Ronstan RF56101 55mm Orbit Ratchet Block | Auto & Manual Mode Pulley

• The Ronstan RF56101 Orbit Ratchet Block is a top-tier 55mm ratchet pulley designed for precision control in high-performance sailing. Featuring both automatic and manual ratchet engagement, this block gives sailors the flexibility to choose their preferred mode for optimal responsiveness in different wind and load conditions.

  As part of the Ronstan Orbit Series, the RF56101 offers a high-strength, lightweight design with an ultra-low friction bearing system. The 10:1 holding power reduces hand fatigue and provides outstanding grip on sheets and control lines, making it ideal for spinnaker sheets, jib sheets, and main control systems on dinghies, sports boats, and catamarans.

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  ✅ Key Features

  • Ronstan RF56101 – 55mm Orbit ratchet block

  • Switchable auto/manual ratchet engagement

  • Delivers 10:1 holding power for reduced hand fatigue

  • Lightweight, fibre-reinforced composite body

  • Stainless steel load straps for maximum durability

  • Smooth, low-friction bearing system

  • Ideal for spinnaker and jib sheets, mainsheet fine-tuning

  • Designed for dinghies, skiffs, and sports boats

  • Performance-tested by top competitive sailors

Ronstan RF56101 55mm Orbit Ratchet Block Auto and Manual specifications:

• Sheave Ø 55 mm
• Max. Rope Ø 10 mm
• Max. Cable Ø – mm
• Pin Ø – mm
• M.W.L. 250 kg
• B. L. 750 kg
• Weight 78 g