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Sirrus X 1.0 Step-Through

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Offering an unprecedented combination of comfort, efficiency, and nimble handling,…

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Offering an unprecedented combination of comfort, efficiency, and nimble handling, the Sirrus X excels on pavement, dirt, and any terrain in between.

SMOOTH, COMFORTABLE, AND EFFICIENT: Sirrus X provides the smoothest ride in its class. With bigger, confidence-inspiring tires, a slightly more upright riding position, and a super intuitive one-by drivetrain.RIDER-FIRST ENGINEERED: Like all Specialized performance bikes, the geometry of each frame is uniquely crafted. This means that for every frame, each tube size is specifically selected to achieve the optimal balance of rigidity, weight, and responsiveness to ensure that no matter what size you’re riding, you will experience the world’s best ride.

NIMBLE: Class-leading light-weight, exceptional pedaling efficiency, and steering precision merge for confident, nearly telepathic handling characteristics.

  • Lightweight A1 Alloy frame with clean internal cable routing, 3.5lbs (1.7kg) lighter than our Crosstrail Hydro model.

  • Maximum control through intuitive shifting with 1x8 wide range gearing, and powerful hydraulic disc brakes.

  • Float over rough terrain with fast rolling Specialized Pathfinder 42c tires featuring proprietary Gripton rubber compound.

Technical Specifications

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Frameset

Frame

2020 Sirrus X A1 ST Disc

Suspension

Fork

2020 Sirrus X Steel Disc

Brakes

Front Brake

Tektro MD-U310R, Mechanical Disc

Rear Brake

Tektro MD-U310R, Mechanical Disc

Drivetrain

Shift Levers

Shimano Altus SL-M315-7R, 7-Speed

Rear Derailleur

Shimano Acera RD-M3020, 7-Speed

Cassette

microSHIFT CS-H074, 12-40t, 7-Speed

Chain

KMC X8 w/ Missing Link™

Crankset

PROWHEEL, Alloy, 165mm

Chainrings

34T

Bottom Bracket

Square-tapered, 68mm

Wheels & Tires

Rims

700C disc brake, double-wall alloy, 22mm depth, 21mm internal width

Front Hub

Alloy, 6-bolt disc, loose ball bearing, quick-release, 32h

Rear Hub

Alloy, 6-bolt disc, 7-speed freehub, loose ball bearing, quick-release, 32h

Spokes

Stainless, 14g

Front Tire

Pathfinder Sport, 700x42mm

Rear Tire

Pathfinder Sport, 700x42mm

Inner Tubes

Standard 40mm SV 700x32-50

Cockpit

Stem

Alloy, 25.4mm, 10deg.

Handlebars

Double-butted alloy, 5-degree backsweep, 25.4mm

Tape

Specialized Neutralizer, Body Geometry, locking grip

Saddle

Bridge Sport, Steel rails, 155/143mm

SeatPost

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

Seat Binder

Bolt-type, 31.8mm

Accessories

Pedals

Specialized Body Geometry Fitness, platform, plastic

Product Details

Product ID

278561

* Weights based on production painted frames as pictured. Actual weights will vary based on colorway, frame size, and component variation. Specifications are subject to change without notice.

Geometry

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