Allen A4043N-1 Moulding with Square Backing Plate for Keyball Trapeze System

Allen Keyball Trapeze System Backing Plate - Square

For many years the development team at Allen were keen to design a trapeze system that improves the safety of the sport and reduces the risk of entrapment by the traditional hook-on trapeze harness, or cause damage to the hull of your boat

Designer Julian Bethwaite had also been thinking along the same lines and had produced a prototype of the keyball trapeze system. In conjunction with Bethwaite Design, Allen have developed the concept into a sleek and innovative design, eliminating the hook altogether and creating a safe intuitive solution that really works.

The ball and guide is manufactured from solid aluminium in three parts:-

• A solid aluminium guide with an integral rope-friendly thimble for attachment to the wire via a height adjustable rope.


• A flexible section joining the ball to the guide enabling articulation


• A solid aluminium ball for smooth and secure location

The buckle is manufactured from two parts and bolted securely together:-

• A 3D moulded keyhole with a wide opening guides the ball securely into place when trapezing whilst easily releasing when required.

A stainless steel back-plate in either narrow or spreader format allow for easy changing to suit different designs of harness.

Moulding Properties

Learn more about caring for your gear on our product care page here