Product Info
Details + Specs
Model Summary
The Crux is the lightest gravel bike in the world, with the exceptional capability of massive tyre clearance and performance gravel geometry. It's not just the ultimate expression of gravel performance, it's your one-way ticket to gravel enlightenment. This S-Works Crux Frameset pairs the flagship FACT 12r Carbon frame — the lightest gravel frame in the world — with a matching S-Works FACT Carbon fork, ready to be built into your dream race machine.
Key Highlights
- The world's lightest gravel frame: FACT 12r Carbon with a claimed weight of just 725 grams (size 56), applying the breakthroughs that made the Aethos the lightest bike ever.
- Massive tyre clearance: fits up to 700x47c or 650b x 2.1" tyres for Diverge-level capability off-road.
- Race-influenced performance geometry: nimble, supple, and responsive handling drawn from Crux's iconic cyclocross heritage.
- Ultra-light complete frameset: frame and matching S-Works FACT Carbon fork combine to just over a kilogram (fork claimed at 350g).
- Threaded BSA bottom bracket and internal routing: compatible with both mechanical and electronic drivetrains.
Technical Specifications
- Frame: S-Works Crux FACT 12r Carbon, Rider First Engineered™, threaded BB, 12mm thru-axle, flat-mount disc
- Fork: S-Works FACT Carbon, 12x100mm thru-axle, flat-mount disc (included)
- Headset: Tapered, 1-1/8" to 1-1/2", bearings and carbon top cap included
- Bottom Bracket: Threaded BSA 68
- Seatpost: Integrated wedge-style seat collar, 27.2mm
- Maximum Tyre Clearance: 700x47c or 650b x 2.1"
- Frame Weight: 725g claimed (size 56)
- Fork Weight: 350g claimed
- Available Sizes: 49, 52, 54, 56, 58cm