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Robomow

Robomow RK4000 Pro

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Our Verdict: The brute force choice. When you need raw cutting power for thick grass, Robomow delivers.

The Robomow RK4000 Pro is built for serious mowing. Its 42cm (16.5″) pendulum-suspended cutting deck with offset blades delivers consistent results even on uneven terrain, handling thick grass that lighter mowers struggle with.

With GSM remote control, a 4.3″ HD touchscreen, coverage up to 4,000m², and slopes up to 45%, it’s a premium workhorse for large, demanding lawns. The unique edge-cutting technology ensures excellent boundary results, supporting up to 4 secondary zones plus 2 separate zones.

Large lawns Thick grass Overgrown yards Efficiency-focused mowing

Specifications

Coverage Up to 4,000m²
Cutting Time 110-120 minutes
Cutting Height 20-100mm
Cutting Width 420mm (16.5")
Slope Capability 45% (24°)
Navigation Boundary wire + systematic
Noise Level 64dB

Pros & Cons

A quick summary of where this model performs well and where it falls short.

Pros

  • Wide 42cm cut covers ground fast
  • Handles thick, overgrown grass
  • Edge-cutting mode
  • Robust build quality
  • Good slope handling

Cons

  • Boundary wire required
  • Louder than smaller models
  • Large and heavy
  • No wire-free option

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Robomow RK4000 Pro
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