The bottom bracket box, with the BB386EVO system, has a diameter that is oversized by up to 86 mm, increasing the diameter of the lower diagonal tubes by up to 80 mm, which reduces the thickness of the tubes and increases the torsional and rear stiffness.
The RS1's chainstays are very short, in order to achieve a very reactive bike that converts your pedalling into power watts.
And a short, aerodynamic rear axle.
Frame: RS1 Disc ACR Monocoque
Fork: RS1 Disc Full Integrated Tapeder, Full Carbon 1.5
Drivetrain
Shift levers: Shimano Ultegra DI2 Hydra
Rear derailleur: Shimano Ultegra DI2 12sp
Front derailleur: Shimano Ultegra DI2
Crank set: Shimano Ultegra 52/36 12v
Cassete: Shimano Ultegra 11/34
Chain: Shimano Ultegra 12v
Brakes
Front brake: Shimano Ultegra Hydraulic
Rear brake: Shimano Ultegra Hydraulic
Wheelset
Tires: Hutchinson Epsilon 700x 28
Seat
Saddle: Prologo Dimension
Seat clamp: RS1 Integrated
Cockpit
Handlebar: EVO Monocoque ACR