We'll take care of you. Period.
It's our mission to provide you with world-class hospitality every time you visit us online or in-store. We're always here to help you. It's the Trek way.
'It's in a class of its own'
'You can't put a price on safety, but this is a pretty good start'
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'Excellent style and features'
'Styling, retention system and safety features score big at this price'
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'Good bang for your buck to protect your head'
'A very comfortable fit in a clean package'
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Go By Bike
Planet Earth is our home and our responsibility – we must do our part to preserve it. Learn how you can join the #GoByBike movement and help make a difference in the future of our planet and all who call it home.
Read moreHow to ride more safely
Want to do more than wear a helmet? Check out this guide to riding safer.
Learn moreHow to clean your bike helmet
To ensure that your bike helmet looks and performs its best, it's important to properly clean and care for it. Check out our simple guide to learn how to maintain your bike helmet. It's easy to do and takes little time!
Read moreProduct features
Rally WaveCel mountain bike helmet
An off-road helmet with WaveCel technology that balances comfort and performance for trail riders who value safety.
What is WaveCel?
WaveCel is a revolutionary helmet technology designed to be more effective than traditional foam helmets in protecting against certain cycling-related accidents. Its collapsible cellular structure lines the inside of your helmet and is designed to work like a crumple zone to absorb the force of an impact before it reaches your head. Click below to learn more.
A TIME Magazine Invention of the Year
Our breakthrough WaveCel helmet technology was included in TIME Magazine's list of 100 Best Inventions for making the world better, smarter and even a bit more fun. Watch the video to learn more about the science behind this revolutionary helmet technology. From TIME
©2020 TIME USA LLC. All rights reserved. Used under licence
Virginia Tech validation
All WaveCel helmets received the highest rating from Virginia Tech’s third-party testing facility. This unbiased assessment proved Bontrager’s WaveCel helmets to be among the highest level of protection available to cyclists with a 5-STAR rating.
BOA® fit system
Easily secure and adjust the helmet fit with just one hand.
Drop-in coverage
The extended, back-of-helmet shell offers additional rear protection.
LockDown strap dividers
Easily adjust straps to fit perfectly with adjustable, lightweight strap dividers.
Soft helmet pads
Super-comfortable internal pads wick moisture on hot days and hard efforts and are easy to wash after a full day of fun.
Helmet-buyers guide
Not sure which helmet is right for you? Check out our helmet-buyer's guide to learn everything you need to know about bike helmets.
See the guideCrash Replacement Guarantee
With our Crash Replacement Guarantee, we will provide you with a free replacement helmet if it is involved in a crash within the first year of ownership. Simply contact us or your local retailer with the crashed helmet, original sales receipt, details of the incident and a return address for your replacement.
Learn more30-Day Unconditional Guarantee
If for any reason you’re not satisfied with a Bontrager or Trek aftermarket purchase, return the item, along with the original sales receipt to the original place of purchase within 30 days for an exchange or refund. Think of it as a 30-day test ride.
Learn more| Size | S | M | L |
|---|---|---|---|
| Circumference | 51-57 cm | 54-60 cm | 58-63 cm |
| Fit system | BOA® | BOA® | BOA® |
| Pad material | Moisture wicking pads | Moisture wicking pads | Moisture wicking pads |
| Buckle type | Standard buckle | Standard buckle | Standard buckle |
| Includes | Crash Replacement Guarantee | Crash Replacement Guarantee | Crash Replacement Guarantee |
| Weight | 360g | 400g | 430g |