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Specialized S-Works Crux Dura-Ace Di2 Cyclocross Bike 2019


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Product ID: 891822

The S-Works Crux is Specialized's flagship cyclocross bike - a pure race machine that has been engineered from the top down in order to provide unparalleled racing performance, without compromise.

Boasting a premium level FACT 11r frameset, and Dura-Ace and XTR Di2 components, as well as a lightweight and aerodynamic set of ROVAL CLX50 wheels, this bike is born ready for the race circuit.

Why buy your bike from Sigma Sports?

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Built, Checked, Tuned and Tested

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.

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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.

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Specialized S-Works Crux Dura-Ace Di2 Cyclocross Bike 2019

In the last few years, it has become de rigueur for new bikes to try and cover a number of different riding styles. Gravel bikes designed for taking on adventures both on the tarmac and off it, with perhaps a bit of bikepacking thrown in - or road bikes fitted with suspension systems, designed for mixing it up on Roubaix cobbles. The Specialized S-Works Crux Di2 is no such bike, but is designed for one thing only - the cut and thrust of cyclocross racing.

At the heart of this bike is a frameset constructed from FACT 11r carbon fibre - one of the highest carbon grades that Specialized works with. Both lightweight and remarkably stiff, this frameset provides a rock solid basis for your efforts. Designed with Specialized's Rider-First Engineered™ technology, you are guaranteed the same responsive ride and razor-sharp handling across the entire range, no matter what frame size you need. The frame is also thru-axle specific, adding another touch of stiffness to the system to help ensure that every watt you produce is transmitted into speed.

Shifting is provided for by a mixture of a Shimano Dura-Ace and XTR components, with the Di2 system guaranteeing the slick and seamless user experience that electronic setups are renowned for. The hydraulic disc brakes, meanwhile, mean that you can ride with the increased confidence of powerful and instant stopping power - essential for negotiating that technical CX course at speed. The bike also comes supplied with S-Works Power Cranks, providing you with single-sided power data to give you a fantastic insight into your racing performance.

The S-Works Crux is rolling on a set of Roval CLX50 wheels - a lightweight, carbon fibre option that provides outstanding race advantages out on the course. The bike is rounded out with a FACT carbon seatpost, a Body Geometry saddle, and CX Pro Gel bar tape.


  • FACT 11r carbon fibre frameset provides a stiff and lightweight chassis
  • Di2 setup provides slick and effortless shifting
  • Roval CLX50 wheelset is a premium, race-ready option
  • Rider-First Engineered™ technology provides superb ride quality and handling across every frame size.

Technical Specification

FRAME Specialized S-Works FACT 11r carbon, Rider-First Engineered™, OSBB, 1-3/8" lower bearing, 12x142mm thru-axle, flat-mount disc
FORK Specialized S-Works FACT 11r carbon, 12x100mm thru-axle
FRONT WHEEL Roval CLX 50 Disc, carbon, tubeless-ready, Win Tunnel Engineered, 50mm depth, CeramicSpeed bearings, 21h
REAR WHEEL Roval CLX 50 Disc, carbon, tubeless-ready, Win Tunnel Engineered, 50mm depth, DT Swiss 240 internals, CeramicSpeed bearings, 24h
INNER TUBES Presta Valve, 60mm
FRONT TYRE SpecializedTracer Pro, 2Bliss Ready, 700x33mm
REAR TYRE Specialized Tracer Pro, 2Bliss Ready, 700x33mm
CRANKSET Specialized S-Works Power Cranks, single-sided power, BB30, 11-speed
CHAINRINGS Praxis Wave Tech, 110 BCD, 42T
BOTTOM BRACKET OSBB, CeramicSpeed bearings
SHIFT LEVERS Shimano Dura-Ace Di2 ST-R9170 shift levers
REAR DERAILLEUR Shimano XTR M9050 Di2, Shadow Plus, GS cage, 11-speed
CASSETTE Shimano Ultegra, 11-speed, 11-32t
CHAIN Shimano Dura-Ace, 11-speed
FRONT BRAKE Shimano Dura-Ace, hydraulic disc
REAR BRAKE Shimano Dura-Ace, hydraulic disc
HANDLEBAR S-Works Shallow Bend Carbon, 125mm drop x 75 mm reach
TAPE Specialized CX Pro Gel
STEM Specialized S-Works SL, alloy, titanium bolts, 6-degree rise
SADDLE Specialized Body Geometry S-Works Phenom, carbon rails, 143mm
SEATPOST Specialized S-Works FACT carbon 27.2mm, 20mm offset
SEAT BINDER Included with frame
PEDALS Nylon, 105x78x28mm, loose ball with reflectors

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. 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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