These ultra heavy duty forklift fork extensions are designed for demanding applications where increased fork strength and load capacity are required. Built for handling long, oversized or high-weight loads, they provide a more robust solution than standard or heavy duty fork extensions. Suitable for standard forklift trucks, these forklift extensions slide directly over existing forks to increase reach and improve load stability across construction sites, builders’ merchants, and industrial environments. Manufactured with reinforced steel construction and a closed-base design, they are engineered for regular use in high-intensity operations where reliability is critical. For more options, view our full range of forklift fork extensions, compare with our heavy duty fork extensions, or explore our guide to forklift attachments. Key Features Ultra heavy duty reinforced steel construction Designed for high load and intensive use applications Closed-base design for increased structural strength Suitable for long, oversized and dense loads Multiple sizes available to suit different fork dimensions UK supplied, fully tested and certified About These Ultra Heavy Duty Forklift Fork Extensions Ultra Heavy Duty Forklift extensions are used when loads extend beyond the length of standard forks. By increasing fork reach, they improve load stability and reduce the risk of imbalance when handling long pallets, timber, steel, packaged goods, and other oversized materials. These ultra heavy duty forklift fork extensions are designed for more demanding environments where standard or heavy duty fork extensions may not provide sufficient strength. Their reinforced construction makes them suitable for frequent use and higher load demands. This makes them a reliable solution for operations that regularly handle oversized or heavy materials and require a more robust extension system. Specifications Specification Detail Product type Ultra heavy duty forklift fork extensions Construction Reinforced steel construction Design Closed-base design Fork compatibility Standard forklift forks Sizes available 80 x 40mm, 100 x 50mm, 125 x 50mm, 150 x 60mm, 200 x 75mm Overall sleeve sizes 108 x 50mm, 136 x 65mm, 161 x 65mm, 186 x 75mm, 236 x 90mm Finish Durable industrial coating Certification UKCA / CE Warranty 3 years Lead time 2–4 working day delivery Model Specifications Model Ref Suitable for Max Fork Section (mm) Overall Extension Width x Thickness (mm) FEX-80 80 x 40 108 x 50 FEX-100 100 x 50 136 x 65 FEX-125 125 x 50 161 x 65 FEX-150 150 x 60 186 x 75 FEX-200 200 x 75 236 x 90 Fitment & Compatibility These ultra heavy duty fork extensions for forklift trucks are designed to slide over existing forks and are retained securely during operation. It is important that the extensions match the width and thickness of your forklift forks to ensure safe use. As a general rule, fork extensions should not exceed 66% of the original fork length, and loads must be evenly distributed. Always ensure your forklift’s rated capacity is sufficient when using extensions, as extending fork length reduces lifting capacity. If you are unsure which forklift extensions are suitable for your truck, please contact us with your fork dimensions and forklift capacity for guidance. Safety & Certification All ultra heavy duty forklift extensions supplied are fully tested and comply with relevant UK safety standards. Ultra Heavy Duty Fork extensions should be inspected regularly and used in accordance with safe operating practices. Operators should ensure loads are stable, correctly positioned, and lifted within the forklift’s reduced capacity when using ultra heavy duty forklift fork extensions. Proper fitment and correct usage are essential to maintaining a safe working environment. Typical Applications Handling long pallets and oversized loads Builders’ merchants and timber yards Warehousing and distribution centres Manufacturing and fabrication environments Steel, plastics, and packaged materials Frequently Asked Questions What is the difference between heavy duty and ultra heavy duty fork extensions? Heavy duty fork extensions are suitable for regular use, while ultra heavy duty models are designed for more demanding applications where additional strength and reinforcement are needed. Will these ultra heavy duty forklift fork extensions fit my forklift? They are designed to fit standard forklift forks. Always check fork width, thickness, and forklift capacity before ordering. Do ultra heavy duty forklift extensions reduce lifting capacity? Yes. Extending fork length moves the load centre forward, reducing the forklift’s effective lifting capacity. Always operate within safe limits. What is the lead time? UK delivery is available, with typical lead times of 2–4 working days depending on size and specification. View all forklift fork extensions. Browse our full guide to forklift attachments.