Bontrager Rally WaveCel Mountain Bike Helmet

please select a Size
Choose a shipping method
To buy, sign in as an REI Co-op Member or join now.
Members get an estimated $16.00 back on this item.
Join the co-op today to get access to a lifetime of benefits.

Members, get an estimated $16.00 back on this item as a part of your annual .

The high-style, high-value Bontrager Rally WaveCel mountain bike helmet has trail-specific features that balance comfort and performance for off-road adventures.

  • Features

    • Rotational motion can cause brain injuries; with WaveCel, a collapsible cellular structure reduces rotational motion to the brain during impact
    • Awarded 5 stars by Virginia Tech, a fully independent helmet-testing facility working to identify which helmets best reduce concussion risk
    • Extended back-of-helmet shell offers additional rear protection
    • BOA® Fit System lets you easily secure and adjust your helmet fit with one hand
    • Soft, comfortable and moisture-wicking helmet pads are washable
    • LockDown dividers make helmet strap management clean and easy to adjust
    • Adjustable visor offers multiple coverage options
    • Complies with U.S. CPSC Safety Standard for bicycle helmets for persons age 5 and older
    • Crash Replacement Guarantee provides a free helmet replacement if involved in a crash within the first year of ownership


    To find your size, position a tape measure just above your ears and about 1 in. above your eyebrows. Keep the tape level to measure the circumference around the largest part of your head and then find the corresponding size in the Technical specs info.
    View all Bontrager Mountain Bike Helmets
  • Technical Specs

    Best Use

    Mountain Biking

    Helmet Style

    Mountain Bike

    Helmet Construction


    Shell Material


    Head Circumference

    S: 20-22.4 inches

    M: 21.3-23.6 inches

    L: 22.8-24.8 inches

    XL: 23.6-26 inches






    S: 12.6 ounces

    M: 14.1 ounces

    L: 15.2 ounces

    XL: 16.5 ounces



  • Reviews
    56 reviews with an average rating of 4.5 out of 5 stars

    Loading Reviews...
  • Questions & Answers

    Loading Questions...