Ronstan series 75 Core Block™, Mast Base with 8mm Clevis Pin

Ronstan series 75 Core Block™, Mast Base with 8mm Clevis Pin

18 in stock

The Ronstan Core Block™ Mast Base with Clevis Pin is a high-strength block specifically designed for installation at the mast base. Its self-lubricating composite bearing technology withstands extreme static loads without deformation. The clevis-pin system provides secure direct attachment to mast fittings and optimizes the lead angle. It is an ideal technical solution for redirecting halyards and control lines toward the cockpit with maximum reliability and minimal maintenance.

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At Saildeck Gear, we specialize in technical rigging, blocks, winches, and deck hardware for boats between 30 and 60 feet. We know that every boat is different: working loads, mast dimensions, the type of maneuver, and how you use your boat—cruising, racing, or charter—all affect what you actually need.

That’s why we don’t publish a fixed price on the product page: we prefer to speak with you first.

Tell us which product you’re interested in and which boat you’ll be installing it on, and we’ll prepare a quote tailored to your setup, including technical advice and with no obligation.

If you have any questions about compatibility, measurements, or which part is right for your rig, you can also contact us here. We normally respond within 24–48 hours.

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