Harken 40mm Carbo Air Double Swivel Block w/Becket

The Harken 40mm Carbo Air Double Swivel Block with Becket is a lightweight, high-performance rigging component engineered for applications demanding minimal friction and maximum load capacity in confined spaces. Originally developed for marine and sailing applications where weight penalty and smooth operation are critical, this double swivel block has found its way into automotive enthusiast and motorsport circles as an essential tool for engine hoists, cable routing systems, and custom suspension rigging. The becket attachment point makes it ideal for fixed installations where you need reliable load transfer without additional hardware.

Built from Harken's proprietary Carbo Air composite material, this block delivers the strength-to-weight ratio you'd expect from premium rigging equipment—at 0.2 lbs, it's substantially lighter than traditional steel or aluminum alternatives while maintaining exceptional working loads. The dual swivel design eliminates torque buildup and twisting that degrades rigging performance, while the low-friction bearing surfaces reduce energy loss during load transfer. At just 3 x 1 x 5 inches, the compact footprint allows integration into tight engine compartments and custom fabrication projects where space constraints demand intelligent engineering solutions.

Mechanics and fabricators rely on the Harken 40mm Carbo Air block for engine removal rigs, custom hoist systems, and suspension component installation on performance builds where precise load distribution matters. The integrated becket is compatible with standard cable, rope, and chain attachments, making it a versatile choice for one-off fabrication projects and permanent installation applications. Whether you're setting up a professional shop hoist system or engineering a bespoke solution for a full frame-off restoration, this block delivers the reliability and minimal weight penalty that separates professional-grade rigging from hardware store compromises.