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John Deere S120 Lawn Tractor β€” 22 HP V-Twin, 42 in. Deck
  • John Deere S120 Lawn Tractor β€” 22 HP V-Twin, 42 in. Deck
  • John Deere S120 Lawn Tractor β€” 22 HP V-Twin, 42 in. Deck
  • John Deere S120 Lawn Tractor β€” 22 HP V-Twin, 42 in. Deck
  • John Deere S120 Lawn Tractor β€” 22 HP V-Twin, 42 in. Deck
John Deere S120 Lawn Tractor β€” 22 HP V-Twin, 42 in. Deck

John Deere S120 Lawn Tractor β€” 22 HP V-Twin, 42 in. Deck

Sale price  $2,899.00 Regular price  $3,199.00 SAVE 9%
  • 22 HP V-Twin power
  • Precision Edgeβ„’ 42-inch deck
  • Hydrostatic transmission control
  • Optimized airflow for clean cuts

12K+ Lawns Transformed

4.8

Engine & Performance

The John Deere S120 steps up from the base S100 Series with a stronger V-twin engine and a few extra creature comforts, while keeping the same straightforward hydrostatic operation homeowners rely on. It's one of the most frequently purchased tractors in the 100 Series lineup, striking a balance between price and everyday capability.

Why owners choose the S120

  • 22 HP V-twin engine β€” more torque than the base S100 for tougher grass and larger yards.
  • 42 in. Edge mower deck β€” a clean, even cut suited to most residential lots.
  • Cruise control β€” hold a consistent speed on long, straight passes.
  • MowerPlus app compatible β€” track fuel level, battery health, and mowing history from your phone.
  • CargO Mount system β€” quick-attach points for a sun canopy, rear bagger, or other accessories.

Specifications

Engine power 22 HP (16.4 kW) V-Twin
Deck size 42 in. (107 cm) Edge deck
Transmission Tuff Torq TLT200 hydrostatic
Top speed 5.5 mph (8.9 km/h)
Fuel tank 2.4 gal (9.1 L)
Warranty 2-year/120-hour bumper-to-bumper

Build Quality & Care

The S120 features a heavy-duty steel frame and a cast-iron front axle for long-term durability. Maintain the Precision Edge deck by clearing grass clippings after use and sharpening the dual blades annually to ensure the cleanest slice.

Delivery & Setup

We provide premium local delivery within the United States. Your tractor arrives fully assembled, inspected, and ready to work. Our delivery team will perform a basic controls orientation upon arrival.
John Deere S120 Lawn Tractor β€” 22 HP V-Twin, 42 in. Deck

John Deere S120 Lawn Tractor β€” 22 HP V-Twin, 42 in. Deck

Regular price  $3,199.00
Sale price  $2,899.00 SAVE 9%

Stop tearing your grass and start manicuring your estate.

Most residential mowers use low-torque engines that bog down in thick patches, resulting in a jagged tear rather than a clean slice. This leaves your lawn with brown, unhealthy tips that ruin your curb appeal.

The Ragged Edge Problem

Dull blades and inconsistent engine speeds rip the grass blade, causing stress and invited disease across your entire yard.

Inconsistent Power Output

Single-cylinder engines often struggle under load, leaving uneven 'Mohawk' strips that require a second pass.

Subpar Deck Design

Standard decks lack the airflow needed to lift grass before the cut, resulting in a flat, neglected look instead of crisp stripes.

The John Deere S120 was engineered to eliminate these frustrations with commercial-grade precision.

The Professional Fleet

Choose the precision tool that fits your acreage and ambition.

John Deere S120 Lawn Tractor β€” 22 HP V-Twin, 42 in. Deck Sale

John Deere S120 Lawn Tractor β€” 22 HP V-Twin, 42 in. Deck

$2,899.00 $3,199.00
View Details
John Deere S120 Lawn Tractor β€” 22 HP V-Twin, 42 in. Deck Sale

John Deere S120 Lawn Tractor β€” 22 HP V-Twin, 42 in. Deck

$2,899.00 $3,199.00
View Details
A Honda HRN216VKA lawn mower on a perfectly striped, professional-quality residential lawn in a sunny suburban backyard.

The S120 delivers the golf course finish you deserve.

By combining a high-torque V-Twin engine with our proprietary Precision Edgeβ„’ cutting system, the S120 ensures every blade of grass is cut cleanly and evenly, promoting a deeper green and healthier growth.

βœ” Consistent blade speed through thick turf

βœ” Precision Edgeβ„’ deck for superior airflow

βœ” Hydrostatic drive for smooth speed adjustments

βœ” Side-by-side pedals for effortless control

βœ” 13 cutting heights for seasonal precision

Trusted by Yard Perfectionists

5.0 out of 5
David Brown review photo

I used to have to mow twice to get a clean look. With the S120, I get perfect stripes in one pass. It has completely changed how my yard looks in Houston.

David Brown
Sarah Williams review photo

Power is everything. This tractor doesn't stall in the wet grass we get here in Seattle. The cut is clean and the engine is remarkably quiet.

Sarah Williams
Ashley Miller review photo

The frame and front axle are much beefier than the box-store mowers I've owned before. This is a real machine for people who care about their property.

Ashley Miller
Robert Davis review photo

My neighbors in Phoenix keep asking who my landscaper is. I tell them it's just me and my S120. The deck height adjustment is dead accurate.

Robert Davis
James Wilson review photo

The 30-second oil change is a game changer. I actually look forward to maintenance because John Deere made it so logical and straightforward.

James Wilson

Neighborhood Authority Reviews

See how the S120 delivers professional results across the country.

M

Michael Johnson

The S120 is the best investment I've made for my home. The 42-inch deck is perfect for maneuvering around my landscaping while still covering ground quickly.

S

Sarah Williams

The hydrostatic transmission is so smooth. I can slow down for tight corners and speed up on the straightaways without any jerking or stalling.

D

David Brown

I've owned several tractors over the years, but the cut quality of the John Deere S120 is on another level. No more ragged tips or brown spots.

A

Ashley Miller

I love how easy it is to start. The V-Twin engine turns over immediately every time, and the seat is comfortable enough for my two-acre lot.

R

Robert Davis

Shipping was fast and the tractor arrived ready to mow. I was out in the yard within twenty minutes of the delivery truck leaving.

J

James Wilson

This machine is built for precision. You can tell the deck was designed by people who actually understand how grass grows. It's fantastic.

M

Michael Johnson

The S120 is the best investment I've made for my home. The 42-inch deck is perfect for maneuvering around my landscaping while still covering ground quickly.

S

Sarah Williams

The hydrostatic transmission is so smooth. I can slow down for tight corners and speed up on the straightaways without any jerking or stalling.

D

David Brown

I've owned several tractors over the years, but the cut quality of the John Deere S120 is on another level. No more ragged tips or brown spots.

A

Ashley Miller

I love how easy it is to start. The V-Twin engine turns over immediately every time, and the seat is comfortable enough for my two-acre lot.

R

Robert Davis

Shipping was fast and the tractor arrived ready to mow. I was out in the yard within twenty minutes of the delivery truck leaving.

J

James Wilson

This machine is built for precision. You can tell the deck was designed by people who actually understand how grass grows. It's fantastic.

The Precision Advantage

John Deere S120

Precision Edgeβ„’ steel deck

22 HP V-Twin high torque

Hydrostatic smooth drive

30-second oil change system

Standard Mowers

Thin stamped metal decks

Single-cylinder underpowered engines

Jerky manual or belt drive

Messy 30-minute oil changes

Expert Support for Your S120

  • Your S120 is delivered via our local white-glove service. It arrives fully assembled, fueled, and inspected so you can begin mowing immediately.

  • Yes, the 22 HP V-Twin engine and hydrostatic transmission provide excellent traction and power for typical residential slopes and uneven terrain.

  • The John Deere Easy Change system allows you to swap the oil and filter in one step without tools or mess, making maintenance incredibly simple.

  • Yes, the S120 includes a 2-year or 120-hour bumper-to-bumper warranty, supported by our nationwide network of certified service centers.

  • The 42-inch deck is ideal for properties up to 2 acres, providing a balance of fast coverage and the ability to navigate through garden gates.

  • The S120 runs on standard unleaded gasoline. We recommend using fresh fuel with a stabilizer to maintain the fuel system's peak performance.

All Reviews