Product Info
Details + Specs
Tarmac SL8 Expert - Shimano Ultegra Di2
Made to race
Nothing is faster than the Tarmac SL8 — a combination of aerodynamics, low weight, and ride quality previously thought impossible. After eight generations and over two decades of development, it's more than the fastest Tarmac ever: it's the world's fastest race bike.
Best for: Road racing, fast group rides and performance-focused training.
At a glance
Frame
Tarmac SL8 FACT 10r Carbon, Rider First Engineered™, threaded BB (68mm…
Drivetrain
Shimano Ultegra Di2 RD-R8150, 12-speed
Cockpit
Specialized Expert Shallow Drop, alloy, 125mm drop x 75mm reach
Weight
approx. 7.20kg (15lb 13oz), size 56
Fork
FACT 10r Carbon, 12x100mm thru-axle, flat-mount disc
Brakes (Front/Rear)
Shimano Ultegra Di2 R8170, hydraulic disc, 160mm/140mm rotors
Key highlights
the Speed Sniffer nose cone and the narrowest aero seatpost Specialized has ever made keep the leading edge of the bike aerodynamically clean, on what's still our most…
shares its Rider First Engineered™ geometry and ride quality with the rest of the SL8 range, in a genuinely lightweight, race-ready chassis.
12-speed electronic shifting with a wide-range 11-30t cassette and hydraulic disc brakes for confident, consistent stopping power.
tubeless-ready carbon race wheels paired with S-Works Turbo tyres for speed without sacrificing everyday reliability.
Complete specification
Full build details
Components are grouped by bike system so the complete build is easy to scan.
Frameset
Frame
Tarmac SL8 FACT 10r Carbon, Rider First Engineered™, threaded BB (68mm BSA), 12x142mm thru-axle, flat-mount disc (approx. 780g, size 56)
Suspension
Fork
FACT 10r Carbon, 12x100mm thru-axle, flat-mount disc
Brakes
Brakes (Front/Rear)
Shimano Ultegra Di2 R8170, hydraulic disc, 160mm/140mm rotors
Drivetrain
Shift Levers
Shimano Ultegra Di2 R8170
Rear Derailleur
Shimano Ultegra Di2 RD-R8150, 12-speed
Cassette
Shimano Ultegra, 12-speed, 11-30t
Chain
Shimano Ultegra, 12-speed
Crankset
Shimano Ultegra R8100, 52/36t
Bottom Bracket
Shimano, threaded BSA
Wheels and tyres
Wheels (Front/Rear)
Roval C38, 21mm internal width carbon rim, tubeless ready
Tyres
S-Works Turbo, 700x26c, folding bead
Cockpit and contact points
Handlebars
Specialized Expert Shallow Drop, alloy, 125mm drop x 75mm reach
Stem
Tarmac integrated stem, 6-degree
Bar Tape
Supacaz Super Sticky Kush
Seatpost
S-Works Tarmac SL8 Carbon, FACT Carbon, 15mm offset
Saddle
Body Geometry Power Expert
Weight and sizing
Weight
approx. 7.20kg (15lb 13oz), size 56
Weight is based on a production painted bike in the stated reference size. Actual weight can vary with colour, size and component variation. Specifications are subject to change without notice.