ALLETT RC51A Aerator Cartridge (Kensington 20)
Custom-built for the Allett Kensington 20 Cylinder Mower, this 20-inch aerator cartridge lightly penetrates soil to allow air, water, and nutrients to reach the grass roots more easily. Ideal for regular use, it promotes stronger growth, better drainage, and a healthier, more resilient lawn.
RRP: £296.6
Our Price: £281.00 (inc VAT)
Out of stock, available to pre-order
About the ALLETT RC51A Aerator Cartridge (Kensington 20)
A Gentle Route to a Great-Looking Lawn: Allett RC51A Aerator Cartridge (Kensington 20)
Great-looking lawns rely on more than just surface care. Beneath the grass, soil condition plays a vital role in how well your lawn performs. The Allett RC51A Aerator Cartridge is designed to improve that foundation, helping air, water, and nutrients reach the roots more effectively. Made exclusively for the Allett Kensington 20, this 20-inch (51cm) cassette offers you a simple yet effective way to support the long-term health of your lawn.
Seamless Integration with Your Allett Mower
Designed specifically for Allett’s Kensington 20 Cylinder Mower, this aerator cartridge will fit perfectly and work in harmony with your machine. Using Allett’s quick-change system, you can swap it in place of the cutting cylinder in just a few minutes. This makes it easy to move between mowing and soil care, allowing you to adapt your approach as your lawn requires.
As part of the updated RC system, the RC51A cartridge replaces the earlier QC range. It also includes instructions for replacing the RC bracket with a rubber stopper, which ensures its compatibility with older Kensington models.
Promotes Root Development
This non-driven aerator cartridge works by forming small openings across the surface of the lawn. These channels allow essential elements to travel more freely into the soil, reaching the root zone with greater ease. Having improved access to water and nutrients means roots can grow deeper and develop more strength.
As the root system improves, the grass above becomes denser and more robust, creating a lawn that looks fuller and performs more consistently.
Reduces Surface Compaction
Over time, soil can become compacted, especially in areas with regular use. When this happens, water struggles to drain, and roots can become restricted. The Allett aerator cartridge helps to break up the compacted surface layer, allowing moisture to move through the soil more efficiently.
With pressure on it eased, the lawn is in a better position to absorb what it needs, supporting healthier and more balanced growth over time.
Encourages Better Nutrient Absorption and Thatch Breakdown
Opening up the soil surface improves how nutrients are absorbed. Fertilisers and natural nutrients can reach the roots more directly, helping the lawn make better use of each application.
At the same time, this Allett cartridge helps loosen surface thatch, encouraging it to break down naturally. This prevents it building up, blocking moisture and restricting airflow.
Improves Lawn Strength and Appearance
With better access to water and nutrients, your lawn becomes more resilient to stress. It can cope more effectively with dry conditions, foot traffic, and general wear. Recovery times improve, and the overall appearance becomes more consistent.
The result is a lawn that not only looks healthier, but also maintains its quality throughout the year.
Designed for Light, Regular Maintenance
The RC51A aerator cartridge is intended for gentle, ongoing aeration rather than deep soil work. It penetrates the surface to a depth of up to 5mm, making it ideal for lawns that are already well maintained. It performs best on closely cut lawns with minimal thatch, typically below 20mm in height. To achieve the most effective results, use it on a monthly basis during the growing season.
For more intensive aeration, such as coring, this should be carried out separately once a year, usually in spring or autumn.
Built by a Brand You Can Trust
With more than 60 years of experience, Allett has established itself as a market leader in cylinder mowing. Designed and built in Staffordshire, their products are trusted by homeowners and professionals alike. This aerator cartridge reflects the company’s expertise, offering excellent performance and long-lasting reliability.
Support Your Lawn from the Ground Up
If you want to improve soil structure and encourage stronger grass growth, the Allett RC51A Aerator Cartridge offers your Kensington 20 a smart upgrade. Simple to install and straightforward to use, it helps create the conditions your lawn needs to thrive. Order one of these Allett aerator cassettes today to support your lawn from the ground up.
FAQs
How frequently should this aerator cartridge be used?
Using it once a month during the growing season helps maintain good soil condition and supports consistent lawn performance.
Can this aerator handle heavily compacted or neglected lawns?
The Allett RC51A cartridge is designed for light surface work. For more severe compaction, a deeper aeration method such as coring should be used before switching to this cartridge for regular upkeep.





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