Specialized Sirrus X 4.0 2025 - Hybrid Sports Bike
The Specialized Sirrus X 4.0 is the perfect hybrid for riders who want speed, comfort, and adventure-ready performance. Whether you're commuting, training, or hitting mixed surfaces, this bike is built for smooth efficiency and confident handling.
Key Features:
- Frame: A1 SL Premium aluminium, fitness geometry, internal cable routing, rack and mudguard mounts.
- Fork: FACT 9r carbon with Future Shock 1.5, 20mm compliance, and Plug + Play mounts.
- Drivetrain: Shimano Cues 11-speed with Shadow RD-U6000 rear mech.
- Brakes: Tektro HD-R510 hydraulic disc brakes, 160mm rotors.
- Wheels: 700c alloy double-wall rims, sealed cartridge bearings.
- Tyres: Pathfinder Sport 700x38mm for grip and smooth rolling.
- Future Shock 1.5: Reduces road vibrations for a smoother, more comfortable ride.
- Finance: Available with 0% APR finance.
At the heart of the Sirrus X 4.0 is an A1 SL Premium aluminium frame, delivering a lightweight yet strong build. The FACT 9r carbon fork not only reduces weight but also enhances steering precision and road-smoothing comfort. Specialized’s Future Shock 1.5 system adds 20mm of front-end compliance, helping to absorb bumps, rough roads, and gravel tracks, so you ride with less fatigue and more control.
The Shimano Cues 11-speed drivetrain provides precise and reliable shifting, while the 1x setup simplifies gear changes, reducing weight and maintenance. Paired with a wide-range 11-50T cassette, this bike offers the gearing range needed for both steep climbs and fast descents.
For reliable stopping power, Tektro HD-R510 hydraulic disc brakes with 160mm rotors ensure consistent braking in all weather conditions, perfect for urban riding and weekend explorations alike. The 700x38mm Pathfinder Sport tyres balance speed, grip, and durability, making them ideal for city streets, gravel paths, and light off-road riding.
Designed for maximum versatility, the Sirrus X 4.0 comes with rack and mudguard mounts, making it commuter and touring-ready. The Specialized Body Geometry saddle and ergonomic handlebars ensure all-day comfort, whether you're riding for fitness or adventure.
Occasionally, without notice, manufacturers change product design and/or specifications.
| Frame | Specialized A1 SL Premium Aluminum, Fitness Geometry, fully manipulated butted tubing, internal cable routing, flat-mount disc, 12x142mm thru-axle, 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 | Tektro HD-R510, hydraulic disc, 160mm |
| Rear Brake | Tektro HD-R510, hydraulic disc, 160mm |
| Rear Mech | Shimano Cues Shadow RD-U6000, 11-Speed |
| Shifters | Shimano Cues SL-U6000, 11-Speed |
| Speed | 11 |
| Rims | 700C disc, double-wall alloy, 22mm depth, 21mm internal width, 32h |
| Front Hub | Alloy, Center lock Disc, High-Low Flange, Sealed Cartridge Bearing, 24H, 12mm Axle, 100mm Spacing |
| Rear Hub | Alloy, Center lock Disc, High-Low Flange, Sealed Cartridge Bearing, 32H, 12mm Axle, 142mm Spacing |
| Spokes | Stainless, 14g |
| Front Tyre | Pathfinder Sport, 700x38 |
| Rear Tyre | Pathfinder Sport, 700x38 |
| Seat Post | Alloy, 2-bolt, 14mm offset, 27.2mm |
| Saddle | Power Comp, Hollow Cr-mo rails, 155/143mm |
| Chainset | PROWHEEL, Alloy, 165mm. 34T |
| Bottom Bracket | Threaded BSA 68mm, 24mm spindle |
| Chain | KMC eGlide for 9-Speed Cues |
| Cassette | Shimano, CS-LG400-11, Cues, 11-Speed, 11-50T |
| Pedals | Specialized Body Geometry Fitness, platform, plastic |
| Weight | 10.64kg (size L) |
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 2025 - Hybrid Sports Bike
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