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The Specialized Tarmac SL8 Road Bike is the fastest race bike in the world, combining unmatched aerodynamics, lightweight design, and exceptional ride quality.
The Specialized Tarmac SL8 Road Bike is the fastest race bike in the world, combining unmatched aerodynamics, lightweight design, and exceptional ride quality.
Specialized

2025 Specialized Tarmac SL8 Expert Ultegra Di2 Road Bike - Gloss White

£6,000.00
Pre-Order

With Pre-Order, you can purchase the latest items added to our store in advance of them arriving with us.

Your Pre-Order is prioritised (at no additional charge); meaning that as soon as the product arrives with us, we can wrap it straight back up; ready for collection via Click & Collect or despatch to you — it often never even hits the stock room shelves!

Pre-Launch

With Pre-Launch, the date when we expect to receive the product ourselves is still a little too hazy to be confident in accepting Pre-Orders.

So, instead, you can submit your email address against the item you are interested in and we will email you as soon as stock arrives on the system.

Estimated Delivery & Collection Dates

Estimated Delivery & Collection Dates are given on Pre-Order and Pre-Launch products. They are for indication purposes only and can change at any time without notice.

The dates we provide are based on indications given by our suppliers. Whenever we get updated information from our suppliers we will endeavour to update the Estimated Delivery & Collection Dates provided on product pages.

We estimate this will be ready for despatch to you or collection via Click & Collect on Undetermined

2025 Specialized Tarmac SL8 Expert Ultegra Di2 Road Bike - Gloss White

Season:2025

Brand:Specialized

Code:42762095440674

The Specialized Tarmac SL8 Road Bike is the fastest race bike in the world, combining unmatched aerodynamics, lightweight design, and exceptional ride quality. After eight generations and over two decades of innovation, the Tarmac SL8 is not just the fastest Tarmac ever, it’s the ultimate race bike.

Speed is more than just aerodynamics or lightweight construction; it’s the perfect balance of both, along with stiffness and compliance. The Tarmac SL8 achieves this with a race-proven design that’s 16.6 seconds faster over 40km, 128 seconds quicker at Milan-San Remo, and 20 seconds ahead on the legendary Tourmalet climb.

Aero where it counts. The Tarmac SL8 is Specialized's most aerodynamic road bike yet, surpassing even the Venge. With a new "Speed Sniffer" nose cone design, the Tarmac’s leading edge is optimised for minimal drag. The head tube is narrower, and the seat post is the most aero Specialized have ever made, ensuring smoother airflow around the legs for maximum speed.

Minimum weight, maximum aero. Drawing from the Aethos, the Tarmac SL8 is built to the UCI weight minimum, featuring a 685g frame that’s 15% lighter than the Tarmac SL7. This lightweight frame, combined with a full aero setup, delivers exceptional speed and performance. The design efficiently distributes load, making extra carbon layers unnecessary.

Unmatched ride quality. The Tarmac SL8 offers a 33% improvement in stiffness-to-weight over the SL7, enhancing handling, responsiveness, and comfort. Thanks to Rider-First Engineering, every size delivers consistent, superior ride quality. With 6% more compliance, the Tarmac SL8 glides smoothly over rough roads, maintaining the proven geometry and 32mm tyre clearance of the SL7 for easy adaptation.

Beyond gender. The Tarmac SL8 is designed for every rider, regardless of gender. Instead of creating male or female-specific bikes, Specialized focused on delivering optimal performance for all cyclists.

The Tarmac SL8 Expert Di2 delivers exceptional performance with a full Ultegra Di2 groupset, C38 carbon tubeless ready wheelset, and an SL7 stem with Specialized Expert Shallow Drop alloy handlebars makes for an accessible performance-packed bike.

Technical Information
  • 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
  • Cockpit Handlebars
    Specialized Expert Shallow Drop, alloy, 125mm drop x 75mm reach
  • Saddle
    Body Geometry Power Expert
  • Stem
    Tarmac integrated stem, 6-degree
  • Tape
    Supacaz Super Sticky Kush
  • Seatpost
    S-Works Tarmac SL8 Carbon seat post, FACT Carbon, 15mm offset
  • Seat Binder
    Tarmac integrated wedge
  • Front Brake
    Shimano Ultegra Di2 R8170, hydraulic disc
  • Rear Brake
    Shimano Ultegra Di2 R8170, hydraulic disc
  • Shift Levers
    Shimano Ultegra R8170, hydraulic disc
  • Front Derailleur
    Shimano Ultegra R8150, braze-on
  • Rear Derailleur
    Shimano Ultegra Di2 R8150, 12-speed
  • Cassette
    Shimano Ultegra, 12-speed, 11-30t
  • Crankset
    Shimano Ultegra R81000
  • Chainrings
    52/36T
  • Bottom Bracket
    Shimano Threaded BSA BB
  • Chain
    Shimano Ultegra, 12-speed
  • Front Wheel
    Roval C38, 21mm internal width carbon rim
  • Rear Wheel
    Roval C38, 21mm internal width carbon rim
  • Front Tire
    S-Works Turbo, folding bead, 700x26mm
  • Rear Tire
    S-Works Turbo, folding bead, 700x26mm
  • Inner Tubes
    Turbo Ultralight, 48mm Presta valve
  • Product ID
    276209
  • Weight
    7.20kg (15 lb, 14 oz)
  • Weight Size
    56cm
As with any product, specification is subject to change without prior notification. You are advised to confirm current specification before buying. Please note that this bike does not come with pedals.
Sizing Information
Size in ft4'8" - 5'1"5'1" - 5'4"5'4" - 5'7"5'7" - 5'9"5'9" - 5'11"5'11" - 6'2"6'2" - 6'5"
Size in cm142 - 155cm155 - 163cm163 - 170cm170 - 175cm175 - 180cm180 - 188cm188 - 196cm
Bike Size44495254565861

GEOMETRY

Size44cm49cm52cm54cm56cm58cm61cm
BB Drop74mm74mm74mm72mm72mm72mm72mm
BB Height266mm266mm266mm268mm268mm268mm268mm
Bike Standover Height723mm735mm746mm768mm786mm808mm834mm
Chainstay Length410mm410mm410mm410mm410mm410mm410mm
Fork Length, Full370mm370mm370mm370mm370mm370mm370mm
Fork Rake/Offset47mm47mm47mm44mm44mm44mm44mm
Front Centre572mm574mm577mm579mm592mm606mm613mm
Head Tube Angle70.5°71.75°72.5°73°73.5°73.5°74°
Head Tube Length99mm109mm120mm137mm157mm184mm204mm
Frame Reach366mm375mm380mm384mm395mm402mm408mm
Seat Tube Angle75.5°75.5°74°74°73.5°73.5°73°
Seat Tube Length433mm445mm456mm473mm494mm515mm545mm
Frame Stack501mm514mm527mm544mm565mm591mm612mm
Top Tube Length, Horizontal496mm509mm531mm541mm563mm577mm595mm
Trail71mm63mm58mm58mm55mm55mm52mm
Wheelbase970mm973mm975mm978mm991mm1006mm1013mm
Stack to Stem509mm522mm535mm552mm573mm599mm620mm
Reach to Stem363mm372mm377mm381mm393mm400mm406mm
Crank Length165mm165mm170mm172.5mm172.5mm175mm175mm
Handlebar Width360mm380mm400mm420mm420mm440mm440mm
Stem Length70mm80mm90mm100mm100mm110mm110mm
Saddle Width155mm155mm155mm143mm143mm143mm143mm
Seatpost Length300mm300mm300mm380mm380mm380mm380mm
Professional Opinion
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