Bontrager Rally WaveCel Helmet



An off road helmet with WaveCel technology that balances comfort and performance for trail

Rally WaveCel is a high style, high value off road helmet with trail specific features and WaveCel, a leading technology in the protection against cycling related head injuries.


  • WaveCel advanced helmet technology
  • Virginia Tech 5 STAR Rated
  • BOA® Fit System lets you easily secure and adjust helmet fit
  • Three way adjustable visor
  • Extended back of helmet shell offers additional rear protection
  • LockDown dividers make helmet strap management
  • Soft, comfortable, moisture wicking, and washable helmet pads
  • Crash Replacement Guarantee
  • Available in 4 Colorways

MSRP: $149.99 USD

Bontrager Jet WaveCel Helmet

Safety has never looked so cool. Jet is a kids’ bike helmet with skater inspired style, proven WaveCel protection, and a parent approved price.

A kids’ bike helmet for wherever kids roam, built with style, comfort, and WaveCel, a leading technology in the protection against cycling related head injuries.


  • WaveCel advanced helmet technology
  • Helmet meets ASTM standards
  • Fidlock magnetic buckle
  • Free sticker kit!
  • Dialed fit system provides a secure and comfortable fit
  • Soft, thick helmet pads are removable for easy cleaning
  • Crash Replacement Guarantee
  • Available in 4 Colorways
  • Comes in Child (48 52cm) and Youth (50 55cm) sizes

MSRP: $99.99 USD

Bontrager Rally WaveCel Helmet


Trek has been designing helmets for over 30 years, since safety standards were last updated. In that time, we were one of the first major bike brands to adopt slip liners, partnering with MIPS, and the first to launch an innovative new way to help reduce rotational forces transmitted to the brain with WaveCel. Trek continues to push the boundaries of helmet testing with its Crash Reconstruction Data Research. Our long standing Crash Replacement Guarantee benefits the consumer and helps us collect helmet impact data including impact locations, volume, centricity, scratch length, and more to test at energies related to real world scenarios. This helps us create better test methods and is something unique that Trek brings to the industry. We share our data and findings at global helmet conferences to lead conversations in helmet safety for cycling. The results of this testing program expand our expertise for each new helmet we produce.

Bontrager Rally WaveCel Helmet

Every Bontrager WaveCel helmet is backed by a 30-day guarantee. If you don’t love it, we’ll take it back. It’s that simple.

If your WaveCel helmet is impacted within the first year of ownership, we’ll replace it for free through the Bontrager Crash Replacement Guarantee.

To learn more about the Rally WaveCel, Click Here
To learn more about the kids Jet WaveCel, Click Here.
To learn more about WaveCel, Click here or scroll down.

Bontrager Rally WaveCel Helmet




What is the different between XXX, Blaze, Specter, Charge and the Starvos, Rally adult helmets?
The WaveCel insert of Bontrager XXX, Specter, Blaze and Charge WaveCel helmets covers the front, rear, top and sides of the internal area. The WaveCel insert of Bontrager Starvos, Rally and Jet WaveCel helmets covers the front, top and sides of the internal area, while the rear is EPS and may have properties similar to EPS helmets.

Can I fit sunglasses under Starvos WaveCel or Rally WaveCel?
Yes. The helmet was designed for sunglass clearance for most models that are commercially available, however everyone’s head is different so how they sit on your head will be unique to each rider.

Can I strap a bike light to these helmets?
No, however Trek does offer models such as Blaze WaveCel and Charge WaveCel with integrated bike light mounts.

Bontrager Rally WaveCel Helmet

Are these helmets rated for e-bike use?
No, however the Bontrager Charge WaveCel helmet passes the NTA 8776 Standard making it a Speed-Pedelec approved helmet. Find out more about Charge WaveCel at

Can I change the color of the WaveCel?
No. The WaveCel material is designed to be permanently fixed to the helmet and is not replaceable. Viz material colorways are available in select WaveCel models.

How long is the warranty for these helmets?
Two years. See for more information.

Bontrager Rally WaveCel Helmet


Is the WaveCel kids helmet heavier than an EPS kids’ helmet?
Yes, WaveCel adds a little weight, but nothing outweighs safety.

Can I use the kids helmet it without a fit system?

What’s the different between a hard-shell and a “regular” helmet?
The outer shell material is thicker than what you would find on a typical adult helmet. This helps prevent dents and scuffs from a child mishandling the helmet. Technically speaking, the hard-shell is ABS and our standard outer shells are polycarbonate.

What is the colored material on the bottom of the kids’ helmet brim?
The material is a soft touch PU that helps protect the EPS material under the hard-shell when kids are mishandling their helmets and it is very easy to clean.

Bontrager Rally WaveCel Helmet


What is WaveCel?
WaveCel is a collapsible cellular material that lines the inside of your helmet. It’s designed to lessen the motion associated with brain injury through a three-step change in material structure.

Who created WaveCel?
WaveCel was created by a team of doctors, researchers, and engineers who have been studying head injury prevention for the last 15 years. During this time, they’ve received multiple National Institute of Health (NIH) grants to support their work.

What sorts of safety testing have been performed?
First and foremost, this helmet passes all the current required safety standards. If you don’t want to take our word for it, Virginia Tech, a third-party helmet review institution, has assessed WaveCel helmets with their own test criteria and awarded all adult WaveCel helmets with top honors. You can see those results HERE.

How does a helmet with WaveCel compare to a normal helmet without WaveCel?
Please refer to each product’s individual page to learn more about that particular product. The probability of injury in an actual accident depends on numerous factors, including nature of impact and individual health. No helmet can completely prevent injury, including concussions, in every type of cycling accident.

Is a standard foam (EPS) helmet unsafe?
Standard foam (EPS) helmets pass the current required safety standards. They’re designed to protect against direct linear impacts and skull fractures. WaveCel is designed to protect against the way most cycling accidents happen: ungracefully, with twists, turns, and multiple rotational impacts to the head. But a helmet is safer than no helmet.

How is WaveCel different from other honeycomb systems?
Some cycling helmets use honeycomb shaped materials but primarily address linear impacts to prevent skull fractures. These systems may include a slip liner to the helmet to address rotational forces. WaveCel addresses both linear and angular impacts but also flexes to make a uniform dome shape that wraps mostly around the inside of the helmet.

Can it sustain multiple impacts?
No. WaveCel is designed to absorb the energy from an impact through crushing and shearing. If a WaveCel helmet is impacted, it must be replaced.

How do I know when to replace it?
Your helmet should be replaced any time it is impacted in a crash. Even if your helmet is not involved in a crash, helmet parts lose strength over time. As with all Bontrager helmets, WaveCel helmets should be replaced every three years.

Bontrager WaveCel

Does WaveCel change the fit of the helmet?
During our testing, we received consistent feedback from users about how comfortable it feels. Standard foam helmets have a hard, rigid shell which produces pressure points. WaveCel is a flexible dome inside the helmet that naturally conforms to different head shapes for a more comfortable fit. Give it a try!

How does it affect breathability?
WaveCel changes the way air flows through the helmet. It channels airflow throughout the entire helmet, allowing for better ventilation than standard EPS foam. Because a WaveCel helmet has less insulating foam material, it lets out a lot of heat and allows air to flow through it easier.

Is it heavier than a helmet without WaveCel?
This revolutionary helmet technology adds only 53g on average to Bontrager helmets—an amount you’re unlikely to notice. That’s less than your favorite nutrition bar, 1/3 of a banana, or about two ice cubes. Yes, WaveCel adds a little weight, but nothing outweighs safety.

Why isn’t anyone else using WaveCel in the cycling industry?
WaveCel is exclusive to Bontrager helmets. We began working with WaveCel in their early stages of development and have collaborated with them every step of the way. With our combined knowledge, we’ve created a game-changing product. You will likely see many other industries adopt this groundbreaking technology soon.

Bontrager WaveCel

Can I buy just the WaveCel (and put it in my regular helmet)?
No. WaveCel material is not sold separately—and you can’t remove it from a Bontrager helmet.

Should I be concerned that some of the cells look deformed in parts of my new helmet?
You may see some regions that have a higher density or a relief cuts on the sides to help the material conform. That’s totally normal. This is the nature of the material. However, if there’s any damage or deformation due to an impact, you should replace your helmet.

Should I be concerned with hair getting stuck or material causing abrasions to my head?
The results of the tests we performed during the early stages of development have shown a very low risk of skin abrasion from the WaveCel material. For further protection, we put a layer of coating on the inside of the helmet.

What happens if it gets too hot, too cold, or if it rains?
All WaveCel helmets went through an extensive variety of protocol testing in hot, cold, and wet conditions. WaveCel passed all tests with flying colors.

Do UV rays affect how safe the material is?
WaveCel is designed to withstand UV exposure during the lifespan of the helmet. We are required to test all helmets with UV exposure, and these helmets passed all tests.

I sweat, like, a lot—will that hurt this technology?
Nope! Sweat won’t hurt this technology, but it’s a good idea to clean your helmet regularly if you’re a heavy sweater. Additional NoSweat pads with a silicone channel come included with XXX WaveCel and Blaze WaveCel models to help you manage perspiration.

What can render the helmet un-usable?
Like all helmets, WaveCel helmets must be replaced if they’re impacted. Additionally, compounds such as bug spray, solvents, oils, paint, and aerosols can degrade helmet materials. See the owner’s manual for a complete list.

Bontrager Rally WaveCel Helmet
Bontrager Rally WaveCel Helmet
Bontrager Rally WaveCel Helmet
Bontrager Rally WaveCel Helmet
Bontrager Jet WaveCel Helmet
Bontrager Jet WaveCel Helmet
Bontrager Jet WaveCel Helmet
Bontrager Jet WaveCel Helmet