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 Crux Comp Gravel Bike 2023
The Crux stands out as the world's lightest gravel bike, combining unparalleled lightweight construction with massive tire clearance and performance-oriented gravel geometry. It's not just a bike; it's your gateway to an elevated gravel riding experience. The Crux Comp model is equipped with a reliable SRAM Rival 1 hydraulic disc groupset, durable DT G540 Disc wheels, and grippy 700x38mm Pathfinder Pro tires, ensuring a smooth and confident ride over challenging terrain.
Its lightweight design, featuring 725g S-Works 12r and 825g 10r frames, incorporates groundbreaking Aethos innovations, resulting in a gravel bike that effortlessly conquers climbs and effortlessly glides over rough terrain, all while weighing less than a full water bottle in your cage. With its impressive 47c/650b x 2.1" tire clearance, the Crux delivers exceptional capability, comparable to the Diverge, enabling you to explore a wide range of terrains at full throttle. The Crux's nimble, supple, and responsive characteristics, along with a performance gravel geometry inspired by its rich history in 'cross racing, make it an ideal choice for those seeking an unparalleled gravel riding experience.
Technical Specification
| Frame | Crux FACT 10r Carbon, Rider First Engineered™, Threaded BB, 12x142mm thru-axle, flat-mount disc |
| Fork | FACT 12R Carbon, 12x100mm thru-axle, flat-mount disc |
| Stem | Specialized Alloy, 30mm |
| Saddle | Body Geometry Power Sport, steel rails |
| SeatPost | Roval Terra Carbon Seat Post, 20mm Offset |
| Seat Binder | Specialized Alloy, 30mm |
| Tape | Supacaz Super Sticky Kush |
| Handlebars | Specialized Adventure Gear, 118.9mm drop x 70mm reach x 12º flare |
| Front Brake | SRAM Rival, hydraulic disc |
| Rear Brake | SRAM Rival, hydraulic disc |
| Chain | KMC X11 Extra Lightweight, 11-speed |
| Shift Levers | SRAM Rival |
| Rear Derailleur | SRAM Rival 1, long cage |
| Crankset | SRAM Rival 1x |
| Chainrings | 40T |
| Cassette | SunRace, 11-speed, 11-42t |
| Bottom Bracket | SRAM GXP |
| Inner Tubes | 700x28/38mm, 48mm Presta valve |
| Rear Wheel | DT Swiss G540 rim, 24mm internal width, tubeless ready, 24h, Specialized full sealed bearing thru axle hub, centerlock disc, DT Swiss Champion 14G stainless steel spokes, DT Swiss brass nipples |
| Front Wheel | DT Swiss G540 rim, 24mm internal width, tubeless ready, 24h, Specialized full sealed bearing thru axle hub, centerlock disc, DT Swiss Champion 14G stainless steel spokes, DT Swiss brass nipples |
| Rear Tire | Pathfinder Pro 2BR, 700x38 |
| Front Tire | Pathfinder Pro 2BR, 700x38 |
| Weight Size | 56 |
| Weight | 8.73kg (19 lb, 3.9 oz) |
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.
Specialized Crux Comp Gravel Bike 2024 Sizing
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