unifiber hd aluminium sdm extension 1 zfins aerodynamic roof rack bag shape

aerodynamic roof rack bag shape that is ideal for traveling by car

T40M8 x 35 mm

which had only been available from the original manufacturers until 2023

so enjoy its speed potential for racing or busting out freestyle tricks

Large zipper opening for two main compartments

unifiber hd aluminium sdm extension 1 zfins aerodynamic roof rack bag shapeIntroducing the Unifiber HD Aluminum SDM Extension. If your sail requires high downhaul tension, the HD SDM Extension is the right tool for the job. The base itself is made of high quality polyamide to withstand the high tension of the downhaul. With a 3 roller pulley, the Extension reduces the effort you need to trim even a slalom sail. The functional length can be adjusted with one hand using the collar.