The Specialized Tarmac SL8 Comp 105 Di2 Road Bike is built to be the fastest road bike in the world, combining cutting-edge aerodynamics, lightweight carbon engineering, stiffness, and ride quality that redefines performance. After eight generations and over 20 years of innovation, the SL8 is more than just the best Tarmac ever, it’s a race-winning aero road bike designed for speed, precision, and endurance.
- Advanced Carbon Frame: Ultra-light 685g Tarmac SL8 carbon frameset, 15% lighter than the SL7, engineered for pro-level aerodynamics and responsiveness.
- Aerodynamic Design: Featuring the revolutionary Speed Sniffer nose cone and Specialized’s narrowest, most aerodynamic seatpost for maximum drag reduction.
- Shimano 105 Di2 Electronic Drivetrain: Smooth, reliable, and precise electronic shifting for everyday riders and racers alike.
- DT R470 Tubeless-Ready Wheels: Durable, efficient, and performance-driven, optimized for speed and comfort with tubeless compatibility.
- Specialized SL7 Stem & Shallow Drop Alloy Handlebars: Confident handling and race-ready control.
- Stiffness-to-Weight Ratio: 33% improvement over the SL7 for explosive power transfer and precise handling.
- Comfort Meets Speed: 6% more compliance in the saddle than the SL7, smoothing rough terrain while maintaining aggressive race geometry.
- 32mm Tyre Clearance: Extra versatility for endurance riding, racing, or training with wider tyres.
- Rider-First Engineering: Delivers the same world-class handling and ride quality across all frame sizes.
- Beyond Gender Design: Engineered for all riders, ensuring every cyclist experiences the full advantage of Tarmac performance.
Performance Benefits
- Proven Speed Gains: 16.6 seconds faster over 40km, 128 seconds quicker across Milan-San Remo, and 20 seconds faster on the legendary Tourmalet climb.
- World Tour-Proven Geometry: Trusted by champions, refined for maximum efficiency and rider adaptability.
- Lightweight Aero Balance: Inspired by the Specialized Aethos, delivering World Tour-level weight savings without compromising stiffness or aerodynamics.
The Specialized Tarmac SL8 Comp 105 Di2 Road Bike is the perfect choice for riders who demand elite race-bike performance with accessible value. Combining a world-class carbon aero frame with Shimano’s 105 Di2 electronic shifting and tubeless-ready wheels, the Tarmac SL8 Comp is an unbeatable balance of speed, handling, comfort, and technology.
The Specialized Tarmac SL8 Comp 105 Di2 is a lightweight carbon road bike, Shimano 105 Di2 electronic groupset, DT R470 wheels, Rider-First engineered, aero race geometry.













