Why buy your bike from Sigma Sports?
Don't hesitate to reach out to us. It's our goal to answer all of your questions and offer the best advice from our experts. We’ll be happy to answer any questions you may have. Contact us now or visit us in-store.
All our bikes are fully built by our Cytech qualified mechanics. To find out more, see the Built, Checked, Tuned and Tested section below to see how we'll deliver your bike.
We offer FREE DELIVERY of your bike to your home or place of work. Once you've placed your order, our Customer Care team will be in contact to offer a convenient delivery date of your choice.
Cyclescheme can save you up to 39% on a bike and accessories. Visit our Cycle to Work Scheme page to learn more and claim.
Specialized Sirrus X 4.0 Disc Hybrid Bike 2021
The Specialized Sirrus X 4.0 Disc Hybrid Bike offers versatility and performance for the weekday commuter and weekend explorer alike. A lightweight aluminium frame and carbon monocoque fork provide a comfortable and efficient chassis, with the innovative Future Shock 1.5 providing 20mm of suspension at the top of the steerer to soak up potholes and bumps.
Shimano’s 11-speed Deore groupset is the epitome of reliability and ease of use, offering quick, positive shifts between the ratios whilst the matching hydraulic disc brakes add confidence and powerful control. The large, 700c wheels make light work of road miles, with the 38mm Specialized Pathfinder Sport tyres giving enough grip and cushioning for off-road excursions onto gravel trails.
Highlights
- A1 Premium Aluminium frame with mudguard and rack mounts
- Carbon Monocoque fork
- Specialized Future Shock 1.5 suspension
- Shimano 11-speed Deore groupset
- Shimano BR-MT200 hydraulic disc brakes
- 38mm wide Specialized Pathfinder Sport tyres
Technical Specification
| Frame | Specialized A1 Premium Aluminium, Fitness Geometry, butted tubing, internal cable routing, flat-mount disc, 12x142mm thru-axle, Plug + Play rack/mudguard mounts |
| Fork | Specialized Carbon Monocoque, 12x100mm flat thru-axle, flat mount disc, Future Shock 1.5 |
| Bottom Bracket | Specialized threaded BSA 68mm |
| Stem | Specialized Future Stem, Comp |
| Handlebar | Specialized Stout Mini Rise, alloy, 9-degree backsweep, 15mm rise, 31.8mm |
| Grips | Specialized Neutralizer, Body Geometry, locking grip |
| Front Brake | Shimano BR-MT200, hydraulic disc, 160mm |
| Rear Brake | Shimano BR-MT200, hydraulic disc, 160mm |
| Brake Levers | Shimano BR-MT200, hydraulic disc |
| Rear Derailleur | Shimano Deore M5100, SGS, 11-speed |
| Shift Levers | Shimano Deore M5100, 11-speed |
| Chain | KMC X11, 11-speed with reusable Missing Link™ |
| Cassette | Shimano Deore, 11-speed, 11-42t |
| Crankset | Specialized forged aluminium arms, 2-piece, 24mm spindle, Narrow-wide aluminium chainring |
| Front Wheel | Specialized Alloy, Center Lock disc, high-low flange, sealed cartridge bearings, 12x100mm spacing, 24h hub with 700C disc, double-wall alloy, 22mm depth, 21mm internal width rim |
| Rear Wheel | Specialized Alloy, Center Lock disc, high-low flange, sealed cartridge bearings, 12x142mm spacing, 28h hub with 700C disc, double-wall alloy, 22mm depth, 21mm internal width rim |
| Front Tyre | Specialized Pathfinder Sport, 700x38 clincher |
| Rear Tyre | Specialized Pathfinder Sport, 700x38 clincher |
| Saddle | Specialized Bridge Comp, Hollow Cr-mo rails |
| Seatpost | Specialized alloy, 14mm offset, 2-bolt clamp, 27.2mm |
| Pedals | Specialized Body Geometry Fitness, platform, plastic |
Built, Checked, Tuned and Tested
All our bikes are fully built, checked, tuned and tested by our Cytech qualified mechanics and then securely packaged, ready for delivery. All you have to do is add the pedals (if included), attach the handlebars to the stem and tighten them following the included detailed instructions or by watching our video and using the provided FREE tools. Visit our Bike Assembly page to see how you assemble your new bike once you receive it.
All bikes collected from our shop, are built, tested and ready to ride.
Please note, occasionally, manufacturers may change the specification without notice. Bicycles do not come with pedals unless otherwise specified. Bikes ordered for delivery will not arrive with the pedals installed, please refer to the owners manual and pedal installation guides provided for guidance or contact Customer Care. We do not install accessories to bikes, including mudguards.