Specialized Roubaix SL4 Elite Disc review

Legendary sportive machine takes the hydraulic disc brake route

Our rating 
4.0 out of 5 star rating 4.0
GBP £2,000.00 RRP | AUD $3,099.00 | USD $2,800.00

Our review

A consummate sportive machine that’s capable of much, much more
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As with Giant’s Defy, the disc brake chassis of the latest generation SL4 Roubaix isn’t just an adaptation but a reworking from the ground up. The rear disc is mounted inboard between the chain and seatstays, and up front the all-new fork has a carbon pillar mount for the caliper. While the full internal routing for the rear hydraulic hose is neatly done, the fork’s buzz-reducing Zertz elastomer insert means the front hose has to be externally routed to bypass it. It’s a compromise in looks only, and doesn’t affect front end plushness.

  • Highs: Compelling comfort and fun handling
  • Lows: Sluggish front shifts and middleweight wheels
  • Buy if… You want a bike with commanding handling, ultra-smooth riding and the potential to get off the beaten track

On our test loop, which includes a couple of miles of gravel military roads, we got a real sense of what the SL4 is all about. On tarmac the Roubaix, with more aggressive geometry than the previous version, has an impressive turn of speed, with the stiffness in the frame rewarding hard-pedal efforts, yet the plushness of the chassis and the brilliant CGR (Cobl-Goblr) seatpost keep things comfortable.

It looks strange, but the cobl-goblr seatpost adds bags of comfort:

It looks strange, but the Cobl-Goblr seatpost adds bags of comfort

Intrigued by this smooth ride, we took the SL4 out again, this time for 60 miles of almost all unmetalled roads, and it shone even more brightly. Specialized doesn’t claim the Roubaix as a ‘gravel’ or adventure bike (it has the Diverge for that), but it’s one very capable machine on rougher surfaces.

Climbing on the Roubaix is a joy. On tarmac it feels light, even though the overall weight would suggest otherwise, and you can stay seated and grind up steep slopes with little traction, gravel even, with the wide cassette giving a light low-torque gear to avoid slips.

The roubaix behaves impeccably both on smooth tarmac and gravelly surfaces:
Robert Smith

The Roubaix behaves impeccably both on smooth tarmac and gravelly surfaces

The drivetrain and braking are all SRAM Rival, save for an FSA chainset, and on the whole we were impressed. 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. We think it’s down to the tooth profiles not meshing as slickly as they should with the 11-speed chain, despite the fast-shifting Yaw front derailleur design.

What does impress are the hydraulic brakes. They’re quiet, with great power modulation and consistency, although compared with Shimano there’s a little more lever travel before you feel the pads start to engage.


Sluggish front shifts aside, the SL4 Elite is an impressive, well-mannered machine, on and ‘off’ road.

Product Specifications


Name Roubaix SL4 Elite Disc (15)
Brand Specialized

Brakes SRAM Rival Hydraulic
Seatpost Specialized CGR Fact
Weight (lb) 19.8
Year 2015
Wheelset Axis 2.0
Weight (kg) 8.98
Stem Specialized Comp
Shifters SRAM Rival
Saddle Specialized BG Toupe
Cassette SRAM PG 1130, 11-speed, 11-32
Rear Tyre 25mm Specialized Espoir Elite BlackBelt
Handlebar Specialized Comp
Front Tyre 25mm Specialized Espoir Elite BlackBelt
Frame Material Carbon
Fork Carbon
Cranks FSA Gossamer, BB30, 50/34
Frame size tested 58cm