
Ronstan
Ronstan RF45151 40mm Cheek Block | Series 40 Fixed Mount Pulley
The Ronstan RF45151 Cheek Block is a fixed-mount 40mm pulley block designed for deck, bulkhead, or mast installation. Part of the Ronstan Series 40, it features a UV-stabilised acetal sheave, ball bearing system, delivering high strength and low-friction performance in a compact, durable form.
Ideal for vangs, outhauls, cunninghams, and control lines, the RF45151 provides clean, reliable line routing in space-restricted areas. It’s built to withstand harsh marine conditions and is a go-to block for efficient fixed-point rigging on dinghies, keelboats, and small yachts.
✅ Key Features
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Ronstan RF45151 – 40mm cheek block for fixed mounting
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Ball bearing acetal sheave for smooth line handling
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Designed for mounting on decks, masts, or bulkheads
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Ideal for vang, outhaul, and control line setups
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Compact, low-profile design for tight rigging spaces
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Suitable for dinghies, keelboats, and small yachts
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Part of the Ronstan Series 40 block range
Ronstan RF45151 40mm Cheek Block specifications:
- Sheave Ø 40 mm
- Max. Rope Ø 9 mm
- M.W.L. 325 kg
- B. L. 700 kg
- Weight 32 g