Wilier Endurance Ultegra Road Bike 2017

The Wilier GTR SL Endurance Ultegra Road Bike is light and responsive, yet comfortable and versatile. It’s also more aerodynamic than previous generations. In fact, it’s so good that it performs almost as well as Wilier’s top-of-the-line models and it’s not hard to see why, when you consider that the frame weighs a mere 990g in the medium size!

Wilier has employed forks with a tapered 1 1/8” to 1 ¼” steerer, which provides strong and responsive control. The forks have a widened integrated steerer that’s borrowed from higher spec models and an aero-shaped headtube. They’ve also adopted the same asymmetric rear chainstay design as well as tapered seatstays, which dull the vibrations of the road.

The GTR SL’s geometry is racy, yet also allows for comfort. Shimano's reliable Ultegra 11-speed gearing provides clean and quick shifts to give you the edge over your competitors. An FSA cockpit finishes off this race ready package.


Frame: Monocoque Carbon Fibre 60/46TON
Forks: Monocoque Carbon Fibre 46TON
Chainset: Shimano Ultegra 6800, 50/34T
BB Shell: Shimano PressFit
Brake/Shift Levers: Shimano Ultegra 6800
Front Derailleur: Shimano Ultegra 6800
Rear Derailleur: Shimano Ultegra 6800, 11-speed
Cassette: Shimano Ultegra 6800, 11-28T
Chain: Shimano CS-5800 105 11-28T, 11-speed
Wheelset: DT Swiss R 23 Spline
Tyres: Vittoria Rubino Pro, 700x28C
Brakes: Shimano Ultegra 6800
Handlebars: FSA Energy
Headset: FSA Orbit CE, 1 1/8"-1 1/4"
Saddle: Selle San Marco Aspide
Seatpost: Carbon Custom Wilier, 27.2mm


Asymmetric Rear Stays: Wilier's asymmetric chainstay design for the Cento1SR is the next evolution of the design concept they originally introduced in the legendary first generation Cento1. The drive side stay’s shape and lower positioning counteract chain torque, while the non-drive stay is shaped to balance those same forces from the opposite side. The lower drive-side stay also reduces typical “chain-slap” when your ride gets rough.
Integrated Fork: For the GTR series, Wilier implemented the same technologies they developed for their top end Zero.7, Cento1SR and Cento1AIR models, which give them stiffness and improved aerodynamics. The integrated fork design increases torsional stiffness due to the way it positions the downtube and top tube with respect to the headtube. The new lower position tube, integrates seamlessly with the fork crown, generating an aerodynamic profile, which is able to further reduce air resistance.
Stiffened Bottom Bracket Shell: By squaring the tubes around the bottom bracket area, and adding sharper edges to the frame, torsional stiffness is vastly improved on the GTR SL frame, while maintaining a standard PressFit bottom bracket with 41 x 86.5mm measurements.
Rear Stays with Differential Thickness: The rear stays are designed to be comfortable but stiff at the same time to ensure optimal ride quality. A differential thickness of the stays allows Wilier engineers to fine tune the ride feel. Near the seat tube, the stays are larger to ensure stiffness and efficiency, but moving away from the seat tube, they taper to a thinner profile, allowing maximum absorption of the vertical stresses.
Gravel Ready: The rear triangle has been designed to accept 28mm tyres, in line with the latest trend allowing the bike to be used in the growing “gravel bike” sector. The GTR SL can become the ideal set up for rides on rough or gravel roads.