The Seldén Code Zero 2:1 Dead End Fitting is a specialized mast-mounted bracket designed for 2:1 purchase halyard systems on Code Zero or asymmetric downwind sails with Seldén furlers (such as CX series).
This dead-end fitting provides a secure, low-friction anchor point inside the mast for the "dead" end of the halyard. By fixing the halyard here and running it through a block on the sail's halyard swivel, you create a 2:1 mechanical advantage. This setup delivers the high luff tension needed for optimal Code Zero performance while significantly reducing loads on winches, clutches, halyard exit boxes, and masthead sheaves—making hoisting and tensioning easier and safer, especially on larger boats.
Precision-engineered from high-strength materials it ensures durability, corrosion resistance, and reliable performance in demanding sailing conditions.
Primary Purpose
- Enables efficient 2:1 halyard purchase for Code Zero furling systems:
- Achieves required sail luff tension without excessive winch effort.
- Lowers overall rig loads at the masthead and halyard routing points.
- Ideal for boats using Seldén Code Zero furlers where halyard friction and load management are critical.
Key Features & Benefits
- Friction-free design — Smooth, rounded attachment minimizes halyard wear and drag.
- Simple single-hole installation — Drills through one mast wall section; easy retrofit or new build.
- High load capacity — Handles max halyard Ø up to 16 mm (model dependent); supports righting moment up to 350 (specific to mast compatibility).
- Tailored to mast sections — Available in 3 versions for Seldén mast sections from C156–F406.
- Clean, integrated look that maintains the mast's aesthetics and aerodynamics.
Installation Recommendation
Install by drilling a single hole in the mast wall (refer to Seldén manual 595-386-E in the "Downloads" tab). Secure with rivets (mandrel heads punched out for flush finish). Ensure proper alignment below the halyard exit to allow free running. Pair with a compatible 2:1 halyard block (e.g., Seldén high-load block) attached to the furling swivel. Always follow Seldén guidelines for mast section compatibility and halyard sizing to avoid overload.
| Ref. Seldén | Mast Section | Max. Halyard Ø mm |
Max. Righting Moment RM |
| 508-843 | C156-F228 | 12 | 45 |
| 508-844 | C245-F305 | 14 | 180 |
| 508-838 | C321-F406 | 16 | 350 |
| Code | Seldén 2:1 Dead End Fitting | Availability | Price | |
|---|---|---|---|---|
|
|
SELDEN 508-844-01R
|
3 days
|
€142.95 (inc. VAT)
€118.14 (ex. VAT) |
|
|
|
SELDEN 508-843-01
|
3 days
|
€149.96 (inc. VAT)
€123.93 (ex. VAT) |
|
|
|
SELDEN 508-838-01R
|
3 days
|
€439.00 (inc. VAT)
€362.81 (ex. VAT) |
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