Hands-on Gear Review

Bell Star Pro Review

Bell Star Pro
Price:  $280 List | $149.90 at Amazon
Pros:  Aero, adjustable vents
Cons:  Uncomfortable, lacks adjustability
Bottom line:  An innovative aero road helmet that falls short of the competition due to poor ventilation and fit.
Editors' Rating:   
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Sizes:  S, M, L
Weight Grams:  280g (M) Lens 21g
Size Range:  55-59cm
Manufacturer:   Bell

Our Verdict

The Bell Star Pro Has Been Discontinued

Bell has been making bike helmets for a long time, and the Star Pro is their offering for the racer seeking to cheat the wind. The Star Pro is a full aero helmet, comparable to the Bontrager Ballista and the Giro Air Attack. The integrated Zeiss eyewear looks cool but received mixed reviews from our testers. Unlike other aero helmets we tested, the Star Pro has vents that can be opened and closed using a sliding lever on the top of the helmet. Ventilation when you want it and aero when you need it. But does it work? Read on to find out, and find out how the Star Pro ranks amongst the other aero helmet contenders.



RELATED REVIEW: The Best Road Bike Helmets

Our Analysis and Test Results

Review by:
Curtis Smith

Last Updated:
Friday
February 17, 2017

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Performance Comparison


The Bell Star Pro looks fast  but it heats up on the climbs with limited ventilation.
The Bell Star Pro looks fast, but it heats up on the climbs with limited ventilation.

Comfort


The Star Pro is the lowest scoring helmet we tested for comfort. Our low score is primarily a reflection of the Float Fit system. Lack of fore and aft adjustment makes positioning the rear portion of the retention band in a comfortable position very difficult. In addition, the anchor points for the retention system are positioned outside of the padding and they push uncomfortably against the head.

Adjustability


Bell uses what they call the Float Fit system on the Star Pro. It differs from the fit system used on the Bell Gage in that it does not have a wide range of fore and aft adjustment. Essentially, the circumferential fit band is designed to float up and down to accommodate different head shapes, kind of a one size fits all approach. In practice it does not work, and unless you get lucky and have the perfect head shape, you will likely suffer with comfort issues due to lack of adjustability. The Y-buckles also differ in design to what is found on the Bell Gage and Bell Overdrive. They are adjustable, but they are much larger and extremely difficult to adjust.

Th Bell Star Pro with Zeiss Lens attached.
Th Bell Star Pro with Zeiss Lens attached.

The Star Pro comes with a really cool looking set of Zeiss lenses. The lenses slide into a slot on the front of the helmet brim and a magnet holds them in place. Unfortunately, the position and height of the lens is not adjustable. The fixed position of the lens is such that the lower border of the lens is constantly in view and is distracting at best but also has the potential to be dangerous, depending on head position, as it can impair vision. To be fair, some of our testers liked the lens and it fit them well. You may get lucky and have the anatomical features that put it in the perfect position.

Weight


The Bell Star Pro is relatively lightweight compared to the Air Attack Shield, coming in 25g lighter than its counterpart with lenses attached. Without lenses, the Star Pro weighs 280 grams, and is lighter than the POC Octal Aero. The Bontrager Ballista is our Top Pick for aero helmets and it weighs 266g. The Star Pro finishes in the middle of the aero helmets we tested.

Looks and Design


Side view of the Bell Star Pro with Zeiss lens attached.
Side view of the Bell Star Pro with Zeiss lens attached.
All of the aero helmets we have tested have somewhat questionable looks, but we would rank the Star Pro close to the Bontrager Ballista in terms of looks. We think they look better than the Giro Air Attack and POC Octal Aero. When it comes to design, we have to acknowledge the innovative venting system that can be opened and closed. In the closed position it is said to provide better aerodynamics, while the open position is intended to increase ventilation.

Opening the Active Aero system is as easy as reaching up and sliding the lever that is on the top of the helmet. Bell also includes an ICEDOT sticker on the helmet. The sticker has a unique pin number that can be activated on their website. If you have an accident and somebody sees the sticker, they can text the pin number to ICEDOT and they will notify your preselected emergency contact. Cool idea, but the sticker is on the outside of the helmet and could get ripped off or damaged in a crash. It would be nice if they doubled up and put one on the inside of the helmet as well.

The ICEDOT sticker on the Bell Star Pro.
The ICEDOT sticker on the Bell Star Pro.

The integrated lens design is a neat feature, but could benefit from a more adjustable mounting system. There is a magnet under the polycarbonate shell that holds the lens on the outside of the helmet when not in use. Bell also includes a drawstring style soft storage bag for the helmet and a separate soft storage bag for the Zeiss lenses.

The Zeiss air shield lens can be stored on the shell of the helmet  and is held in place by a magnet on the Bell Star Pro.
The Zeiss air shield lens can be stored on the shell of the helmet, and is held in place by a magnet on the Bell Star Pro.

Ventilation


A sliding lever on the top of the helmet is used to open and close the vents on the Bell Star Pro.
A sliding lever on the top of the helmet is used to open and close the vents on the Bell Star Pro.
We were excited to test the Star Pro to find out how the closeable vent concept would work. With the vents closed, the Star Pro is extremely hot. Bell incorporates what they call Over Brow ventilation. Three large vents are positioned on the underside of the helmet brim and are designed to channel air over the top of the head to enhance ventilation. We don't feel the design is all that effective, especially when using the Zeiss lens, which blocks air from getting into the Over Brow vents.

The vents on the top and rear of the helmets can be closed or opened using the Active Aero lever on the top of the helmet. The increase in airflow with the vents opened vs. closed is noticeable, but provides minimal cooling. Open or closed, the Star Pro is not a well-ventilated helmet. If you spend a lot of time riding in the cold then perhaps this would not be an issue for you, but it certainly detracts from the helmets versatility. The Bontrager Ballista is a night and day difference to the Star Pro; it provides excellent ventilation for an aero helmet.

The Bell Star Pro with the vents in the closed position.
The Bell Star Pro with the vents in the closed position.
The Bell Star Pro with the vents in the open position.
The Bell Star Pro with the vents in the open position.

Durability


The Star Pro scores an 8/10, due to its extensive use of polycarbonate material to cover and protect the EPS foam. The only exposed EPS is located in the vents, where it is not prone to damage. All other components of the helmet also proved to be durable during testing. Our only complaint is that the Active Aero sliding mechanism is prone to getting bound up with dirt and is very difficult to clean out. We got mud in the vent closure system while using the helmet for cyclocross. If you plan to only use the helmet for road riding, this would likely not be an issue.

The polycarbonate shell extends around the base of the Bell Star Pro enhancing durability.
The polycarbonate shell extends around the base of the Bell Star Pro enhancing durability.

Best Applications


The Star Pro is best suited to road racing in cool to cold conditions.

Value


The Star Pro is expensive, with a retail price of $280. If the lenses work for you, then you can consider that it saves you from needing to buy sunglasses. Unfortunately, other aero helmets we tested performed much better than the Star Pro, and are substantially cheaper. The Star Pro does not represent a good value.

Conclusion


The Bell Star Pro is an innovative aero road helmet with a unique ventilation system that can be opened and closed. We applaud out-of-the-box thinking, but the Star Pro falls short of top rated aero helmets like the Bontrager Ballista, in performance.

Front view of the Bell Star Pro without the air shield.
Front view of the Bell Star Pro without the air shield.

Curtis Smith

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Most recent review: February 17, 2017
Summary of All Ratings

OutdoorGearLab Editors' Rating:  
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 (2.0)
Average Customer Rating:  
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Rating Distribution
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2 star: 100%  (1)
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