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Specialized Roubaix SL8 Shimano Tiagra

$3,499.99

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.


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Specialized Roubaix SL8 Shimano Tiagra

Specialized Roubaix SL8 Shimano Tiagra

$3,499.99

Smoother is Faster

Specialized Roubaix SL8 Shimano Tiagra

Two decades ago, Specialized redefined endurance road cycling with the Roubaix, and now, the Roubaix SL8 takes that legacy to unprecedented heights. Lighter, faster, and smoother than any road bike ever made, it delivers unmatched confidence and performance. With Future Shock 3.0 at its core, riders enjoy 20mm of silky-smooth, stiction-free travel that keeps handlebars steady and hands relaxed, even on rough terrain. Combined with the Pavé seatpost and a rigid rear triangle, the Roubaix SL8’s AfterShock technology ensures a ride that’s not only smooth but incredibly efficient, reducing impacts at the bars and saddle by a remarkable 53% compared to its competition. The result? A bike that turns even the roughest roads into a heavenly experience, proving that smoother is indeed faster.

But the Roubaix SL8 isn’t just about comfort—it’s built for adventure and performance. Its endurance geometry lets you ride “in” the bike, relieving pressure on hands and arms while maintaining full confidence on technical descents. With tire clearance up to 40mm, this machine handles rough roads and light gravel with ease, offering superior traction without compromising speed. At just 950 grams, the Fact 10r carbon frame draws from Aethos-inspired engineering, making it the lightest and most aero Roubaix yet. Ready for epic rides, the Roubaix SL8 includes mounts for three bottles, a top tube pack, and fenders, ensuring it’s equipped for whatever your next big adventure demands. This is the endurance bike perfected—smooth, capable, and unstoppable.

Features

Specifications

Frame FACT 10R, Rider First Engineered™ (RFE), FreeFoil Shape Library tubes, threaded BB, 12x142mm thru-axle, flat-mount disc
Fork Future Shock 3.1 w/ Smooth Boot, FACT Carbon 12x100mm, thru-axle, flat-mount disc
Brakes Shimano BR-RS405, hyrdaulic disc
Shift Levers Shimano Tiagra R4000, hydraulic disc
Front Derailleur Shimano Tiagra R4000, braze on
Rear Derailleur Shimano Tiagra RD-R4000, 11 speed
Crankset Shimano Tiagra FC-R4000, 11-speed, 50/34t
Cassette Shimano CUES CS-RS400, 11-36t
Chain Shimano CN-LG500
Bottom Bracket Shimano Threaded BSA BB
Front Wheel Axis Elite Disc
Rear Wheel Axis Elite Disc
Tires Roadsport Wirebead Tire 700x32
Inner Tubes 700x28-38mm, 48mm Presta valve
Handlebars Specialized Hover Comp, Alloy, 125mm Drop, 75mm Reach w/Di2 Hole
Tape Supacaz Suave
Saddle Body Geometry Power Sport, steel rails
Seat Post S-Works Pave
Seat Binder Hidden drop clamp
Weight 9.44 kg (20 lb, 13.0 oz) – Size 56

*Specifications are subject to change without notice

Geometry

44 49 52 54 56 58 61 64
A Reach 353 363 370 381 389 397 403 409
B Stack 543 549 566 585 605 630 665 685
C Head Tube Angle 69.3° 70.8° 71.5° 72.3° 73° 73° 73.5° 73.5°
D Front Centre 589 587 593 598 604 620 631 634
E Bottom Bracket Drop 80 80 80 78 78 78 78 78
F Wheelbase 994 992 998 1005 1012 1031 1042 1054
G Chainstay Length 418 418 418 420 420 423 423 423
H Head Tube Length 90 90 105 122 140 168 202 222
I Top Tube Length 503 523 534 550 569 584 600 618
J Seat Tube Angle 75° 74° 74° 74° 73.5° 73.5° 73.5° 73°
K Standover Height 686 719 747 766 787 809 847 865
All measurements in degrees or millimetres

Sizing Guide

The sizing chart is a great place to start when picking your next bike but everyone will fit a bike a bit differently. Your torso, arm, and leg lengths all play into what size of bike you may need. Plus, there's your own personal preference.

We always recommend swinging by the shop and taking the bike that you're looking for a spin to see how it feels. If you're unable to come by, looking at the geometry of your current bike and comparing it is a good place to start. If you have any further questions, our customer service team is there to help.

Size Height
Imperial Metric
44 4'8" - 5'1" 142 - 155cm
49 5'1" - 5'5" 155 - 163cm
52 5'4" - 5'7" 163 - 170cm
54 5'7" - 5'9" 170 - 175cm
56 5'9" - 5'11" 175 - 180cm
58 5'11" - 6'2" 180 - 188cm
61 6'2" - 6'5" 188 - 196cm

Model Numbers

Size Model Number
Gloss Redwood Satin Deep Marine Metallic
44 94427-7144 94427-7244
49 94427-7149 94427-7249
52 94427-7152 94427-7252
54 94427-7154 94427-7254
56 94427-7156 94427-7256
58 94427-7158 94427-7258
61 94427-7161 94427-7261

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