2026 Specialized Sirrus X 5.0

Sirrus X 5.0 Sirrus X 5.0 Fitness / Gravel Bike · Carbon · Shimano Deore 12-Speed · Future Shock 1.5 Description Key Features Specifications Geometry 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