Specialized Tarmac SL8 Comp Bike (2026)

2026 Specialized Tarmac SL8 Comp Shimano 105 Di2 Road Bike, Black. Specialized Reference Number: 94926-5054

Nothing is faster than the Tarmac SL8. The reason? The combination we've achieved of aerodynamics, lightness, and a ride quality that until recently seemed impossible. Eight generations later and after more than two decades of development, it's not just the fastest Tarmac in history: it's also the fastest race bike in the world.

Races aren't won by aerodynamics or lightness alone: ​​it's speed that matters. And to achieve that, you have to create an uncompromising combination of aerodynamics, lightness, stiffness, and comfort. Our Ride Science team simulated races with real-world data and found the Tarmac SL8 to be the fastest road bike ever built on the biggest roads: 16.6 seconds faster over 40km, 128 seconds faster at Milano San Remo, and 20 seconds faster on the legendary Tourmalet climb.

• 100% AERO: We've placed aerodynamic elements where they're needed, not just where they look good. With the Speed ​​Sniffer, the Tarmac's new taper, clean air is optimized for maximum benefit. The Tarmac SL8 has the narrowest, most aerodynamic seatpost we've ever made, so air flows cleaner around your legs. Yes, faster than the Venge.
• MINIMUM WEIGHT, MAXIMUM AERODYNAMICS: Thanks to the lessons learned from the Aethos, the Tarmac SL8 meets minimum UCI requirements and offers a frame that weighs just 685g—15% lighter than the Tarmac SL7 and lighter than any other World Tour frame*. *Except the 585g Aethos used by Kasper Asgreen in the Tour de France.
• ROCKET-LIKE, RIDE-LIKE: With a 33% better stiffness-to-weight ratio than the SL7, it delivers legendary handling, aggressive response, and unprecedented comfort. Thanks to Rider-First Engineering, all riders enjoy the same level of control. Plus, it accepts tires up to 32mm.
• BEYOND GENDER: Specialized doesn't design bikes by gender, but by riders. The Tarmac SL8 is designed for everyone.
• The Tarmac SL8 Comp Shimano 105 Di2 delivers exceptional performance thanks to its full 105 Di2 12-speed groupset, tubeless-ready DT Swiss R470 wheels, and a Tarmac-integrated stem cockpit with Specialized Shallow Drop handlebars. A balanced, accessible bicycle with racing DNA.

Technical specifications

Frameset

• FRAME: Tarmac SL8 FACT 10r Carbon, Rider First Engineered™, Win Tunnel Engineered, Clean Routing, Threaded BB, 12x142mm thru-axle, flat-mount disc
• FORK: FACT 10r Carbon, 12x100mm thru-axle, flat-mount disc

Brakes

• FRONT BRAKE: Shimano 105 hydraulic disc
• REAR BRAKE: Shimano 105 hydraulic disk

Drivetrain

• GEAR CONTROLS: Shimano 105 Di2 R7170, 12 speeds
• DRAWER: Shimano 105 R7170, solder type
• GEAR: Shimano 105 Di2 7150, 12 speeds
• CASSETTE: Shimano 105, 12 speeds, 11-34T
• CHAIN: Shimano SLX M7100, 12 speeds
• CRANKS: Shimano 105, 12 speeds
• Bottom Bracket: Shimano BSA threaded

Wheels & Tires

• FRONT WHEEL: DT Swiss R470, 20mm internal, tubeless ready, 24h, Specialized sealed hub, centerlock, DT Swiss Champion 14G spokes, DT Swiss brass nipples
• REAR WHEEL: DT Swiss R470, 20mm internal, tubeless ready, 24h, Specialized sealed hub, centerlock, DT Swiss Champion 14G spokes, DT Swiss brass nipples
• FRONT TIRE: S-Works Turbo, 120 TPI, 700x26mm, BlackBelt protection
• REAR TIRE: S-Works Turbo, 120 TPI, 700x26mm, BlackBelt protection
• TUBES: Turbo Ultralight, 48 Presta valve mm

Cockpit

• POWER: Integrated Tarmac, 6°
• HANDLEBAR: Specialized Shallow Drop, 6061 aluminum, 70x125 mm, diameter 31.8 mm
• TAPE: Supacaz Super Sticky Kush
• SADDLE: Body Geometry Power Sport, steel rails
• SEATPOST: S-Works Tarmac SL8 FACT Carbon, 15mm offset
• CLOSURE: Tarmac integrated wedge

Accessories

• HEADSET: Spacer set for SL7 stem and Roval cockpit Rapide

Weight

• WEIGHT: 7.68 kg (size 56, with standard inner tubes)
• Weight limit: This bike has a maximum weight limit (bike + rider + cargo) of 125 kg.