Cycling Helmet
Editors' Favorite
Weight: 0.66 lb | Shell Material: Polycarbonate | Protection Technology: MIPS
Riders who want to feel light as a feather while cycling will appreciate the SMITH Signal Cycling Helmet for its lightweight, minimalist design. This helmet weighs just 0.66 pounds and has a shell made of durable polycarbonate material.
It’s a high-performance helmet featuring an EPS liner for enhanced comfort and improved airflow, which helps riders stay cool even in the hottest climates. The VaporFit system offers 270-degree fit adjustment with the turn of a dial for a custom fit, allowing cyclists to use it with just one hand while focusing on their ride.
The SMITH Signal Cycling Helmet strikes a terrific balance between performance, protection and cost. It’s not as durable as more expensive helmets, but intermediate-skilled riders working with a budget will love it.
LAZER Tonic KinetiCore Bike Helmet
Great Value
Weight: 8.47 oz | Shell Material: Polycarbonate | Protection Technology: KinetiCore
A lightweight design, rugged material and outstanding protection, the Lazer Tonic KenetiCore offers everything you need at a great price. Designed with an aero-vented construction, it has an aerodynamic structure that won’t weigh you down plus it offers exceptional breathability.
Made of durable polycarbonate, this helmet offers patented KinetiCore technology that has crumpled zones that disperse energy in the event of an accident. A foam lining further absorbs shock for added protection.
Bike riders love how well this helmet fits. In addition to coming in a choice of small, medium, large and extra large, it has a chin strap that’s easy to adjust for a precise fit. The TurnSys adjustment dial at the back of the helmet adjusts the helmet vertically so you can ride in comfort and safety.
Giro Agilis MIPS Cycling Helmet
Best Ventilation
Weight: 1.44 lb | Shell Material: Polycarbonate | Protection Technology: Integrated MIPS brain protection system
Weighing less than 2 pounds, the Giro Agilis MIPS Cycling Helmet is designed with MIPS technology that includes a foam inner lining to provide exceptional protection at different angles. It’s fully vented and features proprietary wind-tunnel ventilation for precise air movement around the head during rides. This makes it a good choice for riding in the summer or in warm climates.
This helmet is made of durable polycarbonate, a top choice for road bike helmets. We love the Roc Loc 5 system that allows you to adjust the fit and tilt of the helmet quickly with just one hand.
In addition to delivering reliable safety, this helmet looks great, too. It's a stylish choice that’s made for avid riders, and it comes in a range of numerous fun colors. With small, medium and large sizes plus an adjustable fit, there’s one available to fit most shoppers.
Thousand Chapter MIPS Adult Bike Helmet
Best for Commuters
Weight: 2.16 lb | Shell Material: Polycarbonate | Protection Technology: Integrated MIPS brain protection System
Do you often ride your bike when there isn’t much light out? If so, this Thousand Chapter MIPS Adult Bike Helmet is the right one for you. That’s because it has a rechargeable tail light that attaches with a strong magnet, and it’s simple to remove when riding during the day.
Weighing just over 2 pounds, this lightweight helmet is made of polycarbonate with MIPS technology to provide protection at different angles. A foam lining and removable pads offer extra protection. What’s more, the straps and dial allow you to adjust the helmet, which is available in small, medium and large, for a perfect fit.
Other features we appreciate are the eight vents that deliver nice airflow to keep you cool when riding on hot days. A hidden pop lock makes it easy to secure the helmet when your bike is parked and unattended.
Giro Aries Spherical Bike Helmet
Best Premium Helmet for Racing
Weight: 10 oz | Shell Material: Polycarbonate | Protection Technology: MIPS spherical technology
The Giro Aries Spherical Bike Helmet is a lightweight yet durable polycarbonate road bike helmet built for optimal protection. It’s made with a protective MIPS system with a reinforcement arch and ball-and-socket design that redirects force in the event of an accident to protect the head. Two foam densities provide extra protection riders appreciate, while adjustable straps and a retention dial makes adjusting this helmet a snap.
At less than a pound, the Aries feels light and comfortable to wear. This helmet also produces excellent airflow thanks to the aerodynamic structure that boasts deep channels. This combined with proprietary DryCore sweat control makes the Aries the perfect helmet for warm-weather riding as well as racing. It comes in small, medium and large sizes and a choice of colors for a great fit and look.
While this is one of the pricier models on our list, dedicated riders won’t mind considering all it has to offer. Safety features and a comfortable, adjustable fit by a top brand are reasons this is one of the best road bike helmets we considered.
Key considerations
Choosing a road bike helmet might seem like a fairly simple process: choose a style, find one that fits, and buy. But there is more to it than meets the eye, and not all road bike helmets function in the same way.
Types of road bike helmets
The three common varieties differ in airflow and aerodynamics. One isn’t necessarily safer than the others, but each is better suited to a style of biking.
Fully vented: These helmets have more air vents to keep your head cool. If you regularly bike in hot weather or just hate your head overheating while you ride, a fully vented helmet might be the right choice for you.
Aerodynamic: These helmets, also known as “aero” helmets, have little to no ventilation to provide maximum aerodynamics and speed. These are a popular choice for professional cyclists, though you’ll need to reach speeds of 25 miles per hour or more to experience a significant reduction in drag. If you opt for an aerodynamic helmet, you should also have a fully vented or semi-aero helmet for warmer conditions and casual riding.
Semi aero: These helmets are a more recent invention – a mix of aerodynamic and fully vented helmets. They offer enough ventilation to be used on hot days while reducing drag far better than a traditional fully vented helmet. If you only want to buy one helmet, this is a good option. These are also considerably less expensive than aerodynamic helmets on average.
Certifications and safety
While almost all helmets use expanded polystyrene foam that is designed to crush and absorb impact in the event of a crash, road bike helmets vary in their safety features. A quick way to determine the level of protection is to look at a helmet’s safety certifications. Most helmets indicate that they have passed either CPSC or CEN testing. For the safest possible helmet, look for the Snell certification as well.
CPSC certification: This indicates that a helmet has passed the safety tests of the U.S. Consumer Product Safety Commission (CPSC), which is standard for helmets made in the United States. These tests include a G-force drop test and a strap strength test.
Snell rating: These are safety standards issued by the nonprofit Snell Memorial Foundation and are fairly similar to the CPSC certification. The primary difference between the two is that the Snell organisation continues to test helmets after their initial creation to ensure that manufacturers are maintaining the same level of safety.
CEN certification: This is a European safety standard comparable to CPSC certification. It is somewhat less strict and often results in helmets that contain less polystyrene foam.
MIPS technology: The multi-directional impact protection system (MIPS) is designed to protect your head from rotational forces. MIPS comes in the form of a layer with reduced friction that allows your helmet to rotate slightly, thus reducing the rotation transferred to your head and brain. A MIPS layer results in a slightly heavier helmet and often a costlier one, too.
Fit
A properly fitted road bike helmet should fit snugly to your head without squeezing it. The front edge of the helmet should rest about an inch above your eyebrows. The strap should sit comfortably where your neck meets your jaw. Some road bike helmets have a tensioning band inside the helmet to secure it firmly to your head.
To measure yourself for a road bike helmet, wrap a flexible measuring tape around your head just above your eyebrows.
Road bike helmet features
Road bike helmets vary greatly in color and style and come with a number of features that improve fit, adjustability, and overall comfort.
Adjustments
The foam in a helmet isn’t designed to flex or move to accommodate your head, but there are two primary ways you can change the fit of a helmet: the adjustment system and the retention system.
Adjustment system: This refers to the way the helmet’s inner band can be tightened or loosened to fit your head. Many helmets don’t have a way to do this, but some have a dial at the back of the band that can be turned. This isn’t only a matter of finding a good fit; sometimes you might want to wear a cycling cap for extra warmth and need to loosen the helmet slightly.
Retention system: This is the adjustment of the chin strap to be looser or tighter. It should be easy to adjust the strap to fit properly beneath your jaw. The V-shaped portions of the strap near your ears should rest just below your earlobes without rubbing against your ears.
Hair port strap
If you have long hair, consider buying a helmet with a hair port strap in the back. This allows you to comfortably tuck a ponytail through the gap in the strap.
Style
There are too many different styles, colors, and patterns of road bike helmets to break them down into categories. Safety is the most important consideration when choosing a helmet, but you might also want to choose one that fits your taste and complements the colors of your bike and cycling gear. A brightly colored helmet can help to increase your visibility, too.
Road bike helmet prices
Inexpensive
Road bike helmets that cost $20 to $50 typically use heavier materials and are less likely to fit comfortably or be easily adjustable.
Mid-range
Most road bike helmets fall in the $50 to $150 range. Many of these are fully vented or semi-aero helmets and fairly lightweight, though they might lack a MIPS liner.
Expensive
You’ll spend $150 to $250 for a high-end road bike helmet that has a MIPS liner and an adjustment system for more comfort. These helmets are extremely lightweight and often aerodynamic in design.
Tips
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Wear your helmet correctly. A road bike helmet should rest just above your eyebrows, covering your forehead for maximum protection.
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Replace a damaged helmet. Any helmet that takes a bump in a crash should be replaced. Even if there is no noticeable damage, the helmet could fail to protect you in a future crash.
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Replace your helmet every five years. This is a general guideline. Pollution and general wear and tear can render the polystyrene foam ineffective.
- Check that your glasses fit comfortably with your helmet. Use vents to hold your glasses when you don’t need them.
FAQ
Q. How do I clean my road bike helmet?
A. Most helmets are submerged in water as a part of their testing, so the polystyrene foam should be fully waterproof. You can clean the outside and inside of your helmet with soap and water.
Q. Can road bike helmets be used for other types of biking?
A. While they can be used for commuting, mountain biking, and other types of biking, your safest option is to purchase a helmet for each type of riding because they vary in their design and safety features.
Q. Where should I store my road bike helmet?
A. It’s important to keep your helmet away from heat to avoid damaging the foam. Attics and cars are likely to become fairly hot in the summer. The best place to keep a road bike helmet is somewhere relatively cool, like a closet.
