The HD RDM extensions from Unifiber are designed for high loads and are best suited for high-performance racers and wave riders. They are said to be stiff and robust, all parts of the extension are hardened to give a secure feel even in the most difficult situations. The main tube is made of hardened T6 aluminium and the nylon base is fibre-reinforced. The connection between the two parts is reinforced with a stainless steel insert. The alignment of the pulley/cleat system makes rigging simple and intuitive.
The Unifibre HD RDM extensions are available in 30 cm or 45 cm lengths as required.