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The Specialized Tarmac SL8 Road Bike is the fastest on the market, combining unparalleled aerodynamics, lightweight design, and exceptional ride quality.
The Specialized Tarmac SL8 Road Bike is the fastest on the market, combining unparalleled aerodynamics, lightweight design, and exceptional ride quality.
Specialized

2025 S-Works Tarmac SL8 Road Bike Frameset - Carbon/Silver

£5,000.00
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 S-Works Tarmac SL8 Road Bike Frameset - Carbon/Silver

Season:2025

Brand:Specialized

Code:42774635441158

The Specialized Tarmac SL8 Road Bike is the fastest on the market, combining unparalleled aerodynamics, lightweight design, and exceptional ride quality. With eight generations and over two decades of development, it’s not just the fastest Tarmac, it’s the world’s fastest race bike.

Winning races is all about speed, not just aerodynamics or lightweight construction. The Tarmac SL8 delivers that speed through a perfect blend of aero efficiency, lightness, stiffness, and compliance. Specialized's Ride Science team, using real-world data and race simulations, confirms that the Tarmac SL8 is the fastest race bike ever made, 16.6 seconds faster over 40km, 128 seconds quicker at Milan-San Remo, and 20 seconds ahead on the legendary Tourmalet climb.

Aero Optimisation: Specialized have focused on aerodynamics where it truly matters, the leading edge. The Tarmac SL8 is their most aerodynamic road bike to date, even surpassing the Venge. The new "Speed Sniffer" nose cone reshapes the head tube for a sharper, lower-drag design, optimising airflow with a narrow, aero seat post that ensures cleaner air around the rider's legs for maximum speed.

Lightweight and Aero. Inspired by the Aethos, the Tarmac SL8 is engineered to hit the UCI minimum weight with a full aero setup. The frame weighs in at a mere 685g, 15% lighter than the Tarmac SL7 and lighter than any other bike on the World Tour*. This design efficiently distributes load, eliminating the need for additional carbon layers, resulting in an incredibly lightweight yet robust frame.

Superior Ride Quality. The Tarmac SL8 offers a 33% improvement in stiffness-to-weight compared to the SL7, enhancing handling, responsiveness, and race-winning geometry. This bike is stiffer at the pedals, more precise at the handlebars, and provides an unmatched level of comfort in the saddle. Thanks to Rider-First Engineering, every rider, regardless of size, enjoys the same exceptional ride quality. The Tarmac SL8 also delivers 6% more compliance, gliding over rough roads while maintaining the proven geometry and 32mm tire clearance of the SL7, allowing for versatile tire options.

Beyond Gender. Specialized design bikes for every rider, not based on gender. The Tarmac SL8 offers top-tier performance for all cyclists, making gender-specific designs outdated and unnecessary.

The S-Works Tarmac SL8 Frameset is the ultimate foundation for your dream bike build, featuring a 68mm threaded bottom bracket, flat mount disc brakes, and seamless integration for a hassle-free setup. The Satin Carbon/Silver to Green Pearl colorway is Specialized's lightest finish on an S-Works Tarmac SL8 Frameset, ideal for those who want a custom paint job. This RTP (Ready To Paint) colorway is the perfect blank canvas for you to create your dream bike with a custom painter.

Technical Information
  • Frame
    S-Works Tarmac SL8 FACT 12r Carbon, Rider First Engineered™, Win Tunnel Engineered, Clean Routing, Threaded BB, 12x142mm thru-axle, flat-mount disc. 685g frame.
  • Fork
    S-Works FACT 12r Carbon, 12x100mm thru-axle, flat-mount disc
  • SeatPost
    S-Works Tarmac SL8 Carbon seat post, FACT Carbon, 15mm offset
  • Seat Binder
    Tarmac Integrated Wedge
  • Headset
    STEM HEADSET SPACERS KIT FOR SL7 STEM & ROVAL RAPIDE COCKPIT USE
  • Weight
    1.38kg (3 lb, .7 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

SIZING

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
Seatpost Length300mm300mm300mm380mm380mm380mm380mm
Professional Opinion
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