2026 Specialized Sirrus X 2.0
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Sirrus X 2.0
Fitness / Gravel Bike · Aluminum · Shimano CUES 9-Speed · 12.3 kg
Offering an unprecedented combination of comfort, efficiency, and nimble handling, the Sirrus X excels on pavement, dirt, and any terrain in between. With bigger, confidence-inspiring tires, a slightly more upright riding position, and a super intuitive one-by drivetrain, the Sirrus X provides the smoothest ride in its class. Like all Specialized performance bikes, the geometry of each frame is uniquely crafted using their Rider-First Engineered™ philosophy — each tube size is specifically selected to achieve the optimal balance of rigidity, weight, and responsiveness, ensuring that no matter what size you're riding, you experience the world's best ride. Class-leading light weight, exceptional pedaling efficiency, and steering precision merge for confident, nearly telepathic handling characteristics.
Lightweight A1 Alloy Frame (3.5 lb / 1.7 kg)
Lightweight A1 Premium Aluminum frame with clean internal cable routing — Specialized's mid-tier aluminum at just 3.5 lb (1.7 kg) for the frame alone keeps the bike responsive on climbs and easy to maneuver in technical terrain. The internal cable routing keeps shift and brake lines tucked inside the frame for a clean look and protection from the elements.
Rider-First Engineered™ Geometry
Each frame size uses its own unique 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 performance bikes.
Hi-Ten Steel Fork
Hi-Ten steel fork with flat-mount disc and Plug + Play fender mounts plus low-rider rack mounts — durable, repairable steel construction that absorbs more vibration than aluminum, with the rack and fender mounts ready for commuting and wet-weather use.
Wide 700x40c Pathfinder Tires with GRIPTON® Compound
Float over rough terrain with fast-rolling Specialized Pathfinder 40c tires featuring proprietary GRIPTON® rubber compound — provides confident traction on chunky gravel and smooth efficiency on pavement, with a tread design that bridges the gap between road slick and gravel knob without compromise.
Shimano CUES 1x9 Drivetrain
Maximum control through intuitive shifting with 1x9 wide-range gearing and an 11-46T Shimano CUES cassette — single chainring up front simplifies shifting, reduces weight, and cuts maintenance compared to a double or triple crankset, while the 11-46T range covers steep climbs and fast descents without compromise.
Tektro Hydraulic Disc Brakes
Powerful Tektro 2-piston hydraulic disc brakes deliver reliable, consistent stopping power on pavement and loose surfaces — confident modulation for technical descents, predictable lever feel in wet weather, and the durability needed for daily commuting and all-season training miles.
Slightly Upright Riding Position
Slightly more upright riding position than a road bike — takes pressure off the lower back, neck, and wrists for long commutes and weekend rides, while still being aggressive enough for efficient fitness riding and confident gravel-road handling.
Square-Taper Bottom Bracket
BSA square-taper bottom bracket — the workhorse standard for fitness and commuter bikes, easy to service anywhere in the world with basic tools, and compatible with a massive range of aftermarket cranksets if you ever want to upgrade.
Optical Gear Display Shifter
Shimano CUES 9-Speed shifter with Optical Gear Display — shows the selected gear at a glance so you always know where you are in the cassette range, helpful for newer riders building shifting intuition and experienced riders who don't want to look down at the cassette.
Plug + Play Fender/Rack Compatibility
Frame and fork feature Plug + Play rack and fender mounts — ready to bolt on fenders for wet-weather commuting or a rack for groceries and gear without aftermarket bracket work, making the Sirrus X 2.0 a true do-everything fitness/gravel hybrid.
Frameset
Frame
Specialized A1 Premium Aluminum, Fitness Geometry, butted tubing, internal cable routing, flat-mount disc, quick-release, Plug + Play rack/fender mounts — 3.5 lb (1.7 kg)
Fork
Hi-Ten steel, flat-mount disc, Plug + Play fender mounts, low rider rack mounts, quick-release
Brakes
Front Brake
Tektro 2-piston hydraulic disc
Rear Brake
Tektro 2-piston hydraulic disc
Drivetrain
Rear Derailleur
Shimano CUES 9-Speed
Shift Levers
Shimano CUES 9-Speed with Optical Gear Display
Cassette
Shimano CUES CS-LG300-9, 9-Speed, 11-46T
Chain
KMC eGlide for 11-Speed CUES
Crankset
Prowheel Alloy, XXS–XS: 165mm / S–M: 170mm / L–XL: 175mm, 42T
Chainrings
Narrow-Wide Steel 42T
Bottom Bracket
BSA, square-taper, 68mm
Wheels & Tires
Rims
700C disc, double-wall alloy, 22mm depth, 21mm internal width, 32h
Front Hub
Alloy, 6-bolt disc, loose ball bearing, quick-release, 32h
Rear Hub
Alloy, 6-bolt disc, 8-/9-speed freehub, loose ball bearing, quick-release, 32h
Spokes
Stainless, 14g
Front Tire
Pathfinder Wirebead Fast Gravel 700x40C with proprietary GRIPTON® rubber compound
Rear Tire
Pathfinder Wirebead Fast Gravel 700x40C with proprietary GRIPTON® rubber compound
Inner Tubes
Standard 40mm SV 700x32-50
Cockpit
Handlebars
Alloy Mini Rise, 9-degree backsweep, 15mm rise, 31.8mm
Stem
3D-forged alloy, 31.8mm, 7-degree rise
Grip
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 platform
Weight
Weight
12.3 kg (27 lb, 1.9 oz) — size LG
Product Info
Product ID
263364
Sizes Available
XXS, XS, S, M, L, XL (6 sizes)
Fit Notes
Rider-First Engineered™ Sizing
Each frame size uses its own unique tube sizing — guarantees that every rider, regardless of frame size, gets the same world-class ride quality that Specialized builds into their performance 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. The Sirrus X 2.0 shares its frame geometry with the Sirrus X 3.0 — the only differences between the two are fork material, drivetrain, and weight.
Component Sizing
Crank Length
XXS/XS: 165mm · S/M: 170mm · L/XL: 175mm
Handlebar Width
680mm (all sizes)
Stem Length
XXS/XS: 60mm · S: 70mm · M: 80mm · L: 90mm · XL: 100mm
Saddle Width
XXS/XS/S: 155mm · M/L/XL: 143mm
Seatpost Length
XXS/XS/S: 300mm · M/L: 350mm · XL: 400mm
Cockpit Geometry
Stack (mm)
XXS: 536 · XS: 555 · S: 563 · M: 593 · L: 608 · XL: 633
Reach (mm)
XXS: 373 · XS: 388 · S: 393 · M: 398 · L: 402 · XL: 414
Head-Tube Length (mm)
XXS: 121 · XS: 139 · S: 147 · M: 175 · L: 191 · XL: 217
Head-Tube Angle
XXS: 69.5° · XS/S: 70° · M/L/XL: 71°
Frame Geometry
Seat-Tube Length (mm)
XXS: 360 · XS: 395 · S: 440 · M: 470 · L: 510 · XL: 530
Seat-Tube Angle
73.5° (all sizes)
BB Drop
70mm (all sizes)
BB Height
288mm (all sizes)
Chain-Stay Length
440mm (all sizes)
Front-Center (mm)
XXS: 606 · XS: 623 · S: 631 · M: 636 · L: 645 · XL: 665
Wheelbase (mm)
XXS: 1036 · XS: 1053 · S: 1061 · M: 1067 · L: 1076 · XL: 1096
Top-Tube Length (horizontal, mm)
XXS: 532 · XS: 552 · S: 560 · M: 574 · L: 582 · XL: 602
Bike Stand-Over Height (mm)
XXS: 702 · XS: 725 · S: 755 · M: 785 · L: 815 · XL: 837
Fork Geometry
Fork Length (full)
395mm (all sizes)
Fork Rake/Offset
51mm (all sizes)
Trail (mm)
XXS: 79 · XS/S: 76 · M/L/XL: 69
Quick Reference — All Sizes Side-by-Side
XXS
Stack 536 · Reach 373 · HTA 69.5° · STA 73.5° · WB 1036 · ST 360
XS
Stack 555 · Reach 388 · HTA 70° · STA 73.5° · WB 1053 · ST 395
S
Stack 563 · Reach 393 · HTA 70° · STA 73.5° · WB 1061 · ST 440
M
Stack 593 · Reach 398 · HTA 71° · STA 73.5° · WB 1067 · ST 470
L
Stack 608 · Reach 402 · HTA 71° · STA 73.5° · WB 1076 · ST 510
XL
Stack 633 · Reach 414 · HTA 71° · STA 73.5° · WB 1096 · ST 530
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.
