Multipoint Replacement Lockcase Gearbox

Browse our range of multipoint replacement lockcase gearboxes, designed to restore smooth and secure operation to uPVC and composite doors. A failing gearbox is one of the most common causes of door lock issues, often leading to stiff handles or locks that won’t engage properly. Instead of replacing the entire multipoint system, a new gearbox provides a cost-effective repair that brings your door back to full working order. 

Our selection includes genuine replacement uPVC door gearbox cases and multipoint lock gearboxes suitable for a wide variety of door brands and profiles. Whether you’re repairing a composite front door or a uPVC patio door, you’ll find durable, trade-quality parts engineered for long-lasting performance. 

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