The Specialized Tarmac SL8 Comp is designed for those who want only one thing: to be faster—everywhere. After eight generations of development and more than twenty years of World Tour racing experience, this bike is not just another evolution of the Tarmac, but the purest expression of what it means to ride fast on the road. Extreme aerodynamics, featherlight weight, and refined ride quality come together in a single project designed to turn every watt into real speed—from city circuits to the great mountain classics.
The work of the Specialized Ride Science team is clear: the Tarmac SL8 is the fastest road bike on any terrain, capable of helping you gain precious seconds on flats, climbs, and long race efforts. The frame design applies aerodynamics only where it truly matters, with a sculpted front end that cuts through the air and an ultra-slim seatpost that efficiently channels airflow generated by the legs toward the rear of the bike.
At the same time, lessons learned from the Aethos project allow for the elimination of every unnecessary gram, resulting in an incredibly lightweight frame without compromising stiffness or precision. On the road, the Tarmac SL8 Comp delivers an intuitive and balanced ride: stiff where it matters for sprinting and descending control, yet compliant enough to filter vibrations and keep you fresh during long, demanding efforts.
The proven geometry, tire clearance up to 32 mm, and a design free from gender-specific distinctions make this bike a pure performance tool, built for anyone who wants to push beyond their limits.
SPECIALIZED TARMAC SL8 COMP SHIMANO 105 DI2 – KEY FEATURES:
- Tarmac SL8 frame in next-generation carbon fiber, engineered to be the fastest road bike on any terrain.
- Advanced aerodynamics with optimized front end and recessed fork crown to significantly reduce air resistance.
- Extremely narrow and aerodynamic seatpost, designed using updated UCI regulations to improve airflow around the legs.
- Construction inspired by the Aethos project to eliminate unnecessary material and maximize weight savings.
- Improved stiffness-to-weight ratio by 33% compared to the Tarmac SL7 for immediate power response.
- Enhanced comfort with 6% better vibration absorption compared to the previous generation.
- Proven Tarmac geometry, precise and stable in the most demanding situations, ideal for racing and high-intensity rides.
- Generous tire clearance up to 32 mm for increased grip and comfort when needed.
- Unisex high-performance platform: the same top-level racing capability for every rider.
- Perfect platform for high-end racing builds with electronic groupsets and carbon wheels.
TECHNICAL SPECIFICATIONS
-
Frame
- Structure: Tarmac SL8 FACT 10r Carbon, Rider First Engineered™, Win Tunnel Engineered
- Cable routing: Internal (Clean Routing)
- Bottom bracket: BSA threaded
- Rear axle: 12x142 mm thru-axle
-
Fork
- Material: FACT 10r Carbon
- Axle: 12x100 mm thru-axle
- Brake mount: Flat-mount disc
-
Brakes
- Front: Shimano 105 hydraulic disc brake
- Rear: Shimano 105 hydraulic disc brake
-
Drivetrain
- Shifters: Shimano 105 Di2 R7170, 12-speed
- Rear derailleur: Shimano 105 Di2 R7150
- Front derailleur: Shimano 105 R7170
- Crankset: Shimano 105 R7100 52/36
- Cassette: Shimano 105 CS-R7100 11-34, 12-speed
- Chain: Shimano SLX CN-M7100 12-speed
- Bottom bracket: Shimano BSA threaded
-
Wheels
- Rims: DT Swiss R470, 20 mm internal width, tubeless ready
- Hubs: Specialized sealed bearing hubs, Centerlock
- Spokes: DT Swiss Champion 14G stainless steel
- Front tire: S-Works Turbo 700x26
- Rear tire: S-Works Turbo 700x26
- Inner tubes: Turbo Ultralight Presta 48 mm
-
Cockpit
- Handlebar: Specialized Shallow Drop 6061, 31.8 mm
- Stem: Integrated Tarmac stem, -6°
- Bar tape: Supacaz Super Sticky Kush
-
Saddle & Seatpost
- Saddle: Body Geometry Power Sport
- Seatpost: S-Works Tarmac SL8 Carbon, 15 mm offset
-
Accessories
- Headset: Spacer kit compatible with SL7 / Roval Rapide cockpit
-
Weight
- Size 56: 7.68 kg
The Specialized Tarmac SL8 Comp is designed for those who want only one thing: to be faster—everywhere. After eight generations of development and more than twenty years of World Tour racing experience, this bike is not just another evolution of the Tarmac, but the purest expression of what it means to ride fast on the road. Extreme aerodynamics, featherlight weight, and refined ride quality come together in a single project designed to turn every watt into real speed—from city circuits to the great mountain classics.
The work of the Specialized Ride Science team is clear: the Tarmac SL8 is the fastest road bike on any terrain, capable of helping you gain precious seconds on flats, climbs, and long race efforts. The frame design applies aerodynamics only where it truly matters, with a sculpted front end that cuts through the air and an ultra-slim seatpost that efficiently channels airflow generated by the legs toward the rear of the bike.
At the same time, lessons learned from the Aethos project allow for the elimination of every unnecessary gram, resulting in an incredibly lightweight frame without compromising stiffness or precision. On the road, the Tarmac SL8 Comp delivers an intuitive and balanced ride: stiff where it matters for sprinting and descending control, yet compliant enough to filter vibrations and keep you fresh during long, demanding efforts.
The proven geometry, tire clearance up to 32 mm, and a design free from gender-specific distinctions make this bike a pure performance tool, built for anyone who wants to push beyond their limits.
SPECIALIZED TARMAC SL8 COMP SHIMANO 105 DI2 – KEY FEATURES:
- Tarmac SL8 frame in next-generation carbon fiber, engineered to be the fastest road bike on any terrain.
- Advanced aerodynamics with optimized front end and recessed fork crown to significantly reduce air resistance.
- Extremely narrow and aerodynamic seatpost, designed using updated UCI regulations to improve airflow around the legs.
- Construction inspired by the Aethos project to eliminate unnecessary material and maximize weight savings.
- Improved stiffness-to-weight ratio by 33% compared to the Tarmac SL7 for immediate power response.
- Enhanced comfort with 6% better vibration absorption compared to the previous generation.
- Proven Tarmac geometry, precise and stable in the most demanding situations, ideal for racing and high-intensity rides.
- Generous tire clearance up to 32 mm for increased grip and comfort when needed.
- Unisex high-performance platform: the same top-level racing capability for every rider.
- Perfect platform for high-end racing builds with electronic groupsets and carbon wheels.
TECHNICAL SPECIFICATIONS
-
Frame
- Structure: Tarmac SL8 FACT 10r Carbon, Rider First Engineered™, Win Tunnel Engineered
- Cable routing: Internal (Clean Routing)
- Bottom bracket: BSA threaded
- Rear axle: 12x142 mm thru-axle
-
Fork
- Material: FACT 10r Carbon
- Axle: 12x100 mm thru-axle
- Brake mount: Flat-mount disc
-
Brakes
- Front: Shimano 105 hydraulic disc brake
- Rear: Shimano 105 hydraulic disc brake
-
Drivetrain
- Shifters: Shimano 105 Di2 R7170, 12-speed
- Rear derailleur: Shimano 105 Di2 R7150
- Front derailleur: Shimano 105 R7170
- Crankset: Shimano 105 R7100 52/36
- Cassette: Shimano 105 CS-R7100 11-34, 12-speed
- Chain: Shimano SLX CN-M7100 12-speed
- Bottom bracket: Shimano BSA threaded
-
Wheels
- Rims: DT Swiss R470, 20 mm internal width, tubeless ready
- Hubs: Specialized sealed bearing hubs, Centerlock
- Spokes: DT Swiss Champion 14G stainless steel
- Front tire: S-Works Turbo 700x26
- Rear tire: S-Works Turbo 700x26
- Inner tubes: Turbo Ultralight Presta 48 mm
-
Cockpit
- Handlebar: Specialized Shallow Drop 6061, 31.8 mm
- Stem: Integrated Tarmac stem, -6°
- Bar tape: Supacaz Super Sticky Kush
-
Saddle & Seatpost
- Saddle: Body Geometry Power Sport
- Seatpost: S-Works Tarmac SL8 Carbon, 15 mm offset
-
Accessories
- Headset: Spacer kit compatible with SL7 / Roval Rapide cockpit
-
Weight
- Size 56: 7.68 kg
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