The S2 pioneered carbon aero road bicycles. Cervelo's experience in building aerodynamic frames without losing focus on weight, stiffness, strength AND comfort, has been proven with multiple wins on the cobblestones. Introduced in 2009, the S2 remains a vital part of the S-series and still offers a true aero value today.

Details:

• TrueAero™ shapes - scientifically derived, location specific airfoils result in the lowest drag and truncated sections to integrate components and make the airflow clear the water bottle
• Smartwall™ for Carbon - carbon strength and stiffness depend on the size, shape, material, and fiber direction of each of the 300+ pieces in each frame. Smartwall™ puts extra carbon on the sides far from the center plane to increase stiffness with little additional weight and has less material where it is not needed for added comfort and low weight.
• S2 aero seat stays - TrueAero™ shapes in the direction of the airflow and a different shape on the inside than the outside to deal with the spinning wheel. S-Bend contributes to vertical compliance for added comfort.
• Aero head tube - narrow area between the bearings reduces the frontal area and thereby the wind drag
• Oversized bottom bracket area - Big volume and fluent form aligns the carbon fibers with the complex loads in this area. Increases in side-to-side and torsional stiffness for better power transmission and handling
• ICS3 Internal Cable Stops - internal cable system improves aerodynamics while maintaining the highest shifting quality. 200 grams lighter than traditional designs. Stainless steel internals with replaceable Teflon® liners further reduce friction. Integrated top tube adjuster allows on-the-fly fine tuning.