The Zipp Vuka Evo Carbon Extensions decrease drag by starting airflow over the body sooner while keeping the arms and wrists in a comfortable relaxed position. The Evo shape with a 20mm inward roll and multi-radius bend is now available for the first time in carbon allowing for even more complex shaping and lighter weight. Utilizing the same Exogram technology found in SRAM RED crankarms the Vuka Evo Carbon 70 and 110 go beyond the capabilities of aluminum. The end is contoured to better fit the hand as well as transition smoothly from the back of a mechanical shifter. Cable routing is fully internal.