Chinook SDM Carbon Extension US Cup

Chinook Carbon Standard US Base Cup Mast Extension Standard Diameter Carbon US Base Cup Medium $113, Tall $128 Chinook's lightest extensions come with the new Six Pin adjusting collar and are stronger than ever with reinforced sidewalls. All come with the proven US Power-Haul pulley and cleat system and centimeter index markings. Two centimeter adjustment increments. Tall 48cm, adds 48cm to mast length Medium 28cm, adds 28cm to mast length