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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.

AERO IN EVERYTHING: We’re putting aero where it matters - the leading edge - not just where it looks good. In the process we’ve created our most aerodynamic road bike ever. Yes, it’s more aero than the Venge. Clean air is optimized for maximum advantage with the Tarmac’s new nose cone - the Speed Sniffer. By moving the steer tube back - the tube that determines head tube width - the leading edge of the head tube can be much sharper, delivering a much lower drag shape. Utilizing new UCI rules, the Tarmac SL8 has the narrowest, most aero seat post we’ve ever made ensuring fast moving, dirty air around the legs can flow back more cleanly. Doesn’t victory smell sweet?
MINIMUM WEIGHT, MAXIMUM AERO: Tarmac SL8 took learnings from Aethos to be easily built at the UCI minimum with a full aero set up. The team delivered a mind bending, scale tickling 685 gram frame - 15% lighter than the Tarmac SL7 and lighter than anything on else on the World Tour*. With the ability to make lightweight a top priority in the down tube, seat tube, and rear of the bike lessons from Aethos were applied. The frame’s shape carries load so efficiently that extra carbon stiffness layers become redundant. *Unless of course you count the time Kasper Asgreen raced our 585 gram Aethos frame during a Tour stage.
GOES LIKE HELL, RIDES LIKE HEAVEN: With massive gains in stiffness-to-weight - an improvement of 33% over the SL7 - the Tarmac SL8 takes legendary handling, aggressive responsiveness and World Championship proven geometry to the next level. The bike is stiffer at the pedals, more precise at the bars, and combines it with a compliant ride in the saddle that sets a new benchmark for race bike comfort. Thanks to our Rider-First Engineering, every rider, regardless of size, gets the same unprecedented ride quality and handling. In the saddle the Tarmac SL8 delivers 6% more compliance, floating over rough road with a supple feel unique in the high strung world of race bikes. Tarmac’s proven geometry and 32mm tire clearance are identical to the SL7, ensuring easy adaptation and the versatility to run higher volume tires when needed.
BEYOND GENDER: There can be more difference between two male cyclists than between a male and female. Gender alone doesn’t provide nearly enough data to specialize and that means creating male or female bikes is arbitrary and outdated. Every rider can get the next level advantage of Tarmac SL8. It’s time to go Beyond Gender.
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.

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
Seatpost	S-Works Tarmac SL8 Carbon seat post FACT Carbon 15mm offset
Saddle	Body Geometry Power Expert
Handlebars	Specialized Expert Shallow Drop alloy 125mm drop x 75mm reach
Tape	Supacaz Super Sticky Kush
Stem	Tarmac integrated stem 6-degree
Seat Binder	Tarmac integrated wedge
Rear Brake	Shimano Ultegra Di2 R8170, hydraulic disc
Front Brake	Shimano Ultegra Di2 R8170, hydraulic disc
Chain	Shimano Ultegra, 12-speed
Cassette	Shimano Ultegra, 12-speed, 11-30t
Bottom Bracket	Shimano Threaded BSA BB
Shift Levers	Shimano Ultegra R8170, hydraulic disc
Crankset	Shimano Ultegra R81000
Rear Derailluer	Shimano Ultegra Di2 R8150, 12-speed
Front Derailluer	Shimano Ultegra R8150, braze-on
Chainrings	52/36T
Front Wheel	Roval C38, 21mm internal width carbon rim
Rear Wheel	Roval C38, 21mm internal width carbon rim
Front Tyre	S-Works Turbo, folding bead, 700x26mm
Rear Tyre	S-Works Turbo, folding bead, 700x26mm
Inner Tubes	Turbo Ultralight 48mm Presta valve
Weight	Size 56cm - 7.20kg (15 lb, 14 oz)

Please be aware that the images and description above are usually supplied by the brand / manufacturer and are in no way affiliated with Cycle Centre Congleton Limited T/A CycleStore. Cycle Centre Congleton Limited T/A CycleStore only resell items from third parties and do not design or manufacture any products.

Please see below for delivery options for Specialized Tarmac Sl8 Expert Ultegra Di2 Carbon Road Bike 2025.

If you do not see your country listed below please email sales@cyclestore.co.uk with details of products you wish to order and we will reply shortly with shipping costs and options.

UK Mainland

Order Value

Delivery Service

Delivery Time (From dispatch, working days)

Cost

Under £39.99

Royal Mail Tracked

2 working days (from the time of despatch, see below)

£3.99

£40.00 to £59.99

Royal Mail Tracked 48hr

2 working days (from the time of despatch, see below)

FREE

£60.00 - £199.99

Royal Mail Tracked 24hr or parcel force 24hr (weight Dependant)

Next working Day (from the time of despatch, see below)

FREE

£200+

Royal Mail Special Delivery or parcel force 24hr (weight Dependant) Signed for

Next working Day (from the time of despatch, see below)

FREE

Bikes

Parcel Force 48 Hour Signed For

48 Hour (2working days) (from the time of despatch, see below)

FREE

We aim to dispatch your order within 4 working days at the latest (excluding weekends and bank holidays), however most orders do leave within 1-2 working days. Items in stock will usually leave the same day.If your item is out of stock we will order it in and usually have the item within three working days. Should your item be unavailable from our suppliers we will notify you of any delays as soon as possible. You will receive an email to let you know when your order has left our premises. The delivery information above is from the time of despatch not from the time of ordering.

My Country:

International

Country

Royal Mail
(size restrictions apply)

Parcelforce

FREE Delivery

Bike Delivery

UK Mainland

N/A

£0.00
(2-5 Working Days)

FREE Delivery
on orders over £39.99
(10-12 Working Days)

£0.00

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Specialized Tarmac Sl8 Expert Ultegra Di2 Carbon Road Bike 2025 Product ID: 91195_

Specialized Tarmac Sl8 Expert Ultegra Di2 Carbon Road Bike 2025

Product ID: 91195_