(Image credit: Tom Wieckowski) Franziska Koch sprinted to victory at the end of Paris-Roubaix Femmes yesterday, fending off a two-on-one assault from no less than Marianne Vos and Pauline Ferrand-Prévot. The German national road race champion did so aboard her team-issued FDJ United-Suez Specialized S-Works Tarmac SL8 race bike, and I took a look at the Roubaix winning machine as Koch gave her a winner's press interview post-race. Article continues below Koch took the win on her team-issue Specialized S-Works Tarmac SL8 team bike. I grabbed it in the press room post-race. (Image credit: Tom Wieckowski) It was fitted with an aero Drag2Zero chainring. I couldn't make out the tooth count, but it looked good. I haven't seen much Drag2Zero on WorldTour road bikes. (Image credit: Tom Wieckowski) Roval Rapide CLX Sprint wheels for Koch, claimed to be Roval's fastest, deepest option and designed for speed on the flat and in sprints.…