Specialized Roubaix SL4 Comp Disc

Here’s a bike that marks a significant stage in the evolution of disc braked road bikes. The Specialized Roubaix SL4 Comp Disc combines hydraulic discs with cable operated gears, showing that hydraulic technology is no longer exclusive to the absolute top of the range machines.

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Specialized categorize this bike as Road “Endurance”, which marks it down as a contender in the sportive market. It combines wide gear ratio options, powerful hydraulic discs and both the frame and seat pin feature vibration/shock damping inserts to make for a smoother, more comfortable ride. The brakes also have cooling fins and the discs are faced with steel, but have lighter and more heat dispersant alloy cores. Again, this puts it firmly into the long distance, mountain hopping world of the the sportive rider or continental mountain pass bagger.

However, the carbon frame and overall light weight also mean that it’s a tight bike to ride, with plenty of potential to handle sprints and shorter, punchier rides.

Key Spec:


– AXIS 4.0 Disc wheelset is reliable and strong
– Specialized Turbo Pro tyres deliver low rolling resistance w/ superior cornering traction
– TURN Zayante BB30 crank provides excellent power transfer
– Shimano 785, hydraulic disc brakes provide reliable, consistent stopping power
– Shimano Ultegra, 11-speed rear derailleur is lightweight w/ smooth and precise shifting
– Minimalist, high-performance Body Geometry Toupé Comp Gel saddle w/ hollow Cr-Mo rails
– Lightweight and efficient, FACT carbon CG-R seatpost w/ Zertz vibration damping
– More on this model on the Specialized website