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List prices are the manufacturer’s published figures, re-checked daily; they exclude tax, freight and dealer setup.

A side-by-side reference of each model's stated specifications. MowerFacts doesn’t give opinions: where a published, spec-derived rule can separate machines we mark a Data Pick and show the rule; here, read the values and decide what fits your needs.

Best suited for

What each model is built for, from its duty class and key specs. This is a neutral reference — MowerFacts does not rank one model above another.

  • Ryobi 40V HP Brushless 20 in Self-Propelled Multi-Blade Mower Kit — residential: typical home lawns; 20-inch deck; battery (no fuel or engine maintenance)
  • Worx 40V 21'' brushless lawn mower — residential: typical home lawns; 20-inch deck; battery (no fuel or engine maintenance)
What’s different? The 4 differences that matter most, from the published figures.
  1. 40V HP Brushless 20 in Self-Propelled Multi-Blade Mower Kit runs on Battery / Electric; 40V 21'' brushless lawn mower runs on Lithium-Ion. Fuel type sets what you buy and store; it is not a measure of power.
  2. 40V HP Brushless 20 in Self-Propelled Multi-Blade Mower Kit has Mulching, Bagging, and Side Discharge discharge; 40V 21'' brushless lawn mower has Bag, mulch, rear-discharge discharge.
  3. 40V HP Brushless 20 in Self-Propelled Multi-Blade Mower Kit cuts from 1 in (25 mm) to 4 in (102 mm); 40V 21'' brushless lawn mower cuts from 1.5 in (38 mm) to 4 in (102 mm). The cut-height range is the shortest and tallest cut the deck offers. Most lawns are kept well inside it.
  4. 40V HP Brushless 20 in Self-Propelled Multi-Blade Mower Kit weighs 52 lbs (23.6 kg); 40V 21'' brushless lawn mower weighs 53 lbs (24.1 kg), a 1 lbs difference. Operating weight bears on trailer payload, ramps and soft turf. On its own it says nothing about build quality. What 40V HP Brushless 20 in Self-Propelled Multi-Blade Mower Kit's weight means for a trailer ›
what isn’t comparable

Not comparable

  • Battery Capacity: not published for 40V HP Brushless 20 in Self-Propelled Multi-Blade Mower Kit.
  • Deck Material: not published for 40V HP Brushless 20 in Self-Propelled Multi-Blade Mower Kit.
  • Price: 40V 21'' brushless lawn mower is dealer quote only.

Verified means each manufacturer publishes the figure. A bigger number is only a bigger number; nothing here says which machine is better. The full specification table is below.

Which is faster on your property? › Measure your lawn once and MowerFacts times all 2 against it.

Add another (2 more fit): every push / walk-behind mower · more Ryobi · more Worx
Side-by-side specifications: Ryobi 40V HP Brushless 20 in Self-Propelled Multi-Blade Mower Kit vs Worx 40V 21'' brushless lawn mower
Spec 40V HP Brushless 20 in Self-Propelled Multi-Blade Mower Kit
Ryobi · Push / Walk-Behind
40V 21'' brushless lawn mower
Worx · Push / Walk-Behind
List price $599dealer quote
Engine
Power Source battery battery
Fuel Type Battery / Electric Lithium-Ion
Electrical
Voltage 40 V 40 V
Battery Capacity — 5 Ah
Deck
Cutting Width 20 in (508 mm) 20 in (508 mm)
Min Cut Height 1 in (25 mm) 1.5 in (38 mm)
Max Cut Height 4 in (102 mm) 4 in (102 mm)
Deck Material — Polymer
Discharge Mulching, Bagging, and Side Discharge Bag, mulch, rear-discharge
Cut Positions — 7
Drive
Drive Type Self-Propelled —
Dimensions
Weight 52 lbs (23.6 kg) 53 lbs (24.1 kg)
General
Warranty 5 yr 5 yr
Bagger Capacity 2 bu (70.5 L) 2 bu (70.5 L)

40V HP Brushless 20 in Self-Propelled Multi-Blade Mower Kit: Specs verified against the manufacturer spec sheet on Jun 6, 2026 — ryobitools.com.

40V 21'' brushless lawn mower: Specs verified against the manufacturer spec sheet on Jun 6, 2026 — worx.com.

Independent reference database. Specs compiled from manufacturer sources and normalized for comparison; verify with the manufacturer or dealer before purchase.

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