2026 Specialized Sirrus X 5.0
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Sirrus X 5.0
Fitness / Gravel Bike · Carbon · Shimano Deore 12-Speed · Future Shock 1.5
Offering an unprecedented combination of comfort, efficiency, and nimble handling, the Sirrus X excels on pavement, dirt, and any terrain in between. The patent-pending Compliance Junction frame design provides the smoothest ride in its class — engineered vertical compliance without sacrificing lateral rigidity translates to more comfort, control, and efficiency on all roads, paved or gravel. Like all Specialized carbon bikes, the geometry of each frame is uniquely crafted using their Rider-First Engineered™ philosophy, meaning that for every frame, each tube size and carbon layup is specifically selected to achieve the optimal balance of rigidity, weight, and responsiveness — no matter what size, the world's best ride. Class-leading light weight, exceptional pedaling efficiency, and steering precision merge for confident, nearly telepathic handling characteristics.
FACT 9r Carbon Frame
Specialized FACT 9r carbon frame with internal cable routing — keeps cables tucked inside the frame for a clean look, protection from the elements, and reduced cable rub. The 9r carbon layup balances stiffness for power transfer with compliance for ride quality at a competitive weight class.
Rider-First Engineered™ Geometry
Each frame size uses its own unique carbon layup and tube sizing, specifically selected to achieve the optimal balance of rigidity, weight, and responsiveness — guarantees that every rider, regardless of frame size, gets the same world-class ride quality that Specialized builds into their top-tier carbon bikes.
Compliance Junction Frame Design
Patent-pending Compliance Junction delivers vertical flex across the rear triangle without sacrificing lateral rigidity — soaks up road buzz and gravel chatter from the seatstays while keeping the bike stiff and efficient under hard pedaling and cornering loads.
Future Shock 1.5 Suspension
Specialized's unique Future Shock 1.5 suspension sits inside the headtube — prevents harsh high-frequency vibrations from bumps and broken pavement from reaching the handlebars, keeping hands fresher on long rides and improving front-end control on rough gravel without the weight or complexity of a traditional fork.
40c Pathfinder Tubeless-Ready Tires
Wide 700x40c Pathfinder tubeless-ready tires with GRIPTON® T2/T5 compound — ideal for mastering variable terrain from smooth pavement to chunky gravel, providing confident traction and comfort off the beaten path without sacrificing efficiency on the road.
Shimano Deore 12-Speed Drivetrain
Minimalist yet efficient Shimano Deore 12-Speed drivetrain with wide-range 11-51T cassette — gives a massive gear range for steep climbs and fast descents with a single chainring up front, simplifying the bike and reducing maintenance while keeping shifts crisp and reliable.
Shimano Hydraulic Disc Brakes
Shimano hydraulic disc brakes with 160mm rotors front and rear — deliver reliable, consistent stopping power on pavement and loose surfaces, with confident modulation for technical descents and wet-weather rides.
FACT 9r Carbon Fork
Specialized FACT 9r carbon monocoque fork with flat-mount disc, 12x100mm thru-axle, and low-rider mounts — keeps the front end light and precise under steering input, while the thru-axle adds stiffness for confident cornering and the low-rider mounts let you bolt on a rack or fender for commuting.
Plug + Play Fender/Rack Compatibility
Frame and fork feature Plug + Play rack and fender mounts, plus top tube mounts — Sirrus X 5.0 is fender and rack compatible with 51c DRYTECH fenders, making it easy to rack and roll for commuting or wet-weather training without aftermarket bracket work.
Class-Leading Lightweight Build
Sub-23 lb complete build weight (10.14 kg in size LG) — class-leading light weight combined with the FACT 9r carbon frame and fork delivers exceptional pedaling efficiency, easy climbing, and responsive handling that feels nearly telepathic in technical terrain.
Frameset
Frame
Specialized FACT 9r Carbon, Fitness Geometry, 1x Drivetrain, 12x142 thru-axle, internal cable routing, flat-mount disc, Plug + Play rack/fender mounts
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 rotor
Rear Brake
Shimano BR-MT200, hydraulic disc, 160mm rotor
Drivetrain
Rear Derailleur
Shimano Deore SGS 12-Speed RD-M6200 Shadow Plus Derailleur
Shift Levers
Shimano Deore 12-Speed SL-M6200-R Rapidfire Plus Shifter
Cassette
Sunrace, 12-Speed, 11-51T
Chain
KMC X12EPT, 12-speed, anti-corrosion coating w/ reusable Missing Link™
Crankset
Prowheel Alloy, XS: 165mm / S–M: 170mm / L–XXL: 175mm, 42T
Chainrings
Narrow-Wide Steel 42T
Bottom Bracket
BB68+, BSA24, 68mm
Wheels & Tires
Rims
700C disc, double-wall alloy, 30mm depth, 21mm internal width, disc-specific
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 TLR Fast Gravel Tire 700x40c, GRIPTON® T2/T5 compound
Rear Tire
Pathfinder TLR Fast Gravel Tire 700x40c, GRIPTON® T2/T5 compound
Inner Tubes
Standard 40mm SV 700x32-50 (tubeless-ready rims, can be run tubeless)
Cockpit
Handlebars
Alloy Mini Rise, 9-degree backsweep, 15mm rise, 31.8mm
Stem
Future Stem, Comp
Grip
Specialized Neutralizer, Body Geometry, locking grip
Saddle
Body Geometry Power Sport, steel rails
SeatPost
Alloy, 2-bolt, 14mm offset, 27.2mm
Seat Binder
Integrated w/ frame
Accessories
Pedals
VP Platform, Alloy Body
Weight
Weight
10.14 kg (22 lb, 5.7 oz) — size LG
Product Info
Product ID
263370
Sizes Available
XS, S, M, L, XL, XXL (6 sizes)
Fit Notes
Rider-First Engineered™ Sizing
Each frame size uses its own unique carbon layup and tube sizing — guarantees that every rider, regardless of frame size, gets the same world-class ride quality that Specialized builds into their top-tier carbon bikes. Use the geometry table below to find your size: aim for a stack/reach ratio that matches your preferred riding position, and check stand-over height against your inseam.
Component Sizing
Crank Length
XS: 165mm · S/M: 170mm · L/XXL: 175mm
Handlebar Width
680mm (all sizes)
Stem Length
XS: 60mm · S: 70mm · M: 80mm · L: 90mm · XL: 100mm · XXL: 110mm
Saddle Width
XS/S: 155mm · M/L/XL/XXL: 143mm
Seatpost Length
XS/S/M: 300mm · L/XL: 350mm · XXL: 400mm
Cockpit Geometry
Stack (mm)
XS: 580 · S: 600 · M: 625 · L: 650 · XL: 680 · XXL: 710
Reach (mm)
XS: 350 · S: 365 · M: 380 · L: 395 · XL: 410 · XXL: 425
Head-Tube Length (mm)
XS: 107 · S: 128 · M: 151 · L: 176 · XL: 208 · XXL: 237
Head-Tube Angle
XS/S: 69.5° · M: 70° · L/XL: 70.5° · XXL: 71°
Frame Geometry
Seat-Tube Length (mm)
XS: 355 · S: 416 · M: 453 · L: 483 · XL: 533 · XXL: 563
Seat-Tube Angle
XS: 74° · S/M/L/XL/XXL: 73.5°
BB Drop
80mm (all sizes)
BB Height
268mm (all sizes)
Chain-Stay Length
440mm (all sizes)
Front-Center (mm)
XS: 597 · S: 619 · M: 637 · L: 656 · XL: 681 · XXL: 700
Wheelbase (mm)
XS: 1024 · S: 1047 · M: 1065 · L: 1084 · XL: 1109 · XXL: 1128
Top-Tube Length (horizontal, mm)
XS: 521 · S: 547 · M: 568 · L: 590 · XL: 614 · XXL: 644
Bike Stand-Over Height (mm)
XS: 703.3 · S: 748.3 · M: 780.5 · L: 807.1 · XL: 847.7 · XXL: 872.5
Fork Geometry
Fork Length (full)
395mm (all sizes)
Fork Rake/Offset
51mm (all sizes)
Trail (mm)
XS/S: 76 · M: 72 · L/XL: 69 · XXL: 66
Quick Reference — All Sizes Side-by-Side
XS
Stack 580 · Reach 350 · HTA 69.5° · STA 74° · WB 1024 · ST 355
S
Stack 600 · Reach 365 · HTA 69.5° · STA 73.5° · WB 1047 · ST 416
M
Stack 625 · Reach 380 · HTA 70° · STA 73.5° · WB 1065 · ST 453
L
Stack 650 · Reach 395 · HTA 70.5° · STA 73.5° · WB 1084 · ST 483
XL
Stack 680 · Reach 410 · HTA 70.5° · STA 73.5° · WB 1109 · ST 533
XXL
Stack 710 · Reach 425 · HTA 71° · STA 73.5° · WB 1128 · ST 563
Shipping Policy
Components:
All component items (wheels, drivetrains, suspension, brakes, etc.) ship within 2-5 business days of purchase.
Bicycles:
Complete bikes typically ship within 2–3 weeks due to build, tuning, and inspection times. You will receive tracking information as soon as your order is ready to ship.
Riding Gear & Apparel:
Riding gear and apparel orders (helmets, jerseys, gloves, etc.) ship within 2-5 business days.
Returns & Exchanges:
If you received the wrong size or wish to exchange an item, it must be returned in original condition—unused, uninstalled, and with all packaging intact.
For full details, please see our Refund Policy before initiating a return.
