Diamondback Hook 27.5 Bike - 2018

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For quick rips on your local trails, all-day suffer fests and explorations of faraway terra incognita, the capable Diamondback Hook 27.5 bike proves that "affordable" isn't code for "lame."

  • Features

    • Reliable, hand-built aluminum hardtail frame is long in the front and short in the back to keep your center of gravity low, aiding in stability
    • Plush SR Suntour XCM front suspension fork with 120mm travel tackles trail obstacles
    • SRAM single-ring 1x8 drivetrain supplies you with simplicity and smooth shifting
    • Durable DB SL-7 double-wall 27.5 in. wheels rock quickly over a variety of terrain
    • Tektro Aries mechanical disc brakes provide powerful stopping, even in wet or muddy conditions
    • Frame is compatible with internally routed dropper posts (dropper post not included)
    • Specs and images are subject to change

    Imported.

    Free Adjustment Period:
    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

    Mountain Bike Style

    Trail

    Bike Frame Material

    Aluminum

    Frame

    6061 aluminum

    Bike Suspension

    Front Suspension

    Fork

    SR Suntour XCM, 120mm travel, 30mm stanchions, coil spring with preload adjust

    Fork Travel

    120 millimeters

    Crankset

    Alloy arm with 30T steel "narrow wide" single ring

    Bottom Bracket

    Sealed cartridge

    Shifters

    SRAM X4 8-speed

    Front Derailleur

    Full ISCG-05 chain guide with roller

    Rear Derailleur

    SRAM X3, 8-speed

    Rear Cogs

    SRAM PG820, 8-speed, 11-32T

    Number of Gears

    8 gear(s)

    Brake Type

    Mechanical Disc Brake

    Brakes

    Tektro Aries mechanical disc, with 160mm rotors

    Brake Levers

    Tektro 2 Finger alloy linear with reach adjust

    Rims

    32h Diamondback SL-27.5 double-wall

    Front Hub

    32h Alloy with CNC disc mount

    Rear Hub

    32h Alloy cassette with CNC disc mount

    Wheel Size

    27.5 inches

    Tires

    WTB Vigilante, 27.5x2.3"

    Tire Width

    2.3 inches

    Handlebar Shape

    Riser Bar

    Handlebar

    Diamondback, 750mm wide, 15mm Rise, 31.8 bar bore

    Stem

    Diamondback "Shortie", 45mm reach, 31.8 bar bore

    Seat Post

    Alloy micro adjust, 30.9mm

    Saddle

    DB Sync'r saddle

    Pedals

    DB4L Alloy platform

    Chain

    SRAM X4 8-speed

    Weight

    30 lbs. 15 oz.

    Bike Weight

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

    Gender

    Unisex

  • Size Chart

    S M L XL
    Height Range 5' 4" - 5' 7" 5' 7" - 5' 10" 5'10" - 6' 1" 6'1" - 6' 4"
    Reach 398 417 432 446
    Stack 577 595 614 633
    Effective Top Tube 575 600 620 640
    Seat Tube Center-Top 400 450 500 550
    Standover Height 728 769 799 830
    Head Tube Length 105 125 145 165
    Head Tube Angle (degrees) 68 68 68 68
    Seat Tube Angle (degrees) 73 73 73 73
    Wheelbase 1087 1113 1135 1157
    Chainstay 430 430 430 430
    Fork Offset 44 44 44 44

    Sizing Notes

    Measurements are in millimeters unless otherwise noted.

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