Zipp developed an extensive line of aluminum aerobar extensions to provide the perfect fit for any rider, regardless of size or riding position. Vuka extensions are designed to deliver improved aerodynamics by placing hands closer together and nearer to the rider's head to start airflow over the rider sooner. Vuka Alumina Race Extensions feature 52mm of rise, along with a bend that places the wrists at a more natural bend to help riders remain in their tuck to optimize aerodynamics. - Clean internal cable routing for easy installation