$215.00
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An off-road helmet with WaveCel technology that balances comfort and performance for trail riders who value safety.
A major advancement in the protection against cycling-related head injuries
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 is a collapsible cellular structure that lines the inside of the helmet. This Bontrager-exclusive technology disrupts the safety standards that the industry has accepted for over 30 years.
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.
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.
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
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.
Size (head circumference) |
Small (51-57 cm) |
Medium (54-60 cm) |
Large (58-63 cm) |
X-Large (60-66 cm) |
Fit system |
BOA® |
BOA® |
BOA® |
BOA® |
Pad material |
Moisture wicking pads |
Moisture wicking pads |
Moisture wicking pads |
Moisture wicking pads |
Buckle type |
Standard buckle |
Standard buckle |
Standard buckle |
Standard buckle |
Weight |
360g |
400g |
430g |
435g |
**Trek Bikes reserves the right to make changes to the product information contained on this site at any time without notice, including with respect to equipment, specifications, models, colours, materials and pricing.
**Weights are based off pre-production products at time of publication. Weights may vary in final production.
Size |
Circumference |
S |
51 - 57 cm 20" - 22" |
M |
54 - 60 cm 21" - 24" |
L |
58 - 63 cm 23" - 25" |
XL |
60 - 66 cm 24" - 26" |