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2015 Specialized

Roubaix SL4 Expert

A carbon frame endurance bike with high-end components and shimano ultegra rim brakes.
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FrameCarbon
ForkCarbon
Wheels700c Aluminum
Drivetrain2 × 11
GroupsetUltegra
BrakesShimano Ultegra Rim
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Insights
Ride Feel

Based on frame geometry and build specs.

Rider Position
relaxedaggressive
Terrain
smoothrugged
Roubaix SL4 Expert
Other Endurance bikes
Gearing

A bike with lower gearing will be easier to ride up steep hills, while a higher top end means it will pedal faster down hills.

Lowest gear

(climbing)

39 mph

Roubaix SL4 Expert

39 mph

Similar Bikes

Highest gear

(descending)

Sizing
49cm

5'1" – 5'5"

52cm

5'3" – 5'7"

54cm

5'5" – 5'9"

56cm

5'7" – 6'0"

58cm

5'10" – 6'2"

61cm

6'0" – 6'4"

🐐 Estimated

Rider Fit Notes

None yet.

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Reviews

Summary

The Specialized Roubaix is celebrated for its exceptional comfort and innovative features, such as the Future Shock suspension system and CG-R seatpost, which provide a smooth ride over rough surfaces. It's noted for its light frame and race-worthy efficiency, though some find its aesthetics and initial suspension feel unconventional. Comparisons often highlight its competition with the Trek Domane and Specialized Tarmac.

Pros
  • Future Shock suspension system improves comfort and control

  • Lightest frame Specialized has ever made

  • Highly adjustable fit with different springs, stems, and bars

  • Good performance on rough surfaces like cobbles

  • Remarkable comfort and vibration dampening

Cons
  • Future Shock suspension system feels odd initially

  • Aesthetic might not appeal to everyone

  • Mechanics claim hydraulic disc brakes can be finicky to set up

  • Some buyers might be put-off by the non-traditional styling

  • Slight feeling of imbalance between front and rear compliance on very rough roads

Key Quotes
The new Roubaix is something that has to be ridden to be believed
Bikerumor logoBikerumor
This Roubaix fit and felt like a race bike with the ride comfort of a mountain bike.
Cycling Tips logoCycling Tips
It’s a complete pleasure to ride.
Cyclist logoCyclist
The Roubaix behaves impeccably both on smooth tarmac and gravelly surfaces.
BikeRadar logoBikeRadar
Specialized has breathed new life into the platform with hydraulic discs that let the Roubaix stop the way it rides: on any road, in any conditions, in a WorldTour-worthy package.
VeloNews logoVeloNews

Feedback?

View all reviews

road.cc
Retro Paris-Roubaix: check out the Specialized S-Works Roubaix SL4 that Tom Boonen rode to victory in 2012

Apr 2025

Tornado Tom won Paris-Roubaix on this rim brake bike equipped with Zertz viscoelastic inserts that were said to damp vibration

Read Review

Bikerumor
First Impressions: Riding the new Specialized Roubaix from Flanders to Roubaix

Sep 2016 · Zach Overholt

When I found out that we would be headed to Kortrijk, Belgium for the Specialized launch, things started to click. We still didn’t technically know what we were going to see, but it was pretty easy to read between the lines. Not only is Kortrijk used as a base camp for major classics events, it’s …

Read Review

Gran Fondo Magazine
Specialized Roubaix SL4 Pro Disc Race UDi2 Review

Jul 2016 · Thomas Seidelmann, Robin Schmitt

Specialized Roubaix - Names aren’t given by chance, so by christening this bike as the Roubaix, you’ve got to either possess bags of unflinching confidence.

Read Review

Velo
Specialized S-Works Roubaix SL4 Disc Di2

May 2016 · VeloNews.com

The Roubaix SL4 had one hell of a debut when Tom Boonen rode it to a solo victory in Paris-Roubaix. But that was in 2012. Specialized has breathed new

Read Review

VeloNews
Reviewed: Specialized S-Works Roubaix SL4 Disc Di2

Apr 2016 · John Bradley

Specialized has breathed new life into the Roubaix with hydraulic discs that let it stop the way it rides: on any road, in any conditions.

Read Review

Cyclist
Specialized Roubaix SL4 Double review

Nov 2015 · Jordan Gibbons

Are the Zertz inserts on the Specialized Roubaix SL4 a gimmick? We're not sure but it's one of the most comfortable bikes we've ridden.

Highs
  • Very comfortable

Lows
  • Same fork rake regardless of the size

Read Review

Cycling Tips
Specialized Road Disc Review: new Tarmac versus Roubaix SL4

Sep 2015

While the pro peloton is only just starting to experiment with disc brakes, consumers have had access to road disc bikes for a few years. Specialized was an early adopter however a pure-bred race bike with disc brakes was missing from their catalogue until recently. In this review, CTech editor Matt Wikstrom compares

Read Review

BikeRadar
Specialized Roubaix SL4 Elite Disc review

Mar 2015 · Warren Rossiter

Rear shifts proved snappy, accurate and consistent, though at the front the chain occasionally held onto the big ring teeth a pedal rotation too long.

Read Review

Geometry
Specs
Build
Frame

Specialized SL4 FACT 10r carbon, FACT construction, tapered/shaped 1-1/8"" to size-specific lower headtube, compact race design, Zertz, internal cable routing, carbon OSBB

BB StandardBB30, Press Fit

Fork

Specialized FACT carbon, size-specific taper

Bottom Bracket

BB30, press-fit

Headset

1-1/8"" upper, size specific lower, stainless steel cartridge bearings, 10mm carbon cone spacer, w/ 30mm of carbon spacers

Stem

Specialized Pro SL, alloy, 4-bolt

Handlebar

Specialized Expert, shallow drop, 2014 alloy, 123mm drop, 75mm reach

Saddle

Body Geometry Toupé Expert Gel, hollow Ti rails, 143mm

Seatpost

Specialized CG-R, FACT carbon, single bolt, 27.2mm

TypeRigid

Pedals

Nylon flat test ride, loose-ball, w/ reflectors

Groupset
Rear Derailleur

Shimano Ultegra, 11-speed, long cage

Front Derailleur

Shimano Ultegra, 11-speed, braze-on

Crank

FSA, carbon, BB30, 50/34

Shifters

Shimano Ultegra, 11-speed

Cassette

Shimano Ultegra, 11-speed, 11-32

Chain

Shimano Ultegra, 11-speed

Brakes

Front: Shimano Ultegra, Rear: Shimano Ultegra

TypeShimano Ultegra Rim

Wheels
Rims

Front: Fulcrum S4, Rear: Fulcrum S4

Tires

Front: Specialized Turbo Pro, 127TPI, folding bead, BlackBelt protection, 700x25c, Rear: Specialized Turbo Pro, 127TPI, folding bead, BlackBelt protection, 700x25c

Rider Notes
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First added July 9

Last updated July 9

Not listed for 2,521 days