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  3. Bullmax HD Stump Grinder 300mm – 390cc 4-Stroke Honda GX390 Engine (BMSG300-GX390)
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Bullmax HD Stump Grinder 300mm – 390cc 4-Stroke Honda GX390 Engine (BMSG300-GX390)

$3,998.00

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Bullmax HD Stump Grinder 300mm – 390cc 4-Stroke Honda GX390 Engine (BMSG300-GX390)

The Bullmax HD Stump Grinder is purpose-built to make short work of tree stumps and roots without the cost of hiring a machine or calling in a contractor. Compact, well balanced and easy to manoeuvre, it grinds from 600mm above ground level right down to 235mm below grade — clearing stumps completely so you can re-turf, re-plant or build over the top.

At the heart of the machine is a heavy-duty 300mm grinding wheel fitted with 9 carbide-tipped teeth, spinning at 3,600 rpm. The thick carbide elements can be re-sharpened many times over, keeping your running costs down over the life of the machine. Power is transmitted through a heavy-duty centrifugal clutch and twin thick drive belts, delivering smooth engagement and consistent torque into the cut.

Powered by the Honda Australia approved 390cc Honda GX390 4-Stroke OHV engine, this grinder starts easily every time thanks to Honda's automatic decompression system and soft-grip recoil handle. Digital CDI ignition with variable timing delivers strong power output, low fuel consumption and clean emissions, while a cast iron cylinder sleeve and purpose-built components mean reliable long-term service under heavy workloads — plus reduced vibration and noise for the operator.

Getting to the stump is half the job. With a wheelbase of just 80cm, the Bullmax Stump Grinder fits through gates, side access and tight backyards, while large pneumatic tyres make crossing rough or uneven ground easy. Once you're in position, the hand brake locks the drum brake on the left wheel, anchoring the machine so you can arc the well-balanced grinding head smoothly left to right across the stump, milling it away pass by pass.

The handle offers a wide range of adjustment, so the operator can set the most comfortable working position whether the stump is sitting proud of the ground or being chased below grade. When the job is done, the handle folds over for compact storage and transport.

Whether you're clearing paddocks, tidying up after storm damage, reclaiming garden beds or working through a property full of old stumps, the Bullmax HD Stump Grinder 300mm – Honda GX390 is the reliable, low-cost way to get it done.

Key Features & Benefits:

  • 390cc Honda GX390 4-Stroke OHV Engine – Honda Australia approved, easy starting, fuel efficient and built for heavy-duty use.
  • 600mm Above to 235mm Below Ground – Removes the full stump, not just the top, so the ground can be re-used.
  • 300mm Heavy-Duty Grinding Wheel – Spins at 3,600 rpm for fast, aggressive cutting through stumps and roots.
  • 9 Carbide-Tipped Teeth – Thick carbide elements can be re-sharpened many times, keeping running costs low.
  • Centrifugal Clutch & Twin Drive Belts – Smooth engagement and reliable power transfer under load.
  • 80cm Wheelbase – Compact enough for gates, side access and tight backyards.
    Large Pneumatic Tyres – Easy transport across rough and uneven ground.
    Locking Hand Brake – Drum brake on the left wheel anchors the machine for controlled left-to-right arcing.
  • Fully Adjustable Handle – Set the most comfortable operating height, then fold it over for storage.
  • Australian Conditions Ready – Strong steel frame built to handle Australian hardwood stumps.

Applications:

  • Farms, acreage and rural properties
  • Landscaping and garden bed reclamation
  • Storm damage and tree removal clean-up
  • Preparing ground for turf, paving, fencing or construction
  • Council, contractor and hire fleet use

Specifications:

  • Model: Bullmax HD Stump Grinder 300mm (BMSG300-GX390)
  • Engine: Honda GX390, 4-Stroke Single Cylinder OHV Petrol
  • Displacement: 390cc
  • Max Torque: 26.5 Nm @ 2,500 rpm
  • Ignition: Digital CDI with variable ignition timing
  • Starter: Recoil with automatic decompression
  • Fuel Tank Capacity: 6.1 Litres
  • Grinding Wheel Diameter: 300mm
  • Wheel Speed: 3,600 rpm
  • Teeth: 9 x carbide-tipped (re-sharpenable)
  • Cutting Height Above Ground: 600mm
  • Cutting Depth Below Ground: 235mm
  • Drive System: Heavy-duty centrifugal clutch with twin drive belts
  • Wheelbase: 800mm
  • Wheels: Large pneumatic tyres
  • Braking: Locking hand brake with drum brake on left wheel
  • Handle: Fully adjustable, folds for storage
  • Warranty:
    • Engine: GX 3-Year Honda Warranty
    • Frame & Drivetrain: 12 Months Bullmax Warranty

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  • Description
  • Specifications
  • Reviews

Bullmax HD Stump Grinder 300mm – 390cc 4-Stroke Honda GX390 Engine (BMSG300-GX390)

The Bullmax HD Stump Grinder is purpose-built to make short work of tree stumps and roots without the cost of hiring a machine or calling in a contractor. Compact, well balanced and easy to manoeuvre, it grinds from 600mm above ground level right down to 235mm below grade — clearing stumps completely so you can re-turf, re-plant or build over the top.

At the heart of the machine is a heavy-duty 300mm grinding wheel fitted with 9 carbide-tipped teeth, spinning at 3,600 rpm. The thick carbide elements can be re-sharpened many times over, keeping your running costs down over the life of the machine. Power is transmitted through a heavy-duty centrifugal clutch and twin thick drive belts, delivering smooth engagement and consistent torque into the cut.

Powered by the Honda Australia approved 390cc Honda GX390 4-Stroke OHV engine, this grinder starts easily every time thanks to Honda's automatic decompression system and soft-grip recoil handle. Digital CDI ignition with variable timing delivers strong power output, low fuel consumption and clean emissions, while a cast iron cylinder sleeve and purpose-built components mean reliable long-term service under heavy workloads — plus reduced vibration and noise for the operator.

Getting to the stump is half the job. With a wheelbase of just 80cm, the Bullmax Stump Grinder fits through gates, side access and tight backyards, while large pneumatic tyres make crossing rough or uneven ground easy. Once you're in position, the hand brake locks the drum brake on the left wheel, anchoring the machine so you can arc the well-balanced grinding head smoothly left to right across the stump, milling it away pass by pass.

The handle offers a wide range of adjustment, so the operator can set the most comfortable working position whether the stump is sitting proud of the ground or being chased below grade. When the job is done, the handle folds over for compact storage and transport.

Whether you're clearing paddocks, tidying up after storm damage, reclaiming garden beds or working through a property full of old stumps, the Bullmax HD Stump Grinder 300mm – Honda GX390 is the reliable, low-cost way to get it done.

Key Features & Benefits:

  • 390cc Honda GX390 4-Stroke OHV Engine – Honda Australia approved, easy starting, fuel efficient and built for heavy-duty use.
  • 600mm Above to 235mm Below Ground – Removes the full stump, not just the top, so the ground can be re-used.
  • 300mm Heavy-Duty Grinding Wheel – Spins at 3,600 rpm for fast, aggressive cutting through stumps and roots.
  • 9 Carbide-Tipped Teeth – Thick carbide elements can be re-sharpened many times, keeping running costs low.
  • Centrifugal Clutch & Twin Drive Belts – Smooth engagement and reliable power transfer under load.
  • 80cm Wheelbase – Compact enough for gates, side access and tight backyards.
    Large Pneumatic Tyres – Easy transport across rough and uneven ground.
    Locking Hand Brake – Drum brake on the left wheel anchors the machine for controlled left-to-right arcing.
  • Fully Adjustable Handle – Set the most comfortable operating height, then fold it over for storage.
  • Australian Conditions Ready – Strong steel frame built to handle Australian hardwood stumps.

Applications:

  • Farms, acreage and rural properties
  • Landscaping and garden bed reclamation
  • Storm damage and tree removal clean-up
  • Preparing ground for turf, paving, fencing or construction
  • Council, contractor and hire fleet use

Specifications:

  • Model: Bullmax HD Stump Grinder 300mm (BMSG300-GX390)
  • Engine: Honda GX390, 4-Stroke Single Cylinder OHV Petrol
  • Displacement: 390cc
  • Max Torque: 26.5 Nm @ 2,500 rpm
  • Ignition: Digital CDI with variable ignition timing
  • Starter: Recoil with automatic decompression
  • Fuel Tank Capacity: 6.1 Litres
  • Grinding Wheel Diameter: 300mm
  • Wheel Speed: 3,600 rpm
  • Teeth: 9 x carbide-tipped (re-sharpenable)
  • Cutting Height Above Ground: 600mm
  • Cutting Depth Below Ground: 235mm
  • Drive System: Heavy-duty centrifugal clutch with twin drive belts
  • Wheelbase: 800mm
  • Wheels: Large pneumatic tyres
  • Braking: Locking hand brake with drum brake on left wheel
  • Handle: Fully adjustable, folds for storage
  • Warranty:
    • Engine: GX 3-Year Honda Warranty
    • Frame & Drivetrain: 12 Months Bullmax Warranty

SKU 100321
Brand Bullmax

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