OX45M3 – Optimist Spriet 27 mm Optimax MK3
The MK3 sprit is an allround 27 mm sprit which is suitable for the majority of the sailors.
- Superior Lanurep spacecraft alloy
- Anodized to a dark grey color
- Grey glass fibre filled Nylon sprit ends
- 15 cm heat shrinkable sprit protection tubing,
prevents wear between mast and sprit

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OX35M4 – Optimist Baum 45 mm Optimax MK4
A stiff allround 45 mm racing boom which is mainly suitable for sailors from 35 to 45 kg.
- High grade alloy, dark grey anodized
- Glass fibre filled nylon in- and outboard end fittings
- Glass fibre filled nylon V-shaped outhaul cleat
- Glass fibre filled nylon lacing eyes
- Fitted with outhaul trim strip
- 3.5 mm Polyester outhaul line
- 3 mm Dyneema boom preventer line
- 3 mm Dyneema bridle with stainless steel ring
- 3 mm Dyneema primary vang line
- 5 mm Dyneema / Technora secondary vang line
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OX234M3F – Optimist Rigg komplett Optimax MK3 Flex
MK3 Flex spar set for the Optimist. Suitable for sailors below 35 kg
Material: Superior Lanurep spacecraft alloy
Anodized: Top grade hard dark grey- MK3 Flex mast (OX25AB3F)
- MK3 40 mm boom (OX35M3
- MK3 27 mm sprit (OX45M3)
Supplied with rigging pack (OX25):
1 x Harken ball bearing hook-in block
1 x Windesign 25 mm low friction ring
1 x Windesign wind indicator PRO
1 x Deck collar with mast sleeve
1 x Nylon sprit adjuster handle
2 x Nylon top pins
1 x Dyneema primary halyard line
1 x Technora / Dyneema secondary halyard line
5 x 2.2 mm tack lines
12 x 1.2 mm double lacing lines -
OX25AB3M – Optimist Mast Optimax MK3 Medium
The MK3 MEDIUM mast fits perfectly in our mast range between the regular MK3 and MK3 FLEX; it’s 8% more flexible compared to the MK3 mast and 8% stiffer compared to the MK3 FLEX mast. The MK3 MEDIUM mast for the Optimist is mainly suitable for sailors from 30 to 40 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
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OX35M5 – Optimist Baum 48 mm Optimax MK5
A lightweight yet ultra stiff and powerful 48 mm racing boom which is mainly suitable for the more experienced, heavier weight sailors above 45 kg.
This boom comes with an improved bridle system, an adjusted outhaul cleat position and a colored PRO outhaul trimstrip.
- High grade alloy, dark grey anodized
- Glass fibre filled nylon in- and outboard end fittings
- Glass fibre filled nylon V-shaped outhaul cleat
- Glass fibre filled nylon lacing eyes
- Fitted with the colored PRO outhaul trim strip
- 3.5 mm Polyester outhaul line
- 3 mm Dyneema boom preventer line
- 3 mm Dyneema bridle with two stainless steel rings
- 3 mm Dyneema primary vang line
- 5 mm Dyneema / Technora secondary vang line