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    Sirrus Disc2017 Specialized
    Recommended
    MSRP
    Where to Buy
    —
    $1

    At

    Category
    		Fitness
    3.3
    Frame
    		Aluminum
    		Steel
    Wheels
    		Aluminum
    Wheel Size
    		700c
    		Mechanical Disc
    		Tourney, Altus
    Drivetrain
    		3 × 8
    Brand Site

    specialized.com

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

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    Similar Bikes
    Insights
    Ride Feel

    Based on frame geometry and build specs.

    Rider Position
    relaxedaggressive
    Sirrus Disc
    Other Fitness bikes
    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 Disc

    Highest gear

    (descending)

    Geometry
    Specs
    Sirrus Disc2017 Specialized
    Frame

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

    BB Standard: BSA, Threaded

    Fork

    Steel, straight blades, IS disc mount, fender/rack mounts

    Bottom Bracket

    BSA, square taper, cartridge bearings

    Stem

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

    Handlebar

    Specialized, alloy, 9-degree backsweep, 25.4mm

    Saddle

    Canopy Sport, steel rails

    Seatpost

    Alloy, 12mm offset, 2-bolt clamp, 27.2mm

    Type: Rigid

    Pedals

    Specialized Fitness platform

    Groupset
    Rear Derailleur

    Shimano Altus, 8-speed

    Front Derailleur

    Shimano Tourney, top swing, dual pull, 31.8mm band clamp

    Crank

    Stout, forged alloy, 48/38/28T w/chainguard

    Shifters

    Shimano EF500, EZ Fire Plus, 8-speed

    Cassette

    Shimano, 8-speed, 11-32t

    Chain

    KMC X8, 8-speed w/reusable MissingLink

    Brakes

    Front: Mechanical disc, resin pads, 160mm, Rear: Mechanical disc, resin pads, 160mm

    Type: Mechanical Disc

    Wheels
    Rims

    Disc, 6061 aluminum double-wall

    Spokes

    Stainless, 14g

    Front Hub

    Specialized disc, double-sealed, loose ball bearings, 9mm QR

    Rear Hub

    Specialized disc, loose ball bearings, for Shimano 8-/9-speed cassettes, QR

    Tires

    Front: Nimbus Reflect, 700x32mm, 26TPI, Flak Jacket protection, Rear: Nimbus Reflect, 700x32mm, 26TPI, Flak Jacket protection

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