2026 Specialized Tarmac SL8 Comp Road Bike - Shimano 105 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.

Specification

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

Wheels

DT Swiss R470 rim, 20mm internal width, tubeless ready, 24h, Specialized full sealed bearing thru axle hub, centerlock disc, DT Swiss Champion 14G stainless steel spokes, DT Swiss brass nipples.

Tires

S-Works Turbo, 120 TPI, folding bead, BlackBelt protection, 700x26mm

Bottom Bracket

Shimano Threaded BSA BB

Crankset

Shimano 105, 12-speed

Shifters

Shimano 105 Di2 R7170, 12-speed

Front Derailleur

Shimano 105 R7170, braze-on

Rear Derailleur

Shimano 105 Di2 7150

Cassette/Freewheel

Shimano 105, 12-speed, 11-34t

Chain

Shimano SLX, M7100, 12-speed

Brakes

Shimano 105 Hydraulic Brake

Handlebars

Specialized Shallow Drop, 6061, 70x125mm, 31.8mm clamp

Tape/Grips

Supacaz Super Sticky Kush

Stem

Tarmac integrated stem, 6-degree

Headset

Stem headset spacers kit for SL7 stem & Roval Rapide cockpit use

Seatpost

S-Works Tarmac SL8 Carbon seat post, FACT Carbon, 15mm offset

Pedals

Sold Separately

Saddle

Body Geometry Power Sport, steel rails