Specialized Sirrus X 4.0 2026 - Hybrid Sports Bike
The Specialized Sirrus X 4.0 combines speed, control, and comfort. Its lightweight alloy frame, carbon fork, and Future Shock technology deliver a smooth, efficient ride that’s perfect for fitness, commuting, and exploring.
Key Features:
- Frame: A1 SL Premium Aluminium, Fitness Geometry with internal cable routing
- Fork: FACT 9r Carbon fork with Future Shock 1.5 suspension
- Drivetrain: Shimano CUES 1x11-speed drivetrain
- Brakes: Shimano MT200 hydraulic disc brakes
- Wheels: 700c double-wall alloy rims
- Tyres: Pathfinder 700x40c fast-rolling gravel tyres
- Feature: Rider-First Engineered™ frame for consistent performance
- Finance: Available with 0% APR finance
The Specialized Sirrus X 4.0 is built to make every ride smoother, faster, and more enjoyable — whether you’re getting fit, riding to work, or heading out on weekend adventures. Combining road bike efficiency with the versatility of a hybrid, it’s a perfect match for riders who value comfort, performance, and control.
The A1 SL Premium Aluminium frame is light, responsive, and designed with Fitness Geometry, offering a slightly more upright riding position for comfort without losing speed. Every frame size is individually tuned using Rider-First Engineered™ design, ensuring the same precise handling and balance for every rider, no matter their height.
At the front, the FACT 9r carbon fork and Future Shock 1.5 system provide 20mm of vertical compliance, helping absorb rough surfaces, cobbles, and potholes — keeping your hands, arms, and shoulders more relaxed for longer rides.
The Shimano CUES 1x11 drivetrain delivers simple, reliable shifting with a wide gear range, while the Shimano MT200 hydraulic disc brakes give consistent stopping power in all weather conditions. The Pathfinder 700x40c tyres roll quickly on tarmac but offer extra grip on light gravel and cycle paths, adding versatility without slowing you down.
Practical touches like Plug + Play mounts for mudguards and racks make the Sirrus X easy to adapt for commuting or touring. The overall build is around 0.8kg lighter than the Sirrus 3.0, making it one of the lightest, smoothest-riding flat-bar fitness bikes in its class.
If you’re after a fast, comfortable hybrid that handles mixed surfaces with ease, the Specialized Sirrus X 4.0 is designed to do it all — efficient on the road, confident off it, and smooth wherever you ride.
Occasionally, without notice, manufacturers change product design and/or specifications.
| Frame | Specialized A1SL Premium Aluminum, Fitness Geometry, butted tubing, internal cable routing, flat-mount disc, quick-release, 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 |
| Stem | Future Stem, Comp |
| Bars | Alloy Mini Rise, 9-degree backsweep, 15mm rise, 31.8mm |
| Front Brake | Shimano BR-MT200, hydraulic disc, 160mm |
| Rear Brake | Shimano BR-MT200, hydraulic disc, 160mm |
| Brake Lever | Shimano BR-MT200 |
| Rear Mech | Shimano Cues 11-speed w/ Shadow Plus |
| Shifters | Shimano Cues SL-U6000, 11-Speed |
| Speed | 11 |
| 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 Tyre | Pathfinder Wirebead Fast Gravel 700X40C |
| Rear Tyre | Pathfinder Wirebead Fast Gravel 700X40C |
| Seat Post | Alloy, 2-bolt, 14mm offset, 27.2mm |
| Saddle | Body Geometry Power Sport, steel rails |
| Chainset | Prowheel Alloy, XXS - XS: 165mm, S - M: 170mm, L - XL: 175mm |
| Bottom Bracket | Threaded BSA 68mm, 24mm spindle |
| Chain | KMC eGlide for 11-Speed Cues |
| Cassette | Shimano, CS-LG400-11, Cues, 11-Speed, 11-50T |
| Pedals | Specialized, platform |
Specialized Sirrus Size Chart
| Frame Size | Height (cm) | Height (in) |
| XXS | 142 - 150 | 4' 8" - 4' 11" |
| XS | 150 - 158 | 4' 11" - 5' 2" |
| S | 155 - 165 | 5' 1" - 5' 5" |
| M | 165 - 175 | 5' 5" - 5' 9" |
| L | 175 - 183 | 5' 9" - 6' 0" |
| XL | 183 - 193 | 6' 0" - 6' 4" |
| XXL | 193 - 198 | 6' 4" - 6' 6" |
What size frame do I need if I am between sizes? - read here
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Specialized Sirrus X 4.0 2026 - Hybrid Sports Bike
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