Shop the Specialized Tarmac SL8 Expert Ultegra Di2 Road Bike at Certini for lightweight aero performance.

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Shop Soiled: Specialized Tarmac SL8 Expert Ultegra Di2 Road Bike - 61cm

£3,799.00 £5,499.00 31% off

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

No Hassle Returns

Shop with confidence. If you've ordered the wrong size or you're not happy with a purchase it's not a problem. We want to help you find the right products to get the most out of your cycling. Simply return the item to us within 30 days in unused condition with all the packaging and we'll replace it or refund you. Kindly note that refunds can take up to 14 working days to process. *InvisiFrame kits are non-returnable/non-refundable.

We do not offer free returns because we aim to keep the cost of the product as low as possible. However, if the goods are found to be faulty, damaged or not as described, please contact us to discuss the returns process.

Call us if it's a bike as we can help arrange collection. Tel 01752 849315 or info@certini.co.uk

Please fill in the downloadable returns form to complete and return with your goods.

CLICK HERE TO DOWNLOAD THE RETURNS FORM

Returns Address:

Certini Bicycle Company
10 Kingsmill Road
Tamar View Industrial Estate
Saltash
PL12 6LD

Under the Consumer Rights Act you have a legal right to reject goods that are of unsatisfactory quality, unfit for purpose or not as described, and get a full refund - as long as you do this quickly. This right is limited to 30 days from the date you buy your product.

Shop Soiled: Specialized Tarmac SL8 Expert Ultegra Di2 Road Bike - 61cm

Season:2026

Brand:Specialized

Code:94926-3061 SS 0991X

Bike is brand new but may have cosmetic damage. No manuals or pedals supplied. Please contact 01752 849315 for details/images.

Shop Soiled: New bikes with some cosmetic damage, and come with full manufacturers warranty

The Specialized Tarmac SL8 Expert Ultegra Di2 Road Bike is engineered for speed, precision, and race-winning performance. With a perfect combination of aerodynamics, lightweight carbon frame, stiffness, and compliance, the SL8 Expert is the ultimate high-performance road bike for competitive cyclists, endurance riders, and anyone seeking pro-level race bike performance.

Pro-Level Carbon Frame: Lightweight 685g Tarmac SL8 carbon frame, engineered using Rider-First Technology for consistent ride quality across all sizes.
Aerodynamic Race Geometry: Featuring the Speed Sniffer nose cone and Specialized’s most aerodynamic seatpost ever for reduced drag and maximum speed.
Ultegra Di2 Electronic Groupset: Smooth, precise shifting with Shimano Ultegra Di2, perfect for competitive racing or fast group rides.
C38 Carbon Tubeless-Ready Wheels: Lightweight, aerodynamic wheelset compatible with tubeless tyres for improved speed, traction, and comfort.
SL7 Stem & Expert Shallow Drop Alloy Handlebars: Balanced handling, precise steering, and race-ready control.
Stiffness-to-Weight Optimisation: 33% improvement over the SL7, providing explosive power transfer and responsive handling.
Compliant Ride for Comfort: 6% more saddle compliance than SL7, smoothing rough roads without compromising race geometry.
Versatile Tyre Clearance: 32mm tyre capacity for comfort and adaptability on varying road conditions.
Beyond Gender Design: Optimised for all riders regardless of gender, ensuring world-class ride quality for every cyclist.

After eight generations and more than two decades of innovation, the Tarmac SL8 is more than just the fastest Tarmac ever, it’s a world-class aero road bike built to excel on climbs, sprints, and iconic race routes.

Performance Highlights

Fastest Race Bike on Key Routes: 16.6 seconds faster over 40km, 128 seconds faster across Milan-San Remo, and 20 seconds quicker on the Tourmalet climb.
Aerodynamic Efficiency: Leading-edge aero features for maximum speed on flats, descents, and technical sections.
Lightweight, World Tour-Proven Design: Lessons from the Aethos frame applied to reduce weight without sacrificing stiffness or handling.

The Specialized Tarmac SL8 Expert Ultegra Di2 Road Bike is the ultimate carbon race bike for performance-driven cyclists. Built with precision, speed, and comfort in mind, this high-end aero road bike is ready to dominate training rides, gran fondos, and professional racing.

The Specialized Tarmac SL8 Expert Ultegra Di2 is a lightweight carbon aero road bike, Ultegra Di2 electronic drivetrain, C38 tubeless wheels, Rider-First engineered, world-class race geometry.

Technical Information

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
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 Hydraulic Brake
Rear Brake
Shimano Ultegra Hydraulic Brake
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
Bottom Bracket
Shimano Threaded BSA BB
Chain
Shimano XT M8100, 12-speed w/ quick link
Front Wheel
Roval C38, 21mm internal width carbon rim
Rear Wheel
Roval C38, 21mm internal width carbon rim
Front Tyre
S-Works Turbo, 120 TPI, folding bead, BlackBelt protection, 700x26mm
Rear Tire
S-Works Turbo, 120 TPI, folding bead, BlackBelt protection, 700x26mm
Inner Tubes
Turbo Ultralight, 48mm Presta valve
Headset
Stem headset spacers kit for SL7 stem & Roval Rapide cockpit use
Weight
7.18kg (15 lb, 13.3 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 ft	4'8" - 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 cm	142 - 155cm	155 - 163cm	163 - 170cm	170 - 175cm	175 - 180cm	180 - 188cm	188 - 196cm
Bike Size	44	49	52	54	56	58	61

GEOMETRY

Size	44cm	49cm	52cm	54cm	56cm	58cm	61cm
BB Drop	74mm	74mm	74mm	72mm	72mm	72mm	72mm
BB Height	266mm	266mm	266mm	268mm	268mm	268mm	268mm
Bike Standover Height	723mm	735mm	746mm	768mm	786mm	808mm	834mm
Chainstay Length	410mm	410mm	410mm	410mm	410mm	410mm	410mm
Fork Length, Full	370mm	370mm	370mm	370mm	370mm	370mm	370mm
Fork Rake/Offset	47mm	47mm	47mm	44mm	44mm	44mm	44mm
Front Centre	572mm	574mm	577mm	579mm	592mm	606mm	613mm
Head Tube Angle	70.5°	71.75°	72.5°	73°	73.5°	73.5°	74°
Head Tube Length	99mm	109mm	120mm	137mm	157mm	184mm	204mm
Frame Reach	366mm	375mm	380mm	384mm	395mm	402mm	408mm
Seat Tube Angle	75.5°	75.5°	74°	74°	73.5°	73.5°	73°
Seat Tube Length	433mm	445mm	456mm	473mm	494mm	515mm	545mm
Frame Stack	501mm	514mm	527mm	544mm	565mm	591mm	612mm
Top Tube Length, Horizontal	496mm	509mm	531mm	541mm	563mm	577mm	595mm
Trail	71mm	63mm	58mm	58mm	55mm	55mm	52mm
Wheelbase	970mm	973mm	975mm	978mm	991mm	1006mm	1013mm
Stack to Stem	509mm	522mm	535mm	552mm	573mm	599mm	620mm
Reach to Stem	363mm	372mm	377mm	381mm	393mm	400mm	406mm
Crank Length	165mm	165mm	170mm	172.5mm	172.5mm	175mm	175mm
Handlebar Width	360mm	380mm	400mm	420mm	420mm	440mm	440mm
Stem Length	70mm	80mm	90mm	100mm	100mm	110mm	110mm
Saddle Width	155mm	155mm	155mm	143mm	143mm	143mm	143mm
Seatpost Length	300mm	300mm	300mm	380mm	380mm	380mm	380mm

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Consumer credit services are only available to over 18s and credit is provided subject to affordability, age and status. Minimum spend applies.

Credit is provided by V12 Retail Finance Ltd, a trading name of Secure Trust Bank Plc. which is registered in England and Wales: 541132. Registered Office: Yorke House, Arleston Way, Solihull, B90 4LH. Secure Trust Bank Plc is authorised by the Prudential Regulation Authority and regulated by the Financial Conduct Authority and the Prudential Regulation Authority with registration number 204550. For more information please visit www.v12retailfinance.com.

If you are intending to use finance as your payment option, please note we will only deliver your order to your billing address, and not to an alternative delivery address.

This is for estimation purposes only. Actual finance application is completed during checkout.

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Shop Soiled: Specialized Tarmac SL8 Expert Ultegra Di2 Road Bike - 61cm

Shop Soiled: Specialized Tarmac SL8 Expert Ultegra Di2 Road Bike - 61cm

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