Choosing the right forklift fork extensions is essential for safe and efficient material handling. Using the wrong size or type can reduce lifting capacity and create unsafe working conditions, so it’s important to get it right.
This guide explains how to choose the correct forklift fork extensions based on your forklift, load type and application. You can also explore our full range of forklift attachments to compare different solutions. If you're new to them, start with our guide on when to use forklift fork extensions.
1. Match Your Fork Width
The most important factor when choosing fork extensions is ensuring they match the width of your existing forks. Extensions are designed to slide over the forks, so the fit must be correct.
Common fork widths include 80mm, 100mm, 125mm, 150mm and 200mm. Measure both the width and thickness of your forks before ordering, as the extension's max fork section must be equal to or just above both. Our guide on how to measure your forklift for fork extensions shows you what to measure.
Which fork extensions fit your forks?
- Up to 80 x 40mm: ultra heavy duty fork extensions, 1200mm to 1800mm long
- Up to 100 x 50mm: heavy duty fork extensions in 1800mm or 2000mm, or ultra heavy duty from 1200mm to 2400mm
- Up to 125 x 50mm: heavy duty in 1800mm or 2000mm, or ultra heavy duty from 1200mm to 2400mm
- Up to 150 x 60mm: ultra heavy duty, 1200mm to 2400mm
- Up to 200 x 75mm: ultra heavy duty, 1650mm to 2200mm
Not sure of your fork size? Send us your fork width, thickness and length and we'll confirm the right model.
2. Follow the 150% Rule
Forklift fork extensions should never exceed 150% of the original fork length. For example, if your forks are 1200mm long, your extensions should not exceed 1800mm.
Exceeding this limit can reduce lifting capacity and increase the risk of instability during operation.
3. Choose the Right Extension Length
Fork extensions are typically available in lengths from 1200mm to 2400mm. The correct length depends on the size of the loads you handle.
If you regularly move long pallets or materials, longer extensions may be required. However, always stay within safe operating limits and choose suitable fork extensions for your setup.
4. Consider Your Load Type
Forklift extensions are best suited for long, stable loads such as:
- Palletised goods
- Timber packs
- Steel lengths
- Oversized materials
They should not be used for uneven or unstable loads, as this can create safety risks.
5. Check Forklift Capacity
Adding fork extensions changes how weight is distributed across the forks. This can reduce the effective lifting capacity of the forklift.
Always check your forklift’s load rating and ensure it is suitable for the extended load. Our forklift fork extension safety guide explains how the load centre affects capacity.
6. Choose a Suitable Design
Most forklift fork extensions use a slip-on design with a closed base for added strength. This provides better support and durability for heavy-duty use.
For everyday long loads on 100mm or 125mm forks, our heavy duty fork extensions are made from 6mm pressed steel. For heavy, dense or frequent loads, or for 80mm, 150mm or 200mm forks, our ultra heavy duty fork extensions have a 13mm wall and come in lengths up to 2400mm.
Common Mistakes to Avoid
- Choosing the wrong fork width
- Exceeding the 150% length rule
- Using extensions for unstable loads
- Ignoring forklift load capacity
Avoiding these mistakes will help ensure safe and effective operation when using forklift attachments correctly.
Browse Forklift Fork Extensions
If you’re looking for reliable options, view our full range of forklift fork extensions available in multiple sizes with fast UK delivery. Not sure which size you need? Send us your fork sizes and we'll recommend the right model.
