2025 Specialized S-Works Tarmac SL8 Frameset 54cm

This listing is for a 2025 Specialized S-Works Tarmac SL8 Frameset (54cm).

The Tarmac SL8 represents the most advanced evolution of Specialized’s race platform, blending aerodynamics, reduced weight, and refined ride quality into one uncompromising chassis. Through extensive real-world race simulation and wind tunnel development, the SL8 delivers measurable speed gains where it matters most.

With a claimed 685g FACT 12r carbon frame, threaded bottom bracket, and fully integrated routing, this frameset is the foundation for a world-class race build.

Key Features

• S-Works FACT 12r Carbon frame

• Rider-First Engineered™ for consistent ride quality across sizes

• Win Tunnel engineered aerodynamic shaping

• New “Speed Sniffer” head tube design for reduced drag

• Threaded 68mm bottom bracket

• 12x142mm rear thru-axle

• Flat-mount disc brake compatibility

• 32mm tire clearance

• Clean internal cable routing

Specifications

• Frame Size: 54cm

• Frame Weight: 685g (claimed)

• Frame: S-Works Tarmac SL8 FACT 12r Carbon

• Bottom Bracket: 68mm threaded

• Brake Mount: Flat mount disc

• Rear Axle: 12x142mm thru-axle

• Fork: S-Works FACT 12r Carbon, 12x100mm thru-axle

• Seatpost: S-Works Tarmac SL8 Carbon, 15mm offset w/ integrated wedge

• Claimed Frameset Weight: 1.41 kg (reference size 56cm)

Compatibility

• Electronic or mechanical drivetrains (build dependent)

• Flat-mount disc brake systems

• 700c road wheels

• Up to 32mm tire clearance

In the Box

• S-Works Tarmac SL8 carbon frame (54cm)

• S-Works FACT 12r carbon fork

• S-Works SL8 carbon seatpost (15mm offset)

• Integrated seatpost wedge

No drivetrain, cockpit, wheels, or brakes included. Frameset only.

Why It Matters

The Tarmac SL8 isn’t just lighter or more aerodynamic — it’s faster across real-world race scenarios. By combining Aethos-inspired weight savings with advanced aerodynamic refinement and improved stiffness-to-weight, the SL8 becomes the ultimate starting point for a no-compromise race build.