Chapman ATV Flail Mowers – Available for Sale

The Chapman ATV Flail Mower series delivers heavy-duty, all-terrain mowing solutions designed for farmers, landowners, and professionals. Ideal for land management and vegetation control, these versatile mowers handle dense overgrowth, rugged landscapes, and tough vegetation.

Choose from multiple models, including the fuel-injected FM PRO model, each built to tackle everything from fields and paddocks to woodland and trails.

See details of various models under the Models section below.

Key Features of Chapman ATV Flail Mowers

Robust Rotor Design

Durable 40mm central drive shaft and reinforced 90mm outer tube flail lugs deliver superior cutting power.
Bearing guards protect against debris such as string or wire, ensuring longer service life.

Centrifugal Clutch for Enhanced Safety

Automatic drive engagement/disengagement reduces wear and extends mower lifespan.
The self-adjusting design compensates for belt wear, minimising maintenance needs.

Lightweight & Manoeuvrable Design

Compact, low-profile construction enhances stability and manoeuvrability.
Ideal for mowing under trees and around obstacles on varied terrain.

Fuel-Efficient FM PRO Models

Powered by reliable Honda engines with fuel injection for consistent performance.
Lower fuel consumption reduces operating costs and downtime.

Explore our comprehensive Features & Benefits section below for a full overview of technical specifications and operational advantages.

Performance & Terrain Adaptability

Built for Heavy-Duty Use

Chapman ATV Flail Mowers are engineered to handle the toughest mowing conditions. Their heavy-duty construction allows them to cut through dense vegetation, bracken, reeds, and thick undergrowth with ease, ensuring durability and reliable performance over time.

Available Cutting Widths

These mowers come in 1.2M and 1.5M cutting widths, making them ideal for a variety of tasks, including parkland maintenance, paddocks, fields, woodland, and trails.

Versatile Terrain Adaptability

Designed for all-terrain use, Chapman flail mowers maintain consistent performance across rugged landscapes, providing efficient vegetation control whether you’re working in smooth fields or challenging woodland areas.

Commercial and Domestic Use

Whether you’re managing a large commercial property or maintaining your own land, Chapman ATV Flail Mowers deliver dependable, professional-grade results for a broad range of mowing needs.

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More Options

Looking for more options? Explore our full range of ATV flail mowers featuring various top brands for sale.

Chapman FM & FM PRO ATV Flail Mower Models

FM120 and FM150 ATV Flail Mowers

FM120 Model: Boasting a robust 21hp Honda Petrol Engine, the FM120 ATV flail mower features durable construction designed for dependable performance. Its distinctive double helix flail rotor ensures efficient, high-output mowing, even in dense vegetation. Large-diameter tyres enhance manoeuvrability, and an automatic belt tension system ensures reliable operation. The standard setup includes Y flails and a 1.2M cutting width.

FM150 Model: The FM150 model shares the same core specifications and features as the FM120 but offers a wider 1.5M cutting width, making it ideal for larger areas.

FM PRO ATV Flail Mowers

FM120 PRO Model: The FM120 PRO steps up with a 25hp Honda petrol engine featuring electronic fuel injection and efficient oil cooling — ideal for professional or high-demand use.
This heavy-duty mower offers forged hammer flails, a high-mass rotor for maximum cutting force, and a 1.2M cutting width.

FM150 PRO Model: Delivering the same professional-grade features as the FM120 PRO, the FM150 PRO extends the cutting width to 1.5M, offering maximum productivity without compromising on build quality or cutting power.

NEW 2026 Upgraded ATV Flail Mower Pro

The 2026 ATV Flail Mower PRO has been engineered for maximum power, durability, and precision. Every component has been upgraded to handle tough terrain and demanding conditions, making it the ultimate choice for professionals and smallholders alike.

New 2026 Upgraded ATV Flail Mower Pro Top Features:

Bigger Rotor & Heavy-Duty Flails for Superior Cutting Performance.
Double Flyweight Clutch for smooth, reliable engagement.
Larger Fuel Tank & Updated Batteries for extended run time.
All-New Axle Design & Strenx® Cutting Deck for long-lasting strength.
Wireless SmartCut Engine Controls for smarter, easier operation.

The 2026 ATV Flail Mower PRO sets a new benchmark in performance, reliability, and efficiency — built to get the toughest jobs done with ease.

Chapman ATV Flail Mower Features & Benefits

Standard FM models are fitted with the Honda commercial-grade GXV630cc 21HP V-Twin engine, whilst the Pro models are fitted with the fuel injected 25HP V-Twin engine. Both have the oil alert warning system built into the oil pump, to ensure maximum engine protection when mowing on steep, sloping terrain. This engine is supported by Honda's reputation for performance, reliability, and spare parts back-up when required.
The large diameter rotor arm is perfectly balanced to an "automatic" G6.3 dynamic specification which optimises the best cut possible when mowing light or heavy duty vegetation.
Unique double helix rotor whether on "Y" flails or "hammer" flails ensures an even cut for best results
Adjustable rear grass deflector to suit different mowing applications.
A full-width anti-scalping roller protects the blades from damage
The twin belt auto-tensioning system reduces belt wear and slippage when mowing under rough conditions.
A straight and offset drawbar feature allows for left and right positioning for cutting hedges and get into the corners of the fields.
The single cutting height adjustment lever ranges from 25mm up to 225mm.

Chapman ATV Flail Mower Specifications

Chapman ATV Flail Mower Options

ATV Flail Mower Front Break Bar

The full-width round bar with tapered ends fitted to the front of the unit protects against damage from bricks, boulders, etc., and helps guide the vegetation into the machine for a more controlled cut.

Mulching Cutter Bar

This serrated strip of metal fits on the underside of the flail mower and is positioned to allow the cutting blades to mulch the grass to a fine finish, speeding up the decomposition process.

Twin Wheel Axle

When the ground is very wet and boggy the twin “walking beam” axle is an absolute ‘must’, especially when mowing reeds.

Heavy Duty Forged Hammer Flails

Upgrade to the hammer flails to tackle heavy-duty, stalky vegetation, such as brambles, bracken, heather and established thistles.

FAQs

Whats is the difference between the standard Chapman FM and the Pro ATV Flail Mowers

Primarily, the Powerplant and the clutch pack system. The standard FM models are equipped with the proven commercial Honda 21HP 630cc V-Twin motor, in contrast to the 25HP – 800cc electronically fueled engine. Moreover, both models feature a top-tier clutch pack specification, while the Pro model boasts a double clutch pack.

What is the better mower, the Pro or the standard model?

Pardon the pun, but it truly is a case of “horses for courses.” For over 90% of users, the standard model suffices (refer to the woodland bramble video). The key consideration lies in the choice of cutting flail—whether it be the Y flails or the robust forged heavy-duty hammer flails!

Are Chapman ATV flail mowers the best?

Undoubtedly, they rank among the best. The Wessex and Chapman ATV Flail Mowers actively compete at the upper tier of the market.

Chapman ATV Flail Mower Manuals

Videos of Chapman FM & FM PRO ATV Flail Mowers

Watch these videos and discover the key features and specifications of the Chapman ATV flail mowers, including the recently upgraded 2026 ATV Flail Mower PRO.