LS4 800 R Flail Mower

The LS4-800 is a reversible flail head for excavators 4.5 – 8 Ton that has the capacity of cutting hedges, branches and brambles up to 8cm or up to 20cm with a forestry rotor. Available with a standard rotor with Y-blades or hammer blades, forestry rotor or forestry fixed tooth.

Enquire Now


Powered by Femac, the LS4 800R offers a 900mm reversible cut. With a choice of standard or forestry rotor this flail can cut anything from 8 to 20cm. Unlike others, Robustrack flails do not require a drain line thanks to being fitted with a block of valves that acts as an anti-cavitation/flow control system that stops any spike in pressure or sudden stoppage from damaging the motor. Without the cutting roller the flail can cut from left to right and from right to left as you cut. The cutting efficiency is increased as well as the area you can clear per hour. This is beneficial especially when working on the road, where minimising the time you spend travelling against the traffic flow is essential.

At Robustrack we aim to supply your attachment ready to use upon delivery so provide the option of mounting brackets, pipes and couplings with your order. We can also fabricate custom orders in our workshop for options including flotation brackets, angled adaptors, thumbs and much more.

Supplied with: -Protective chain guard on both sides – anti-cavitation/flow control – No drain line required

Choice of Y blades or Hammer blades, forestry rotor or fixed tooth.

Optional: Bracket with welded or removable pins – pipes and couplings – specialist or custom adapters/brackets/etc




Request additional information about this product.

Sale or Hire

Happy Customers

Customer testimonials

Gary Bowyer


A great company to do business with. They went the extra mile to contact me about my machine and requirements.

Martin Bond


My LS3-800 flail is indestructible! Really happy to highly recommend Robustrack - their attachments, service and overall friendly approach.

John Longden


Great people to deal with. Very happy with the aluminium loading ramps. Thanks!

Our Products

Brands we supply

Robustrack supply a range of top quality excavators and hydraulic attachments from manufacturers including:


Don't miss a thing

Newsletter Sign Up


Next Steps: Sync an Email Add-On

To get the most out of your form, we suggest that you sync this form with an email add-on. To learn more about your email add-on options, visit the following page ( Important: Delete this tip before you publish the form.

Talk to our sales team

Our friendly and knowledgeable sales team are dedicated to ensuring that you get the right fit when it comes to your machine and the job you wish to do. Give them a call today or send them a WhatsApp and let them help you find the perfect hydraulic attachment for your excavator.