Cervélo Caledonia Ultegra Di2Conceived on Thursday night rides that play fast and loose with the term "road ride," the Caledonia is built for the way modern riders actually ride. It balances durability, lightweight, and aerodynamics by utilizing a refined library of tube shapes and lower modulus carbon in key areas to mitigate brittleness. This delivers a performance race bike that handles long distances and high paces without limits.