S-Works Roubaix SL8 Frameset

The S-Works Roubaix SL8 Frameset brings Specialized's flagship endurance road platform down to its purest form: a frame-only option for riders who want to build their own spec around the brand's smoothest-riding road chassis. At the heart of the design is Future Shock 3.0, an inline suspension unit housed between the headset and stem that gives roughly 20mm of stiction-free travel no matter where the rider's hands sit on the bars, keeping the front end settled and predictable when the road surface turns rough.

Working alongside the Future Shock is Specialized's AfterShock system: a dropped seatpost clamp that exposes more usable seatpost length, paired with the dedicated S-Works Pavé post, to fine-tune vertical give at the saddle without sacrificing pedalling stiffness through the rear triangle. Specialized's own ride-science testing credits this combination with roughly halving bar and saddle impacts compared with rival endurance frames. Endurance-tuned geometry keeps the rider tucked into the bike rather than perched on top of it, while tyre clearance up to 40mm and a full complement of bottle, top-tube and fender mounts mean this frameset is equally at home on long tarmac days or a foray onto light gravel.

At a Glance

• Frame: FACT 12R Carbon, Rider-First Engineered™, FreeFoil Shape Library tube profiles
• Model year: 2025
• Colourway: Gloss Carbon / Red To Gold And Solidity Dry Brushed / Dune White
• Fork: Future Shock 3.3 with Smooth Boot, FACT Carbon steerer, 12x100mm thru-axle, flat-mount disc
• Seatpost: S-Works Pavé seatpost with hidden drop clamp
• Tyre clearance: up to 40mm
• Mounts: three bottle mounts, top-tube mounts, fender-ready
• Sizes available: 49, 52, 54, 56 (frame only, not built up)

Technical Specifications

Geometry (mm / degrees)

Note: sizes 44, 58 and 61 are shown above for reference only (Specialized's full Roubaix SL8 geometry range) — this dealer listing offers the frameset in sizes 49, 52, 54 and 56 only.

Weight: 2.11kg (4lb 10.4oz) as listed by Specialized for this frameset, size 56. Actual weight will vary by size.

Sizes and fit

Available in frame sizes 49, 52, 54 and 56. Endurance-tuned geometry; tyre clearance up to 40mm.

Colours

Available in Gloss Carbon / Red To Gold And Solidity Dry Brushed / Dune White.

Materials and construction

• Frame: FACT 12R Carbon, Rider First Engineered™ (RFE), FreeFoil Shape Library tube profiles, threaded BB, 12x142mm thru-axle, flat-mount disc
• Fork: Future Shock 3.3 with Smooth Boot, FACT Carbon steerer, 12x100mm thru-axle, flat-mount disc
• Front suspension: inline Future Shock unit between headset and stem, giving roughly 20mm of stiction-free travel
• AfterShock dropped seatpost clamp, paired with the dedicated S-Works Pavé seatpost; seat binder is a hidden drop clamp
• Tyre clearance up to 40mm
• Mounts: three bottle mounts, top-tube mounts, fender-ready
• Model year 2025
• Stated weight 2.11kg (4lb 10.4oz) for the frameset in size 56; actual weight will vary by size
• Supplied frame only, not built up