CS Johnson Dyneema Splice Lifeline Kits – DIY Synthetic Lifelines Upgrade

Upgrade your boat’s lifelines with CS Johnson Dyneema splice lifeline kits, designed for sailors who want the strength of wire lifelines with the modern performance and appearance of synthetic line.

These kits let DIY boat owners replace aging wire lifelines with high-strength Dyneema, creating lifelines that are lighter, easier to handle, and corrosion-free while maintaining the safety sailors depend on offshore and coastal cruising.

Each kit includes CS Johnson’s beautifully finished stainless fittings paired with Dyneema lifeline material that can be easily spliced and installed by owners with basic tools.

Available configurations allow you to outfit small boats, larger boats, or install lifeline gates at midship or aft cockpit locations.

Why Sailors Are Switching to Dyneema Lifelines

• Strength comparable to traditional stainless wire

• No broken wire strands or corrosion issues

• Lighter weight aloft

• Comfortable to lean against

• Easy DIY installation and future adjustment

• Clean, modern appearance on deck

• Professional marine-grade fittings from CS Johnson

Ideal For

• DIY sailors replacing aging wire lifelines

• Boats upgrading to synthetic standing rigging components

• Owners adding boarding or cockpit lifeline gates

• Cruising sailors wanting easier maintenance

If you’re comfortable with basic splicing or want a manageable weekend project, these kits make upgrading lifelines straightforward while keeping a professional finish on deck.

For double-course lifelines, buy 2 kits. For adding a gate, use one of the Splice Gate Kits per course.

LL Kit Contents – Small Boat (to 30′)

• 2 × CS Johnson Toggle Jaw with Splice Eye – LS 3600
• 2 × CS Johnson Tubular Turnbuckle with Splice Eye – LS-2900
• 70′ Grey 1/4″ (6mm) Dyneema
• Splicing and Install Instructions, Fid/Needle/Twine

LL Kit Contents – Large Boat (to 40′)

• Same as Small Boat Kit, but with 90′ Dyneema

Gate Kit, Midship (1 course, 1 side)

• 1 × CS Johnson Pelican Hook – LS-3100 (here’s a demonstration video)
• 1 × Splice Eye to Splice Eye Fitting – LS-3200
• 1 × Gate Eye to Splice Eye Fitting – LS-3300
• 1 × Adjuster with Splice Eye – LS-3400
• 6′ Dyneema

Gate Kit Contents – Gate Kit, Aft (1 course, 1 side)

• 1 × CS Johnson Pelican Hook – LS-3100
• 1 × Gate Eye to Splice Eye Fitting – LS-3300
• 6′ Dyneema lifeline line