Sirrus X 4.0 2026

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.

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 1x11 Shimano CUES shifting delivers precise shifting.

Technical Specifications

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

Shimano BR-MT200, hydraulic disc, 160mm

Rear Brake

Shimano BR-MT200, hydraulic disc, 160mm

Drivetrain

Shift Levers

Shimano Cues SL-U6000, 11-Speed

Rear Derailleur

Shimano Cues 11-speed w/ Shadow Plus

Cassette

Shimano, CS-LG400-11, CUES, 11-Speed, 11-50T

Chain

KMC eGlide for 11-Speed Cues

Crankset

Prowheel Alloy, XXS - XS: 165mm, S - M: 170mm, L - XL: 175mm

Chainrings

Narrow Wide Steel 42T

Bottom Bracket

Threaded BSA 68mm, 24mm spindle

Wheels & Tires

Rims

700C disc, double-wall alloy, 22mm depth, 21mm internal width, 32h

Front Hub

Alloy, sealed cartridge bearings, Center Lock, 12x100mm thru-axle, 24h

Rear Hub

Alloy, Center lock Disc, High-Low Flange, Sealed Cartridge Bearing, 32H, 12mm Axle, 142mm Spacing

Spokes

Stainless, 14g

Front Tire

Pathfinder Wirebead Fast Gravel 700X40C

Rear Tire

Pathfinder Wirebead Fast Gravel 700X40C

Inner Tubes

Standard 40mm SV 700x32-50

Cockpit

Stem

Future Stem, Comp

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, platform

* 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

	XXS	XS	S	M	L	XL
Crank Length	165mm	165mm	170mm	170mm	175mm	175mm
Handlebar Width	680mm	680mm	680mm	680mm	680mm	680mm
Stem Length	60mm	60mm	70mm	80mm	90mm	100mm
Saddle Width	155mm	155mm	155mm	143mm	143mm	143mm
Seatpost Length	300mm	300mm	350mm	350mm	400mm	400mm
Stack	587mm	590mm	606mm	635mm	651mm	672mm
Reach	355mm	371mm	376mm	382mm	386mm	398mm
Head-Tube Length	111mm	125mm	143mm	169mm	186mm	208mm
Head-Tube Angle	69.5°	70°	70°	71°	71°	71°
B-B Height	284mm	284mm	284mm	284mm	284mm	284mm
B-B Drop	70mm	70mm	70mm	70mm	70mm	70mm
Trail	78mm	75mm	75mm	68mm	68mm	68mm
Fork Length (full)	395mm	395mm	395mm	395mm	395mm	395mm
Fork Rake/Offset	51mm	51mm	51mm	51mm	51mm	51mm
Front-Center	602mm	618mm	629mm	634mm	644mm	663mm
Chain-Stay Length	440mm	440mm	440mm	440mm	440mm	440mm
Wheelbase	1074mm	1093mm	1033mm	1049mm	1060mm	1065mm
Top-Tube Length (horizontal)	529mm	549mm	559mm	573mm	581mm	599mm
Bike Stand-Over Height	700mm	722mm	750mm	778mm	810mm	831mm
Seat-Tube Length	360mm	395mm	440mm	470mm	510mm	530mm
Seat-Tube Angle	73.5°	73.5°	73.5°	73.5°	73.5°	73.5°