Diamondback Axis Sport 27.5 Bike - 2015

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Smaller than a 29er but faster than standard 26 in. wheels, the Axis Sport 27.5 mountain bike uses "just right" 27.5 in. wheels for singletrack flow at a price both experts and newbies will love.

  • Features

    • 27.5 in. wheels are quicker and lighter than 29ers, but offer the same benefits of large-diameter wheels—more speed and better traction
    • Butted 6061-T6 aluminum frame offers a lightweight and agile feel in the saddle with high durability to take the punishment that rough trails can dish out
    • SR Suntour XCR-LO suspension fork supplies 100mm of travel for smoothing out rough trails; turnkey lockout offers increased performance on climbs
    • Drivetrain features intuitive trigger shifters and responsive derailleurs to offer dependable shifts throughout the 24 gear combinations
    • Schwalbe Rapid Rob tires offer good all-around traction on the trail
    • Platform pedals don't require bike-specific shoes, making it easy to go from off-road to around town
    • Specs and images are subject to change


    This bike comes with Coast to Coast Support, which includes:
    • 1 year of free adjustments (see more below)
    • In-store bike assembly
    • Pickup in store or curbside
    • Bike experts available at 170+ bike shops
    REI Co-op Members get more:
    • Free flat tire repairs (labor only; parts not included)
    • 20% off shop services
    More about our free adjustments:
    New bikes go through a normal break-in period, after which they should be readjusted. All bicycles sold at REI include free adjustments for one year after purchase date—as many times as you need. Included: derailleur and brake adjustments, lateral wheel truing, hub and headset bearing adjustments, tire inflation and chain lubrication. Not included: replacement or installation of new components or accessories, any other services. Call your local REI Co-op Bike Shop for more information.

    View all Diamondback Hardtail Mountain Bikes
  • Technical Specs

    Best Use

    Mountain Biking


    6061 aluminum

    Bike Suspension

    Front Suspension


    SR Suntour XCR-LO, 100mm travel


    Suntour XCT, 44/32/22

    Bottom Bracket

    Sealed cartridge


    SRAM X4

    Front Derailleur

    Shimano Altus

    Rear Derailleur

    SRAM X4

    Rear Cogs

    SRAM PG-820 8-speed, 11-32

    Number of Gears

    24 gear(s)


    Tektro Auriga hydraulic disc

    Brake Levers

    Tektro Auriga


    Diamondback SL-7

    Front Hub

    DB SL-7, 32h

    Rear Hub

    DB SL-7, 32h

    Wheel Size

    27.5 inches


    Schwalbe Rapid Rob, 27.5 x 2.25

    Handlebar Shape

    Flat Bar


    DB aluminum


    DB aluminum

    Seat Post

    DB micro adjust


    DB Race


    Wellgo aluminum platform




    KMC Z82


    31 pounds

    Bike Weight

    Bike weight is based on median size, as sold, or the average of two median sizes.



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