SPECIALIZED S-WORKS TARMAC SL8 - SHIMANO DURA-ACE Di2 2025

The Tarmac SL8 isn’t just the fastest Tarmac ever; it’s the world’s fastest race bike—period. After eight generations and over two decades of relentless development, we’ve crafted a machine that redefines speed. With a perfect combination of aerodynamics, lightweight, and ride quality previously thought impossible, the Tarmac SL8 will have you asking, “Are my legs ready for this?”

The Speed Formula: Aerodynamics + Lightweight + Stiffness

Speed doesn’t come from aerodynamics or lightweight alone. It’s the uncompromising combination of aero efficiency, lightweight construction, stiffness, and compliance that wins races. Our Ride Science team used real-world data and race simulations to prove that the Tarmac SL8 is faster than any race bike ever made on the courses that matter. Whether it's 16.6 seconds faster over 40km, 128 seconds faster over Milan-San Remo, or 20 seconds faster up the legendary Tourmalet climb, the numbers don’t lie.

Frame S-Works Tarmac SL8 FACT 12r Carbon, Rider First Engineered™, Win Tunnel Engineered, Clean Routing, Threaded BB, 12x142mm thru-axle, flat-mount disc

Fork S-Works FACT 12r Carbon, 12x100mm thru-axle, flat-mount disc

Crankset Shimano Dura-Ace R9200, HollowTech II, 12-speed with 4iiii Precision 3+ Pro dual-sided powermeter

Chain Shimano Dura-Ace, 12-speed

Cassette Shimano Dura-Ace, 12-speed, 11-30t

Shift Levers Shimano Dura-Ace R9270, hydraulic disc

Front Derailleur Shimano Dura-Ace R9250, braze-on

Rear Derailleur Shimano Dura-Ace R9250, 12-speed

Front Brake Shimano Dura-Ace R9270, hydraulic disc

Rear Brake Shimano Dura-Ace R9270, hydraulic disc

Front Wheel Roval Rapide CLX II, Tubeless, 21mm internal width carbon rim, 51mm depth, Win Tunnel Engineered, Roval AFD hub, 18h, DT Swiss Aerolite spokes

Rear Wheel Roval Rapide CLX II, Tubeless, 21mm internal width carbon rim, 60mm depth, Win Tunnel Engineered, Roval AFD hub, 24h, DT Swiss Aerolite spokes

Front Tyre S-Works Turbo Rapidair 2BR, 700x26mm

Rear Tyre S-Works Turbo Rapidair 2BR, 700x26mm

Handlebars Roval Rapide Cockpit, Integrated Bar/Stem

Saddle Body Geometry S-Works Power with Mirror, carbon fiber rails, carbon fiber base

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

Seat Binder Tarmac integrated wedge

Inner Tubes Turbo Ultralight, 60mm Front, 80mm Rear, Presta valve

Chain Rings 52/36T

Bottom Bracket Shimano Dura-Ace, BB-R9200

Stem Roval Rapide Cockpit, Integrated Bar/Stem

Tape Supacaz Super Sticky Kush