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Product Details

Great condition approved used bike with some cosmetic marks to the cranks, rear derailleur, top tube and handlebars. Spec has been upgraded from new to include a Roval 1 piece bar and stem, Rapide wheels, and a Power pro Mirror saddle

Specialized Tarmac SL8 Expert Ultegra Di2 Road Bike 2026

The Specialized Tarmac SL8 is the fastest road bike in the world, bringing together aerodynamics, lightweight construction and exceptional ride quality in a way previously thought impossible. After eight generations and more than twenty years of refinement, it is built to deliver pure speed.

Specialized Aerodynamics

Aerodynamics are focused where they matter most, at the leading edge. The new Speed Sniffer nose cone sharpens the head tube for reduced drag, while a redesigned seatpost uses updated UCI rules to optimise airflow around the rider’s legs. The result is Specialized’s most aerodynamic road bike ever, even faster than the Venge.

Tarmac lightweight construction

Drawing inspiration from the Aethos, the Tarmac SL8 achieves a frame weight of just 685 g, making it 15 percent lighter than the Tarmac SL7 and the lightest aero frame on the World Tour. Its efficient load-bearing design reduces the need for excess carbon layers, ensuring strength while minimising weight.

Specialized Tarmac Ride quality

With a 33 percent improvement in stiffness-to-weight over the SL7, the Tarmac SL8 offers sharper handling and greater precision at the bars, while increased compliance ensures all-day comfort. Rider-First Engineering guarantees the same exceptional performance across all sizes, and 32 mm tyre clearance provides added versatility.

Designed to deliver equal performance benefits to every rider, the Tarmac SL8 moves beyond gender-specific bikes to create one platform that works for all.

The Tarmac SL8 Expert Di2 is equipped with a Shimano Ultegra Di2 groupset for smooth electronic shifting, C38 carbon tubeless ready wheels, and an SL7 stem paired with Specialized Expert Shallow Drop alloy handlebars, delivering uncompromising performance in an accessible build.

 

  • Certified Quality & Peace of Mind
    Every bike is meticulously inspected to the highest safety standards and comes with a one-year warranty*, ensuring reliability and performance you can trust.
  • Premium Bikes, Lower Prices
    Own a high-end bike for less – get access to top-tier brands and models at a fraction of the cost, making performance cycling more affordable.
  • Sustainable & Eco-Friendly Choice
    Choosing a pre-owned bike helps reduce waste and extends the life of quality bicycles, making it a greener way to ride.
  • Hassle-Free Trade-In & Upgrade
    Easily part-exchange your old bike for an upgrade, making it simple to switch, save, and keep riding the best bike for your needs

Approved Used Warranty Information

 

Features
  • Frame: Specialized Tarmac SL8 FACT 10r Carbon, size 54cm, 2025
  • Fork: FACT 10r Carbon Fork
  • Stem: Roval One Piece Carbon Bar/Stem, 100mm
  • Handlebar: Roval One Piece Carbon Bar/Stem, 40cm
  • Levers/Shifters: Shimano Ultegra, BR-R8170 Hydraulic, 160mm rotor
  • Front Derailleur: Shimano Ultegra, FD-R8150, 2x12 speed, braze on
  • Rear Derailleur: Shimano Ultegra, RD-R8150, 12 speed
  • Cassette: Shimano Ultegra, CS-R8101, 11-30T 12 speed
  • Crankset: Shimano Ultegra, FC-R8100, 2x 52-36T, 172.5mm cranks
  • Wheels: Roval Rapide Carbon TLR, 50mm deep rim, DT Swiss 350 Hub
  • Tyres: S-Works Turbo, 700x26c, inner tubes
  • Saddle: S-Works Power Pro Mirror, 143mm, Hollow Ti rails
  • Seatpost: S-Works Tarmac Carbon Seatpost
  • Pedals: Available to be purchased separately
Specifications
Model
Tarmac SL8 Expert
Brakes [Kind]
Hydraulic Disc
Brakes [Maker]
Shimano
Brakes [Model]
BR-R8170
Cassette [Gearing]
11-30
Cassette [Maker]
Shimano
Cassette [Model]
CS-R8101
Chainring [Gearing]
52–36
Condition Grade
Fair
Crank [Maker]
Shimano
Crank [Model]
FC-R8100
E-Bike
No
F Hub [Maker]
DT Swiss
F Hub [Model]
350
Family
Tarmac
FD [Maker]
Shimano
FD [Model]
FD-R8150
Fenders Mounts
No
Fork [Brake Type]
Disc
Fork [Maker]
Specialized
Fork [Material]
Carbon
Fork [Model]
Fact 10r Carbon Fork
Fork [Wheel Size]
700c
Frame [Material]
Carbon
Frameset
No
Gearing [Configuration]
2x
Gearing [Kind]
Conventional
Gender
Unisex
Handlebar [Kind]
Drop
Handlebar [Maker]
Roval
Handlebar [Material]
Carbon
Handlebar [Shape]
Drop bar
R Hub [Maker]
DT Swiss
R Hub [Model]
350
Rack Mounts
No
RD [Maker]
Shimano
RD [Model]
RD-R8150
Saddle [3D Printed]
Yes
Saddle [Maker]
Specialized
Seatpost [Maker]
Specialized
Seatpost [Material]
Carbon
Shifters [Maker]
Shimano
Shifters [Model]
BR-R8170
Shifting
Electronic
Stem [Maker]
Roval
Stem [Material]
Carbon
Suspension Configuration
Rigid
Tires [Maker]
Specialized
Wheels [Configuration]
Front+Rear
Wheels [Kinds]
Tubeless Ready
Wheelset [Maker]
Roval
Wheelset [Material]
Carbon
Wheelset [Model]
Rapide
Size Guide
SMLXL
A380410455480
B570595627660
C----
D75.3°75°74.6°74.2°
E----
F65.5°65.5°65.5°65.5°
G105110140155
H432432432432
I1157117912121243
Specialized S-Works Stumpjumper (650b) Mountain Bikes Size Guide

If you fall between sizes, we recommend experienced riders selecting a smaller frame which will offer faster handling. A larger bicycle offers more stability.

Should you have any specific questions, please contact us for information and talk to one of our experienced members of staff.

A: Seat Tube (CTR-TOP)

B: Horizontal Top Tube

C: Actual Top Tube

D: Actual Seat Angle

E: Effective Seat Angle

F: Head Angle

G: Head Tube

H: Chainstay

I: Wheelbase

* All measurements in mm unless otherwise stated

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Shipping & Returns

Free UK delivery on orders over £50. Orders are dispatched within 1-2 working days and typically arrive 1-2 working days later.

Return unused items in their original packaging within 30 days of delivery. Return postage is £3.50.

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About Specialized

Innovate or die.

Founded in California in 1974, Specialized began with a simple promise: serious riders deserve serious gear. Half a century later, the brand still funds its own wind tunnel, builds its own carbon, and tests every bike with the world's best so that you ride your own best.

The first production mountain bike. The first cycling-specific shoes. FACT carbon, the Win Tunnel, S-Works. Specialized has a habit of building the things the rest of cycling ends up copying.