The most stiff and powerfull mast, designed for experienced, heavier weight sailors. The MK4 mast for the Optimist is mainly suitable for sailors above 45 kg.

• Superior Lanurep spacecraft alloy
• High grade 45 um hard anodized surface
• Windesign wind indicator PRO
• Pennant holders
• Harken hook-in block
• 3 mm Dyneema primary halyard line with Windesign low friction ring
• Technora / Dyneema secondary halyard line
• Hard anodized aluminium Clamcleat
• Aluminium pin stop
• Sprit adjuster handle
• Low friction end stop