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.
Combining the heart of the world's best road bikes with a flat-bar, urban-friendly form, Sirrus redefines the notion of versatility. 24-speed Shimano gearing provides a wide gear range and reliable performance.
- Super light A1 Premium aluminium fully-manipulated frame offers a great ride and versatility with rack/mudguard mounts and wide tyre clearance
- Straight blade steel fork with mudguard mounts gives you all the durability you need to manage potholes and rough roads
- Sirrus double-wall alloy rims with machined sidewalls for strength and reliable braking; plus alloy, sealed cassette hub with stainless spokes
- Flak Jacket protection and a grooved tread make the Specialized Nimbus tyres perfect for city or open road use
- BodyGeometry Targa grips alleviate hand pain and tingling fingers for all-day riding comfort
- Specialized BodyGeometry Targa Sport saddle has front/rear bumpers for durability and ample padding for comfort
Frame: Specialized A1 Premium Aluminium, fully manipulated butted tubing, integrated lower bearing, mudguard/rack eyelets
Fork: Specialized Hi-Ten steel fork
Bottom Bracket: Cartridge bearing, square spindle w/ crank stop right side, capless bolts
Brakes: Die cast alloy, linear pull
Cassette: Shimano 8-speed, 11-32
Chain: KMC X-8, reusable Missing Link
Chainset: Shimano FC-M131 triple, 8-speed, w/ chainguard
Chainrings: 48/38/28, w/ chainguard
Front Derailleur: Shimano FDM-191, top-swing, dual-pull
Handlebar Tape: BodyGeometry Targa, dual compound
Handlebar: Specialized alloy flat bar, 25.4mm, 6-degree backsweep
Headset: 1-1/8" FSA integrated cartridge lower, external sealed upper bearing
Pedals: Nylon flat pedal
Rear Derailleur: Shimano Altus
Saddle: BodyGeometry Targa Sport, 155mm
Seatpost: Alloy, 2-bolt head, 27.2mm
Seat Binder: Alloy clamp, 31.8mm
Shifters: Shimano EF-51, EZ Fire
Stem: Melt-forged alloy, 4-bolt, 20-degree rise, 25.4mm clamp
Tyres: Specialized Nimbus w/ Flak Jacket, 26TPI, 700x32c
Tubes: Specialized Schrader valve
Wheels: Sirrus double-sealed
Technical Specification
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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