RACE EXTENSION HD   FUNCTION AND RELIABILITY.   Solid Aluminium tubes combined with triple pulleys for friction free high tension downhauling. Severne offers 3 sizes of the HD extension to compliment the race and freeride range. 16 CM – Promoting compatibility with the Base Extension 40 and to shave important grams from your racing set up. 24 CM – Mid range adjustability 36 CM – Extra length when required   / ALIGNED TRIPLE PULLEYS / STAINLESS STEEL AUTOMATIC HINGED COLLAR SYSTEM / STAINLESS STEEL BUTTON AND MECHANISM / 0CM SETTING