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The Diamondback Century 1 105 Disc bike is an endurance road bike designed for the rider who's looking for an alternative to the stereotypical fit and high prices of top-end race-oriented bikes.

  • Features

    • It's outfitted with an amazing component group for its price: TRP disc brakes, an 11-speed Shimano 105 drivetrain and HED wheels
    • Redesigned for 2017, the 7005 aluminum alloy frame uses custom butted and beautifully formed tubing to deliver a balance of strength, durability, light weight and sleek looks
    • Using Enhanced Performance geometry, frame incorporates a taller head tube to take the stress off your neck and back, providing a more comfortable fit and less ride fatigue
    • DBR Podium Air-formed Disc alloy fork with/1.5" tapered alloy steerer
    • TRP Spyre disc brakes, with 160mm rotor up front and 140mm rotor in the rear, deliver modulation and power in all conditions
    • Shimano 105 2x11 drivetrain
    • Specs are subject to change


    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 Endurance Bikes
  • Technical Specs

    Best Use

    Road Cycling

    Bike Frame Material



    7005 aluminum




    Shimano FC-RS500 Compact, 50/34t

    Bottom Bracket

    Shimano outboard bearing


    Shimano 105 ST-5800 Dual Control, 11-speed

    Front Derailleur

    Shimano 105 FD-5800, 31.8mm band clamp

    Rear Derailleur

    Shimano 105 RD-5800, 11-speed

    Rear Cogs

    Shimano 105 CS-5800 Cassette, 11-speed, 11-32t

    Number of Gears


    Brake Type

    Mechanical Disc Brake


    TRP Spyre mechanical disc, 160mm front/140mm rear rotors

    Brake Levers

    Shimano 105 ST-5800


    HED Flanders C2+ Disc, 24h

    Front Hub

    24h alloy, sealed cartridge, HighLow flange, 12mm thru-axle; CNC disc mount

    Rear Hub

    24h alloy, sealed cartridge, HighLow flange, 142x12mm thru-axle; CNC disc mount, Cassette

    Wheel Size



    Michelin Dynamic Sport, 700x28c

    Tire Width

    28 millimeters

    Handlebar Shape

    Drop Bar


    HED Tour flattop drop bar, 31.8mm bar bore


    HED Tour stem, +/-7 rise, 31.8mm bar bore

    Seat Post

    HED Tour, 27.2mm


    DB Performance Road


    Wellgo Alloy Road


    FSA NO.42, sealed cartridge for tapered head tube


    KMC X11L, 11-speed


    22 lbs.

    Bike Weight

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



  • Size Chart

    52 cm 54 cm 56 cm 58 cm 60 cm
    Height Range 5'4"- 5'7" 5'7"- 5'9" 5'9"- 6'0" 6'0"- 6'3" 6'3"- 6'5"
    Reach 375 372 378 388 392
    Stack 558 572 591 609 627
    Effective Top Tube 535 545 560 575 590
    Seat Tube Center-Top 490 510 530 550 570
    Standover Height 767 788 807 830 851
    Head Tube Length 145 160 180 200 220
    Head Tube Angle (degrees) 72 72.8 73 73 73
    Seat Tube Angle (degrees) 74 73.3 73 73 72.5
    Bottom Bracket Height 273.5 276 276 278.5 278.5
    Wheelbase 994 987 997 1013 1022
    Chainstay 415 415 415 415 415
    Fork Offset 47.5 47.5 47.5 47.5 47.5

    Sizing Notes

    Bike measurements are stated in millimeters.

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