Specialized Sirrus X 4.0 EQ 2025

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

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

Features

• Future Shock 1.5 delivers 20mm of compliance to give maximum comfort and control over the rough stuff.
• Added Carbon Fork and an A1 SL alloy frame delivers a build 1.6lb (.8kg) lighter than the 3.0 model—no heavy hybrid featuring a mountain style suspension fork comes close.
• Wide-range 1x12 Shimano Deore shifting delivers precise shifting for the long haul.
• Racktime rack for your favorite bags and panniers, and integrated DRYTECH fenders to keep the spray away.
• Extra-bright front and rear lighting powered by a Shimano Dynamo hub to see and be seen.

Tech Specs

Frameset

• Frame: Specialized A1 SL Premium Aluminum, Fitness Geometry, fully manipulated butted tubing, internal cable routing, flat-mount disc, 12x142mm thru-axle, Plug + Play rack/fender mounts

Suspension

• Fork: Specialized FACT 9r Carbon Monocoque, flat-mount disc, 12x100mm thru-axle, low rider mounts, Plug + Play fender mounts, Future Shock 1.5

Brakes

• Front Brake: Tektro HD-R510, hydraulic disc, 160mm
• Rear Brake: Tektro HD-R510, hydraulic disc, 160mm

Drivetrain

• Shift Levers: Shimano Deore M6100, 12-speed
• Rear Derailleur: Shimano Deore, M6100, 12pd, Shadow Plus
• Cassette: Sunrace CSMZ800, 12-speed, 11-51t
• Chain: KMC X12EPT, 12-speed, anti-corrosion coating w/ reusable Missing Link™
• Crankset: Forged aluminum arms, 24mm spindle, Narrow-wide steel chainring 40t, chainguard
• Chainrings: 40T
• Bottom Bracket: Threaded BSA 68mm

Wheels & Tires

• Rims: 700C disc brake, double-wall alloy, 22mm depth, 21mm internal width
• Front Hub: Shimano Dynamo, Center Lock disc, 12x100mm Thru-axle spacing, 32H
• Rear Hub: Alloy, Center lock Disc, High-Low Flange, Sealed Cartridge Bearing, 32H, 12mm Axle, 142mm Spacing
• Spokes: Stainless, 14g
• Front Tire: Pathfinder Sport, 700x38
• Rear Tire: Pathfinder Sport, 700x38
• Inner Tubes: Standard 40mm SV 700x32-50

Cockpit

• Stem: Specialized, 3D-forged alloy, 4-bolt, 7-degree rise
• Handlebars: Alloy Mini Rise, 9-degree backsweep, 15mm rise, 31.8mm
• Grip: Specialized Neutralizer, Body Geometry, locking grip
• Saddle: Body Geometry Power Sport, steel rails
• SeatPost: Alloy, 2-bolt, 14mm offset, 27.2mm
• Seat Binder: Bolt-type, 31.8mm

Accessories

• Pedals: Specialized Body Geometry Fitness, Platform, Plastic
• Headlight: Herrmans H-Black Pro Dynamo LED Head Light
• Taillight: Herrmans H-Trace Mini Dynamo Rear Light
• Rack:Tubus, Rear Rack, 15kg Weight Limit, Aluminum
• Fenders: DryTech Fender, Front & Rear, Aluminum with Black Finish

Weight

• Producer's weight: 12.57 kg (27 lb, 11.4 oz)
• Weight Size: LG

Producer's note: Weights based on production painted frames as pictured. Actual weights will vary based on colourway, frame size, and component variation. Specifications are subject to change without notice.