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Ryobi 18V ONE+ HP Brushless 20" Self-Propelled Multi-Blade Mower Kit

Push / Walk-Behind mower · Model P11100 · Residential-duty · Battery

$499 Ryobi list price

Checked 23 Oct 2026 on the Ryobi product page. Tracking since 17 Sep 2026; no change recorded yet.

Manufacturer list price only — it excludes tax, freight, dealer setup and any local discount, and dealers set the final price.

The Ryobi 18V ONE+ HP Brushless 20 in Self-Propelled Multi-Blade Mower Kit is a residential-grade battery walk-behind mower, a quiet, low-maintenance choice for smaller yards, with a 20-inch deck and a 18 V battery. It weighs 42 lb (19.1 kg).

At a glance

Power Source

battery

Cutting Width

20 in (508 mm)

Drive Type

Self-Propelled

Weight

42 lbs (19.1 kg)

Compare this mower: Pick another Ryobi push / walk-behind or pick from every push / walk-behind mower or quick compare: vs 18V ONE+ 13 in Push Mower · vs 18V ONE+ 13 in Push Mower Kit · vs 18V ONE+ HP Brushless 16 in Push Mower

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Deck 20 in (508 mm) · 20 V battery

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Greenworks 48V (24V x 2) 20 in Cordless Battery Push Mower 3PC Combo Kit

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Ryobi 18V ONE+ HP Brushless 20 in Self-Propelled Mower Kit

Deck 20 in (508 mm) · 18 V battery

Weight 57 lbs (25.8 kg) (this model: 42 lbs (19.1 kg))List price $439 (this model: $499)

Why: Same class: push / walk-behind · Same 20 in deck · Battery powered, like this model · Residential-duty, like this model · 18 V battery (this model: 18 V) · Also by Ryobi
Compare with the 18V ONE+ HP Brushless 20 in Self-Propelled Multi-Blade Mower Kit ›
Kress 40 V lawn mower

Deck 20 in (508 mm) · 40 V battery

List price $400 (this model: $499)

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Chosen by stated rules, not opinion: same class, a deck within 2 in of this one, the same kind of power and a compatible duty class, then the closest power, weight and price, with other makers preferred. Figures are the manufacturers’ published ones; nothing is estimated.

Engine

Ryobi 18V ONE+ HP Brushless 20 in Self-Propelled Multi-Blade Mower Kit engine specifications
Power Source	battery
Fuel Type	Battery / Electric

Electrical

Ryobi 18V ONE+ HP Brushless 20 in Self-Propelled Multi-Blade Mower Kit electrical specifications
Voltage	18 V

Deck

Ryobi 18V ONE+ HP Brushless 20 in Self-Propelled Multi-Blade Mower Kit deck specifications
Cutting Width	20 in (508 mm)
Min Cut Height	1.5 in (38 mm)
Max Cut Height	4 in (102 mm)
Discharge	Mulching, Bagging & Side Discharge

Drive

Ryobi 18V ONE+ HP Brushless 20 in Self-Propelled Multi-Blade Mower Kit drive specifications
Drive Type	Self-Propelled

Dimensions

Ryobi 18V ONE+ HP Brushless 20 in Self-Propelled Multi-Blade Mower Kit dimensions specifications
Weight	42 lbs (19.1 kg)

General

Ryobi 18V ONE+ HP Brushless 20 in Self-Propelled Multi-Blade Mower Kit general specifications
Warranty	3 yr

Similar models

Other push / walk-behind mowers with comparable specs — including other brands — that buyers cross-shop with the 18V ONE+ HP Brushless 20 in Self-Propelled Multi-Blade Mower Kit.

20-in 125cc Gas Push Mower Craftsman · 20 in (508 mm)

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RM 453 T Gasoline Lawn Mower STIHL · 20.1 in (511 mm)

Specs verified against the retailer listing on Jun 6, 2026 — martdiscover.com.

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

What the specs work out to

Figures MowerFacts computes from Ryobi’s own numbers — not published by the manufacturer.

Gate & trailer fit

32 in gateFits
36 in gateFits
48 in gateFits

Needs at least 26 in of clearance (estimated).

Fit uses the deck width plus 6 in for the discharge chute, because Ryobi doesn't publish an overall width — measure before buying if a gate is tight.

Ryobi 18V ONE+ HP Brushless 20 in Self-Propelled Multi-Blade Mower Kit questions

What size deck is on the Ryobi 18V ONE+ HP Brushless 20 in Self-Propelled Multi-Blade Mower Kit?

The Ryobi 18V ONE+ HP Brushless 20 in Self-Propelled Multi-Blade Mower Kit has a 20-inch (508 mm) cutting deck.

How much does the Ryobi 18V ONE+ HP Brushless 20 in Self-Propelled Multi-Blade Mower Kit weigh?

The Ryobi 18V ONE+ HP Brushless 20 in Self-Propelled Multi-Blade Mower Kit weighs 42 lb (19.1 kg) as specified by Ryobi.

How much does the Ryobi 18V ONE+ HP Brushless 20 in Self-Propelled Multi-Blade Mower Kit cost?

Ryobi's published list price is $499, checked 23 October 2026. That excludes tax, freight, dealer setup and any local discount — dealers set the final price.

What is the Ryobi 18V ONE+ HP Brushless 20 in Self-Propelled Multi-Blade Mower Kit built for?

Residential-duty push / walk-behind mower. Built for home-lawn use.

Source: Ryobi (manufacturer) · archived copy