TECHNO 160 or 185 Complete Windsurf Package with Thunder Rig Learning to windsurf for lighter ridersFast planing board for larger ridersDaggerboard for going upwind in light wind conditions The all new THUNDER a compact bump and jump free ride sail with medium stiffness, lots of horse power, amazing balance, extra drive and bullet proof construction We combined the full xply body and a small Dacron mast sleeve panel to create extra power when need it, a simple format that delivers the most important thing to drive you forward .. POWER.. 4.6 M ( Luff 380 , boom 166 cm ) 5.2 M ( Luff 410 , boom 176 cm ) 5.8 M ( Luff 425 , boom 185 cm ) 6.4 M ( Luff 444 , boom 194 cm ) This Full rig package comes with : RDM MAST 40% Carbon RDM Europin Aluminum Ext 27 mm Aluminum Boom 150-200 cm Europin Tendom universal joint uphaul line