Ryobi 40V HP Brushless 21" Self-Propelled Mower
Push / Walk-Behind mower · Model RY40HPLM01B · Residential-duty · Battery
$449 Ryobi list price
Manufacturer list price only — it excludes tax, freight, dealer setup and any local discount, and dealers set the final price.
The Ryobi 40V HP Brushless 21 in Self-Propelled Mower is a residential-grade battery walk-behind mower, a quiet, low-maintenance choice for smaller yards, with a 21-inch deck and a 40 V battery. It weighs 74.8 lb (33.9 kg).
Also sold as: 40V HP Brushless 21 in Self-Propelled Mower Kit (Kit (battery & charger included))
At a glance
Compare similar mowers See how this mower compares with machines of a similar size and purpose.
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
| Power Source | battery |
|---|---|
| Fuel Type | Battery / Electric |
Electrical
| Voltage | 40 V |
|---|
Deck
| Cutting Width | 21 in (533 mm) |
|---|---|
| Min Cut Height | 1 in (25 mm) |
| Max Cut Height | 4 in (102 mm) |
| Discharge | Mulching, Bagging, Side Discharge |
Drive
| Drive Type | Self-Propelled |
|---|
Dimensions
| Weight | 75 lbs (33.9 kg) |
|---|
General
| Bagger Capacity | 2 bu (70.5 L) |
|---|---|
| Warranty | 5 yr |
Similar models
Other push / walk-behind mowers with comparable specs — including other brands — that buyers cross-shop with the 40V HP Brushless 21 in Self-Propelled Mower.
Specs verified against the manufacturer spec sheet on Jun 6, 2026 — ryobitools.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 27 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 40V HP Brushless 21 in Self-Propelled Mower questions
What size deck is on the Ryobi 40V HP Brushless 21 in Self-Propelled Mower?
The Ryobi 40V HP Brushless 21 in Self-Propelled Mower has a 21-inch (533 mm) cutting deck.
How much does the Ryobi 40V HP Brushless 21 in Self-Propelled Mower weigh?
The Ryobi 40V HP Brushless 21 in Self-Propelled Mower weighs 75 lb (33.9 kg) as specified by Ryobi.
How much does the Ryobi 40V HP Brushless 21 in Self-Propelled Mower cost?
Ryobi's published list price is $449, checked 23 October 2026. That excludes tax, freight, dealer setup and any local discount — dealers set the final price.
What is the Ryobi 40V HP Brushless 21 in Self-Propelled Mower built for?
Residential-duty push / walk-behind mower. Built for home-lawn use.
Source: Ryobi (manufacturer) · archived copy