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.
We've partnered with PedalSure to offer you 30-DAYS FREE bike insurance on new bikes over £400. Visit our Cycle Insurance page to learn more and claim.
Specialized Sirrus Alloy Disc Hybrid Bike 2018
The Specialized Sirrus Alloy Disc Hybrid Bike is a capable machine that can tackle commutes and leisure rides with style.
The A1 SL premium aluminium frame material is lightweight enough to make riding a pleasure, but also robust enough to ensure this bike will provide years of cycling pleasure. The fitness geometry prioritises rider comfort over anything else, delivering a bike you can ride for hours.
Promax F1 hydraulic disc brakes are perhaps the stand-out feature of this bike, and provide the kind of stopping power you would expect to find on models with a far higher price tag.
The Shimano Altus gearing offers a reliable shifting experience, with a handy indicator on the shifters to show you which gear you're using. The triple chainset makes sure you have enough gears to pedal easily up any incline you might meet.
- Specialized A1 SL premium aluminium frame with fitness geometry
- Promax F1 hydraulic disc brakes
- Reliable Shimano drivetrain components
- Rugged and ready for daily use
|FRAME||Specialized A1 SL Premium Aluminum, Fitness Geometry, fully-manipulated butted tubing, internal cable routing, flat mount disc, QR, rack and Plug + Play mudguard mounts|
|FORK||Steel, flat mount disc, 1-1/8" steerer, QR, rack and Plug + Play mudguard mounts|
|STEM||Specialized, 7-degree, 31.8mm clamp|
|HANDLEBARS||Specialized double butted alloy, 9-degree backsweep, 31.8mm|
|FRONT BRAKE||Promax F1, hydraulic disc, flat mount, 160mm rotor|
|REAR BRAKE||Promax F1, hydraulic disc, flat mount, 140mm rotor|
|FRONT DERAILLEUR||Shimano Tourney, top swing, 31.8mm clamp|
|REAR DERAILLEUR||Shimano Altus, 8-Speed|
|SHIFT LEVERS||Shimano Altus, RapidFire Plus with gear display|
|CASSETTE||Shimano Altus, 8-speed, 11-32t|
|CRANKSET||Shimano Tourney, 3-piece, 48/38/28T steel chainrings|
|FRONT WHEEL||Specialized 700C disc, double wall rims, stainless 14 gram spokes, 6-bolt disc alloy 32-hole hub with loose ball bearing, QR|
|REAR WHEEL||Specialized 700C disc, double wall rims, stainless 14 gram spokes, 6-bolt disc alloy 32-hole 8/9-speed freehub with loose ball bearing, QR|
|FRONT TYRE||Specialized Nimbus Reflect 700x32mm, 26 TPI, wire bead, with Flak Jacket protection|
|REAR TYRE||Specialized Nimbus Reflect 700x32mm, 26 TPI, wire bead, with Flak Jacket protection|
|SADDLE||Specialized Canopy Sport, steel rails, 155mm|
|SEATPOST||Specialized alloy, 12mm offset, 2-bolt clamp, 27.2mm|
|CHAIN||KMC X8, 8-speed with Missing Link™|
|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 specified), 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. We do not install accessories to bikes, including mudguards.