Specialized 2026 Tarmac SL8 Expert -ult DI2

Nothing is faster than the Tarmac SL8 thanks to a combination of aerodynamics, lightweight, 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. Your legs up for it?
Aerodynamics or lightweight alone don't win races - speed is what matters. Delivering that speed requires creating an uncompromising combination of aerodynamics, lightweight, stiffness, and compliance. Through race simulations using real world data our Ride Science team knows the Tarmac SL8 is the fastest race bike ever made on the routes that matter - 16.6 seconds faster over 40km, 128 seconds faster over Milan San Remo, 20 seconds faster over the legendary Tourmalet climb.
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
Suspension
Fork
FACT 10r Carbon, 12x100mm thru-axle, flat-mount disc
Brakes
Front Brake
Shimano Ultegra Hydraulic Brake
Rear Brake
Shimano Ultegra Hydraulic Brake
Drivetrain
Bottom Bracket
Shimano Threaded BSA BB
Rear Derailleur
Shimano Ultegra Di2 R8150, 12-speed
Crankset
Shimano Ultegra R81000
Front Derailleur
Shimano Ultegra R8150, braze-on
Shift Levers
Shimano Ultegra R8170, hydraulic disc
Cassette
Shimano Ultegra, 12-speed, 11-30t
Chain
Shimano XT M8100, 12-speed w/ quick link
Wheels & tires
Front Wheel
Roval C38, 21mm internal width carbon rim
Rear Wheel
Roval C38, 21mm internal width carbon rim
Front Tire
S-Works Turbo, 120 TPI, folding bead, BlackBelt protection, 700x26mm
Rear Tire
S-Works Turbo, 120 TPI, folding bead, BlackBelt protection, 700x26mm
Inner Tubes
Turbo Ultralight, 48mm Presta valve
Cockpit
Saddle
Body Geometry Power Expert
SeatPost
S-Works Tarmac SL8 Carbon seat post, FACT Carbon, 15mm offset
Handlebars
Specialized Expert Shallow Drop, alloy, 125mm drop x 75mm reach
Tape
Supacaz Super Sticky Kush
Stem
Tarmac integrated stem, 6-degree
Seat Binder
Tarmac integrated wedge
Accessories
Headset
Stem headset spacers kit for SL7 stem & Roval Rapide cockpit use
Product details
Product ID 221577
Weight
Weight Size 56
Weight 7.18 kg (15 lb, 13.3 oz)