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Upgrading Furlex 304S to 304E. Excluding parts for electric installation.
Upgrade your manual Furlex Push-button performance is an easy upgrade for anyone who already has a manual Furlex 200S, 300S or 400S series (production year 1997-2015) or the current models 204S, 304S or 404S on their yacht. The furling line, drum and line guard assembly are simply replaced with a Furlex Electric motor unit. No sail conversion is required as the luff length of your existing sail is unaffected.
You will also need the appropriate Control Pack, which you can select below, and if you haven't already installed a Selden Power Supply on your boat you will also need to choose one of these on Power Supply Unit Start Packs.
For further information please see the Selden Electric Furling Data Sheet.
Please select the forestay diameter you require and the type of Control Pack required.
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If your yacht is equipped with the Furlex 304S, you already benefit from Seldén’s robust manual furling system designed for boats up to 15 tonnes displacement. But when sailing short-handed, managing heavy headsails, or simply seeking modern convenience, upgrading to the Furlex 304E offers a transformative leap in control, safety, and ease.
The 304E retrofit brings push-button furling to your foredeck—without changing your sail or forestay setup.
Upgrading from the 304S to the 304E is a modular retrofit. You retain your existing foil extrusion and forestay. The upgrade replaces the manual drum and line guard with an electric motor unit and control system.
Tack assembly
No sail recutting is required—the luff length remains unchanged.
Retrofit-ready for Furlex 304S or 304TD systems (1997–present)
| Specification | Value |
|---|---|
| Original System | Furlex 304S |
| Upgrade Target | Furlex 304E |
| Max Boat Displacement | 15,000 kg |
| Forestay Diameter Options | 8 mm, 10 mm |
| Max Forestay Length | ~20.3 m |
| Motor Voltage | 48V (via 12/24V converter) |
| Control Options | Genoa, Cutter, SEL-Bus |
| System Weight | ~33.5 kg |
Installation is best performed by a professional rigger or marine electrician, especially given the power requirements and load-bearing components. The process typically involves:
The upgrade is available as a complete kit, and additional accessories may be required depending on your yacht’s layout.
Upgrading from Furlex 304S to 304E is a powerful step toward modern, stress-free sailing. With push-button control, high-torque performance, and seamless integration, the 304E delivers unmatched convenience and confidence for larger yachts navigating demanding conditions.
Whether you're preparing for offshore passages or simply want to make life easier on deck, this upgrade transforms your sailing experience—bringing electric precision to one of the most critical systems aboard.
A quick look at the conversion of a standard Furlex system to electric drive. Simply put, you replace the line drum with the electric drive unit and install the Seldén SEL-Bus system that includes all the electronics. Learn about our functions for SMART sail handling.
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