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With the Grand Tours well and truly underway, it’s time for the teams to start rolling out their latest bikes. Wilier Triestina’s TwinFoil TT frame got its first race outing last weekend, and Caley Fritz was on hand to take it all in.
Written By: Caley Fretz
The bike is designed with a wide set fork and rear stays, with the goal of providing maximum clearance between the frame and wheels. Wilier says this minimizes air turbulence and drag caused by the frame’s interaction with spinning wheels.
“We’ve spent a lot of time in wind tunnels, both in Europe and in the U.S.,” said Angelo Cilli, President of Wilier Triestina USA. “We are excited to introduce a UCI approved time trial bike that leverages design features which make it fast as well as differentiate it from the rest.”
The TwinFoil features a few smart wind-cheating features. Most obviously, the frame makes good use of TRP’s integrated aero brake, placing it on the chain stays under the bottom bracket to completely hide the rear brake from the wind. The slick integrated seat post binder, and smart brake cable routing through the top tube are a nice touch as well.
Wilier also uses a sliding vertical dropout, adjustable using four mounting bolts. This allows for a consistent gap between tire and frame, regardless of tire size, as well as consistent positioning of the cassette in relation to the rear derailleur.