Name: Specialized Roubaix SL8 Expert - Shimano Ultegra Di2
Brand: Specialized
SKU: 94426-3156
Price: 5249.00 GBP
Availability: OutOfStock

We created the endurance road category two decades ago proving that high ergonomics means high performance. Today, the new Roubaix SL8 with Future Shock 3.0 is lighter, faster, and smoother than any road bike ever made, unleashing unmatched confidence. The road may be hell below, but on Roubaix, it’s always heaven above.

COMPLIANCE: Future Shock 3.0 is the star of the show, more tunable, adjustable, and durable than ever. Now, regardless of position on the bike, every rider experiences 20mm of smooth, stiction-free travel between the stem and head tube. Future Shock helps keep your hands and bars steady for a smoother ride with more control to stay fast, safe, and confident.
Our dropped clamp design exposes more seatpost to increase deflection, but “more” isn’t simply better. The Pavé seatpost controls that deflection for the optimal vertical compliance. Together they create AfterShock technology, and when paired with the Roubaix’s rigid rear triangle, deliver a smooth ride with no loss in efficiency.
The Roubaix SL8 is the smoothest road bike our Ride Science Team has ever tested—reducing impacts at the bars and saddle by 53% vs. the nearest competition. With Roubaix’s Future Shock 3.0 the wheel quickly moves over the bump, while rider mass remains stable, maintaining momentum in rough terrain. Typical forks deflect backward on impact, causing a measurable loss in speed. It’s a scientific fact, smoother is indeed faster.
CAPABILITY: The Roubaix pioneered endurance geometry, so you ride “IN” the bike, not “ON” the bike to relieve pressure on your hands, arms, and shoulders for capability and confidence on any road, yet it’s ready to dissect a mountain decent at full gas. Snuggle up.
With tire clearance up to 40mm, this endurance road machine delivers better traction than ever on rough roads and even light gravel. Thanks to lightweight, super-efficient Specialized tires, that extra tire volume and traction comes with no downsides.
Roubaix inspires really BIG days on the bike, so we’ve given it every mount your adventures could need—three bottle mounts, top-tube mounts, and it’s even fender-ready. So, go ahead and bring it all along for the ride.
PERFORMANCE: The new Roubaix SL8 is our most aero yet, with new aero shapes from our Free Foil library and dropped seat stays. At just 950 grams, the frame is lighter, utilizing lessons learned from the Aethos - the world’s lightest production frame - and Fact 10r carbon blend. Nothing in its class is faster or lighter than the Roubaix.

Frame	FACT 10R, Rider First Engineered™ (RFE), FreeFoil Shape Library tubes, threaded BB, 12x142mm thru-axle, flat-mount disc
Fork	Future Shock 3.2 w/ Smooth Boot, FACT Carbon 12x100mm, thru-axle, flat-mount disc
Crankset	Shimano Ultegra R8100, 50/34t
Chain	Shimano XT CN-M8100, 12-speed
Cassette	Shimano Ultegra CS-R8100, 12-speed, 11-34t
Shift Levers	Shimano Ultegra Di2 R8170, hydraulic disc
Front Derailleur	Shimano Ultegra Di2 FD-R8150, braze-on
Rear Derailleur	Shimano Ultegra R8150, 12-speed
Front Brake	Shimano Ultegra R8100, hydraulic brake
Rear Brake	Shimano Ultegra R8100, hydraulic brake
Front Wheel	Roval C38, 21mm internal width carbon rim, tubeless ready
Rear Wheel	Roval C38, 21mm internal width carbon rim, tubeless ready
Front Tyre	Mondo TLR Endurance Tire, 700x32, GRIPTON T2/T5
Rear Tyre	Mondo TLR Endurance Tire, 700x32, GRIPTON T2/T5
Handlebars	Specialized Hover Expert, Alloy, 125mm Drop, 75mm Reach w/Di2 Hole
Saddle	Body Geometry Power Expert, hollow Ti rails
Seat Post	S-Works Pave
Seat Binder	Hidden drop clamp
Inner Tubes	700x28-38mm, 48mm Presta valve
Bottom Bracket	Shimano Threaded BSA BB
Stem	Future Stem, Pro
Tape	Supacaz Super Sticky Kush

Colours	Gloss Fjord Metallic/White Pearl Fade/Emerald Metallic
Sizes	44, 49, 52, 54, 56, 58, 61, 64
Brand	Specialized
Model Year	2026
Barcodes	196625263453, 196625263606, 196625264023, 196625264115, 196625264221, 196625264313, 196625264351, 196625264412
SKUs / Part Numbers	94426-3144, 94426-3149, 94426-3152, 94426-3154, 94426-3156, 94426-3158, 94426-3161, 94426-3164