2014 Roubaix SL4 Pro Frameset

Smoother is faster. The more comfortable and less fatigued you are at the end of a 4 hour ride, the stronger you'll be. Like shocks on a race car, the Zertz vibration damping inserts on the Roubaix SL4 help absorb road impact and keep power planted firmly on the road - couple that with a FACT carbon 10r frame and it's still plenty stiff to thrash around in a sprint. Just ask four time Paris-Roubaix champion Tom Boonen

• Specialized SL4 FACT 10r carbon frame with Zertz is the fastest and smoothest endurance bike available, with size-specific engineering, tapered headtube, and ultra light weight

• Specialized FACT carbon fork with Zertz has size-specific engineering that creates a more balanced and stable ride for riders of different sizes

• The revolutionary CG-R post features 18mm of vertical compliance and Zertz vibration damping, while FACT carbon construction delivers unsurpassed comfort, control, and efficiency without adding weight or complication to the frame