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.
Save up to 47% with any one of our 11 Cycle to Work partners, and get the health benefits of a new bike in exchange for tax free salary sacrifice. To find out more about our various partners and how to apply click here.
Choose between Free Bike Delivery - to your home or place of work - or our new Premier Bike Delivery Service £99.99 and have your bike delivered "ready to ride" and set up to your measurements with seatpost and pedals adjusted on arrival by a qualified bike mechanic. Either way, our Customer Care team will be in touch to arrange a delivery date to suit you.
We've partnered with Laka to offer you 30 days free bike Insurance on your new bike purchase over £400. Click here for more info and find out how to 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. For hassle-free home delivery and bike set-up from a qualified mechanic use our Premier Delivery Service.
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. We do not install accessories to bikes, including mudguards. Bikes ordered for delivery that have tubeless compatible tyres and rims will arrive with inner tubes installed or with tubeless valves installed, this will be brand dependent. Sealant is available to be purchased separately.
If you require any assistance please contact our Customer Care team.
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