Description
Specialized Crux Comp Gravel Bike 2026
The Specialized Crux Comp is the world’s lightest gravel bike, combining huge tyre clearance with performance gravel geometry. Built for speed, versatility and control, it delivers the ultimate expression of gravel performance.
Specialized Crux lightweight design
With frame weights of just 725 g for the S-Works 12r and 825 g for the 10r, the Crux applies the breakthroughs of the Aethos to gravel. The result is a bike that climbs with ease, floats over rough terrain and weighs less than a full bottle in the cage.
Specialized Crux with capable clearance
Clearance for 47c tyres or 650b x 2.1” means the Crux matches the capability of the Diverge, opening the door to more adventurous routes at full gas.
Responsive ride
Nimble, supple and reactive, the Crux is sharp at the pedals and smooth in the saddle. Its performance gravel geometry and race-inspired fit carry forward the heritage of Crux cyclocross racing into a modern gravel bike. Equipped with a Shimano GRX 12 speed groupset, DT G540 Disc wheels and 2Bliss Ready 700x40 mm Pathfinder tyres for reliable shifting, strength and traction across challenging terrain.
Technical Specification
| Frame | Crux FACT 10r Carbon, Rider First Engineered, threaded BB, 12x142 mm thru axle, flat mount disc, UDH dropout |
| Fork | S-Works FACT Carbon, 12x100 mm thru axle, flat mount disc |
| Front brake | Shimano GRX RX820 |
| Rear brake | Shimano GRX RX820 |
| Crankset | Shimano GRX RX820, 40T |
| Rear derailleur | Shimano GRX RX822-GS, 12 speed |
| Bottom bracket | Shimano threaded BSA |
| Chain | Shimano XT M8100, 12 speed with quick link |
| Cassette | Shimano XT, 12 speed, 10-45T |
| Shift levers | Shimano GRX ST-RX820 |
| Front wheel | DT Swiss G540 rim, 24 mm internal width, tubeless ready, 24h, Specialized full sealed bearing thru axle hub, centre lock disc, DT Swiss Champion 14G stainless steel spokes, DT Swiss brass nipples |
| Rear wheel | DT Swiss G540 rim, 24 mm internal width, tubeless ready, 24h, Specialized full sealed bearing thru axle hub, centre lock disc, DT Swiss Champion 14G stainless steel spokes, DT Swiss brass nipples |
| Front tyre | Pathfinder, 700x40, tubeless ready |
| Rear tyre | Pathfinder, 700x40, tubeless ready |
| Inner tubes | Presta, 700x32-50 mm |
| Stem | 3D forged alloy, 31.8 mm, 7 degree rise |
| Saddle | Body Geometry Power Sport, steel rails |
| Seatpost | Roval Terra Carbon, 20 mm offset |
| Handlebars | Specialized Adventure Gear, 118.9 mm drop x 70 mm reach x 12° flare |
| Seat binder | Specialized alloy, 30 mm |
| Handlebar tape | Supacaz Super Sticky Kush |
| Claimed Weight | 8.66 kg (19 lb 1.5 oz) |
| Weight size | 56 |
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.
Size Guide
Specialized Crux Comp Gravel Bike 2026 Sizing
Delivery & Returns
Reviews
Unable to display Reviews due to Privacy Settings.
Adjust your Cookie Preferences to Opt-in "YES" to "Functional Cookies".
Q&A
Unable to display Q&A due to Privacy Settings.
Adjust your Cookie Preferences to Opt-in "YES" to "Functional Cookies".
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 42% 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.