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    MSRP
    Where to Buy
    $1

    At

    Category
    Fitness
    2.9
    Frame
    Aluminum
    Steel
    Wheels
    Aluminum
    Wheel Size
    700c
    Rim
    Altus
    Drivetrain
    3 × 8
    Brand Site

    specialized.com

    Summary
    The Specialized Sirrus is a 700c aluminum frame fitness bike with modest components and rim brakes.

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    Insights
    Gear Range

    A bike with lower gearing will be easier to ride up steep hills, while a higher top end means it will pedal faster down hills.

    Lowest gear

    (climbing)

    38 mph

    Sirrus

    Highest gear

    (descending)

    Geometry
    Specs
    Frame

    Specialized A1 Premium Aluminum, fully-manipulated butted tubing, integrated lower bearing, fender/rack eyelets

    Fork

    Specialized steel

    Bottom Bracket

    Cartridge bearings, square spindle

    Headset

    1-1/8"" FSA integrated cartridge lower, external sealed upper bearings

    Stem

    Alloy, 4-bolt, 20-degree rise, 25.4mm clamp

    Handlebar

    Specialized flat bar, alloy, 6-degree backsweep, 25.4mm

    Saddle

    Body Geometry Targa Sport, steel rails, 155mm

    Seatpost

    Alloy, 2-bolt, 12.5mm offset, 27.2mm

    TypeRigid

    Pedals

    Nylon flat

    Groupset
    Rear Derailleur

    Shimano Altus, 8-speed

    Front Derailleur

    Shimano FD-M191

    Crank

    Shimano Altus, 8-speed triple, w/ chainguard

    Shifters

    Shimano EF-51, EZ Fire

    Cassette

    Shimano, 8-speed, 11-32

    Chain

    KMC X8

    Brakes

    Front: Die-cast, alloy V-brake, 60mm 1pc. pad, linear pull, Rear: Die-cast, alloy V-brake, 60mm 1pc. pad, linear pull

    TypeRim

    Brake Levers

    Alloy V-brake, two-finger, linear pull

    Wheels
    Rims

    Alloy double-wall, CNC sidewalls, 32h

    Front Hub

    Double-sealed, ground race, dual-lock nuts w/ 17mm contact side, 5mm QR

    Rear Hub

    Double-sealed, loose ball, dual-lock nuts

    Tires

    Front: Specialized Nimbus, 26TPI, wire bead, Flak Jacket protection, 700x28c, Rear: Specialized Nimbus, 26TPI, wire bead, Flak Jacket protection, 700x28c

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