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 Roubaix SL4 Pro Disc Race Di2 Road Bike 2015
Imagine going into a car showroom and picking every added extra and gizmo to put on your car, well the bike equivalent of this is the Specialized Roubaix SL4 Pro Disc Race Di2 Road Bike 2015. A bike laden with the electronic Ultegra 6870 Di2 groupset and the latest in braking technology, the Shimano 785 hydraulic disc brake system. Ideal for fast sportives and long miles in the saddle. The Roubaix was developed for the tough cobbles of northern France and is more than up to the task of delivering a comfortable engaging ride, through its 10r FACT carbon fibre frameset, which features Zertz dampening inserts.
The lightweight FACT 10r carbon fibre has been used in the frame construction to make a frame incredibly stiff yet also dampens the road buzz.
Endurance Road Geometry sets this bike apart from the rest of Specialized’s road bike range. Giving a more relaxed position, ideal for epic 100 mile sportives but still feeling direct and lively enough if you want to sprint over a climb or push it hard around a hairpin corner.
Specialized’s fantastic Zertz system dampens rough roads and is used in the seatstays and fork, providing a smooth ride. This is the same shock absorption technology used on Boonen’s race bike.
Disc brakes are taking the road bike world by storm and Shimano's 785 hydraulic discs with Ice Tech resin pads are some of the best out there. Providing assured, power braking, whatever the weather.
Roval Rapide CL 40 SCS Disc wheels are light, responsive and designed specifically for disc brake setups. These are paired with Specialized Turbo Pro tyres that offer comfort, grip and puncture protection.
Electronic groupsets need less adjustment, wear slower and offer better shifting than their mechanical counterparts. The Shimano Ultegra 6870 Di2 11-speed drivetrain is ready for whatever gradient you put in it's way and is more than up to the task of getting you over even the steepest of climbs. This double chainring setup, paired with a wide 11-28 sprocket cassette, provides pin-sharp shifting and a smooth, reliable ride.
The finishing kit comes straight from Specialized, with a stiff and durable Expert level handlebar and Pro level stem, both lightweight and shaped perfectly for an ergonomic ride. Specialized have also added their Pro FACT carbon crankset and a single bolt, Specialized CG-R, FACT carbon seatpost, which gives the rider an armchair ride, however, rough the road is.
The final touch of a Specialized Body Geometry Toupé Expert Gel saddle is a comfortable, stylish and supportive one. This offers a nice contrast against the gloss white colour scheme.
Features
- Roval Rapide CL 40 full carbon clincher wheelset is light, stiff, and aero
- Specialized Turbo Pro tyres deliver low rolling resistance with superior cornering traction
- Specialized Pro FACT carbon crankset with OSBB delivers unparalleled stiffness-to-weight ratio
- Shimano 785, hydraulic disc brakes provide reliable, consistent stopping power
- Shimano Ultegra Di2, 11-speed rear derailleur offers precise and smooth shifting
- Body Geometry Toupé Expert Gel saddle ensures blood flow to sensitive areas
- Lightweight and efficient, FACT carbon CG-R seatpost with Zertz vibration damping
Image shown for representation of colour way only, specification subject to change at any time. Bicycles do not come with pedals unless otherwise specified.
Technical Specification
FRAME | Specialized SL4 FACT 10r carbon, FACT construction, tapered/shaped 1-1/8" to size-specific lower headtube, compact race design, Zertz, internal cable routing, carbon OSBB |
FORK | Specialized FACT carbon, size-specific taper |
HEADSET | 1-1/8" upper, size specific lower, stainless steel cartridge bearings, 20mm carbon cone spacer, w/ 20mm of carbon spacers |
STEM | Specialized Pro SL, alloy, 4-bolt |
HANDLEBARS | Specialized Expert, shallow drop, 2014 alloy, 123mm drop, 75mm reach |
TAPE | Specialized CX Pro, w/ sticky gel |
FRONT BRAKE | Shimano 785, hydraulic disc, Ice Tech resin pads w/ fins |
REAR BRAKE | Shimano 785, hydraulic disc, Ice Tech resin pads w/ fins |
FRONT DERAILLEUR | Shimano Ultegra 6870 Di2, 11-speed, braze-on |
REAR DERAILLEUR | Shimano Ultegra 6870 Di2, 11-speed, long cage |
SHIFT LEVERS | Shimano 785 Di2, 11-speed |
CASSETTE | Shimano Ultegra 6800, 11-speed, 11-28 |
CHAIN | Shimano Ultegra 6800, 11-speed |
CRANKSET | Specialized Pro FACT carbon, OSBB |
PEDALS | Nylon flat test ride, loose-ball, w/ reflectors |
FRONT WHEEL | Roval Rapide CL 40 SCS Disc |
REAR WHEEL | Roval Rapide CL 40 SCS Disc |
FRONT TYRE | Specialized Turbo Pro, 127TPI, folding bead, BlackBelt protection, 700x25c |
REAR TYRE | Specialized Turbo Pro, 127TPI, folding bead, BlackBelt protection, 700x25c |
INNER TUBES | Ultralight, presta valve |
SADDLE | Specialized Body Geometry Toupé Expert Gel, hollow Ti rails, 143mm |
SEATPOST | Specialized CG-R, FACT carbon, single bolt, 27.2mm |
SEAT BINDER | Alloy, Ti bolt, 32.6mm |
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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