$ 50.34
1-2 weeks delivery time
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Optiparts EX1309 is a Harken 40 mm Carbo block designed for Optimist mainsheets and control lines, combining compact dimensions with ultra-lightweight and high-strength construction. Its precision ball bearing sheave ensures smooth low-friction operation under load, while the versatile design also allows use as a becket block in advanced rigging configurations.
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Optiparts EX1309 - Harken 40 mm Carbo Block – Ball Bearing Lightweight Block for Mainsheets
Optiparts EX1309 is a premium Harken Carbo block developed for Optimist dinghies and other small sailing craft where efficient, lightweight, and durable line handling is essential.
The block features a 40 mm precision ball bearing sheave that delivers smooth low-friction rotation, ensuring reliable performance for mainsheet and control line systems even under dynamic sailing loads.
Its compact and ultra-lightweight construction minimizes rigging weight without sacrificing strength, making it suitable for racing and performance-oriented sailing. The block can also function as a becket block, increasing rigging flexibility.
Brand Optiparts / Harken Part Number EX1309 Product Name Harken 40 mm carbo block SKU EX1309 EAN 7438206973928 Type Ball bearing carbo block Sheave Diameter 40 mm Max Line Diameter 10 mm Bearing Type Ball bearing Function Mainsheet and control line handling / can be used as becket block Application Optimist mainsheets and dinghy rigging systems
- Compact 40 mm Harken Carbo block
- Ball bearing sheave for smooth low-friction operation
- Ultra-lightweight yet extremely strong construction
- Ideal for Optimist mainsheets and control lines
- Can also be used as a becket block
- Suitable for racing and performance sailing applications
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