Diamondback Release 4C Carbon 27.5 Bike - 2018

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Building on the success of what several magazines deemed DB's best trail bike, the Diamondback Release 4C carbon 27.5 bike puts bottomless-feeling rear suspension on an even stiffer, lighter chassis.

  • Features

    • Light, stiff carbon monocoque frame with Boost 148x12mm Maxle dropout
    • Shimano SLX 11-speed single-ring drivetrain provides consistent shifting and, thanks to its generous 46-tooth granny gear, makes short work of climbs you'd normally despise
    • Fox Float DPS EVOL LV rear shock and Fox 34 Performance Float fork provide smooth bump-eating performance (150/130mm suspension travel, front and rear)
    • KS LEV Si dropper post (with Southpaw remote lever) adds maneuverability on descents
    • Specs and images 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 Full-Suspension Mountain Bikes
  • Technical Specs

    Best Use

    Mountain Biking

    Mountain Bike Style

    All-mountain

    Bike Frame Material

    Carbon

    Frame

    Monocoque carbon

    Bike Suspension

    Full Suspension

    Fork

    Fox 34 Performance Float, 150mm travel, Grip 3 position dampener, rebound adjust, 1.5 in. tapered steerer, 110x15mm thru-axle

    Fork Travel

    150 millimeters

    Rear Shock

    Fox Float DPS EVOL LV, Performance, 3 position lever, 200x57mm

    Crankset

    Race Face Aeffect Cinch w/ steel 30T "narrow wide"

    Bottom Bracket

    Race Face Outboard bearing

    Shifters

    Shimano SLX M7000, 11-speed

    Rear Derailleur

    Shimano SLX M7000, Shadow Plus, 11-speed

    Rear Cogs

    Shimano SLX M7000, 11-speed, 11-46T

    Number of Gears

    11 gear(s)

    Brake Type

    Hydraulic Disc Brake

    Brakes

    Shimano Deore M6000 hydraulic disc, w/ 180mm front/180mm rear RT-66 rotors

    Brake Levers

    Shimano Deore M6000

    Rims

    Diamondback Blanchard 28R, tubeless compatible, 32h

    Front Hub

    32h Alloy, Boost 110x15mm thru-axle, sealed cartridge bearing

    Rear Hub

    32h Alloy, Boost 148x12mm thru-axle, 5 sealed cartridge bearing, cassette

    Wheel Size

    27.5 inches

    Tires

    Maxxis Minion DHF 27.5 x 2.3 in. EXO, TLR, folding/Maxxis Minion DHR 27.5 x 2.3 in. EXO, TLR, folding

    Tire Width

    2.3 inches

    Handlebar Shape

    Flat Bar

    Handlebar

    DB35 Alloy, 780mm wide, 15mm rise, 35mm bar bore

    Stem

    DB35 Alloy, 40mm reach, 35mm bar bore

    Seat Post

    KS LEV SI internal dropper, w/ SouthPaw remote, 31.6mm, SM/MD=125mm, LG/XL=150mm

    Saddle

    WTB Volt Race

    Pedals

    DB4L Alloy Platform w/ replaceable pins

    Headset

    FSA No. 57 sealed cartridge

    Chain

    KMC X11EL, 11-speed

    Dropper Post

    Yes

    Weight

    31 lbs. 8 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"-6'2" 6'2"-6'6"
    Reach 406.0 429.0 451.0 473.0
    Stack 584.0 597.0 603.0 612.0
    Effective Top Tube 585.0 610.0 635.0 660.0
    Seat Tube Center-Top 394.0 432.0 483.0 533.0
    Standover Height 739.0 740.0 743.0 749.0
    Head Tube Length 100.0 110.0 120.0 130.0
    Head Tube Angle (degrees) 66.0 66.0 66.0 66.0
    Seat Tube Angle (degrees) 73.0 73.0 73.0 73.0
    Wheelbase 1133.0 1160.0 1186.0 1213.0
    Chainstay 425.0 425.0 425.0 425.0
    Fork Offset 44.0 44.0 44.0 44.0

    Sizing Notes

    Bike measurements are stated in millimeters unless otherwise indicated.

  • Reviews
    6 reviews with an average rating of 4.3 out of 5 stars

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