Wondering how significant the aero difference would be between say the lowest P-Series (105, mechanical), P-Series Ultegra DI2 and P5 disc Ultegra DI2?
Caveats: assuming comparable fit, same wheels/ tires, acknowledging that the engine is most important, bemoaning the trend towards discs, hailing the trend towards discs, acknowledging the huge variety of other options both new and used, etc.
Aaron Bales
Lansing Triathlon Team
Caveats: assuming comparable fit, same wheels/ tires, acknowledging that the engine is most important, bemoaning the trend towards discs, hailing the trend towards discs, acknowledging the huge variety of other options both new and used, etc.
Aaron Bales
Lansing Triathlon Team