400 MidMount Zero-Turns
Riding mowers starting at $18,955.All prices USD. All prices are Manufacturer's Suggested Retail Price (MSRP). MSRP excludes tax, dealer fees, and optional equipment. Models may be pictured with optional equipment.
Our full-featured, top-of-the-line MidMount™ mower series can be fitted with a 72-inch deck and powered by the legendary power of the Kubota® Clean Diesel engine or the Vanguard® BIG BLOCK™ gas engine.
Design-matched G3 transmission.
The efficient design-matched G3 transmission ensures smooth, zero-turn performance in all of our 400 Series MidMount riding lawn mowers.
The robust G3 hydrostatic transmission is design-matched to the power unit, ensuring smooth, responsive control while delivering more power to the drive tires and cutting deck. The unit features a 21-cc capacity with piston pumps and high-torque Parker wheel motors. The CoolFan™ pump cooling system and 7 micron absolute filter provide a clean, cool internal environment and extend the transmission fluid change interval to up to 1,000 hours.
Industry-leading engine options.
The 400 Series efficient diesel and powerful gas engine options make these zero-turns two of the top choices for commercial mowing.
The 400D mower is powered by a 1.3L, 3-cylinder, liquid-cooled Kubota® Clean Diesel horizontal crankshaft engine. The engine is Tier 4 compliant and is horizontally mounted to provide longer service life. The 440 mower is powered by a 993-cc, V-twin, air-cooled Vanguard® BIG BLOCK™ EFI gasoline engine with Electronic Throttle Control. The engine is horizontally mounted to provide longer service life.
Nothing compares to a DuraMax Deck.
We didn't settle for flimsy, stamped steel decks. We spent years building the toughest, most durable deck around.
All of our mower decks—standard and DuraMax®—are made from the same robotically welded, heavy-gauge, formed steel and are far superior to the flimsy plastic or stamped-steel construction you find elsewhere. We've added an extra layer of heavy-gauged formed steel to our DuraMax deck that sits over the deck’s leading edge for even more durability and impact protection. The geometry of the formed steel is seven times stronger than a strip of flat steel. Our extra deep, 5.5-inch decks are made from years of innovative airflow research and feature specially-designed cutting chambers that deliver enhanced airflow for a better cut quality. Spindles are anchored to double layers of robotically-welded, formed steel in a 6-bolt pattern to spread the force of impact for greater strength in commercial applications. Triple-strength decks are nearly 1-inch thick in stress zones with durable Sentry™ spindles mounted on spindle planes that are more than 25% thicker than 1/4 inch. Spindle guards shield the housing and seal lower bearings from grass wrap and dirt ingestion. High-impact, high-rotational-speed bearings with durable seals extend spindle life. Designed to let you change the way you mow without changing decks, Grasshopper decks let you easily convert between standard Side-Discharge, Down-Discharge Mulching, and PowerVac Collection. Easily reach belts and grease points, plus make quick, simple work out of your routine zero-turn mower maintenance. Every deck comes with a built-in multi-ply rubber striping belt that combs the grass into crisp uniform stripes as you mow without cumbersome rollers that catch obstacles or gouge turf.
Other reasons to buy.
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440 EFI
Starting at $18,955993-cc, V-Twin, Air-Cooled, Vanguard® BIG BLOCK™ Horizontal Crankshaft Gasoline Engine
61", 72" Deck sizesG3 Hydrostatic Transmission7.2 Max Acres Per HourDuraMax DeckGasBelt Driven12 gal. Fuel capacity
400D
Starting at $25,0501.3L, 3-cylinder, Liquid-Cooled Kubota® Clean Diesel Horizontal Crankshaft Engine
61", 72" Deck sizesG3 Hydrostatic Transmission7.2 Max Acres Per HourDuraMax DeckDieselBelt Driven12 gal. Fuel capacity
Featured Add-Ons.
Unique four-spindle design evenly distributes loads of clippings out the back of the mower and away from the operator and engine.
Trim ultra close to buildings, easements, and landscaping without worrying about scraping and damaging your deck—or the property you're mowing.
Made from diamond-plated aluminum, this canopy mounts to the ROPS for added sun protection and all-day comfort.
Airless tires that perform like pneumatic tires but without the inconvenience of flats. These tweels are available as turf drive tires, tail wheels, and deck wheels.
Summer Sizzler Sale
Save up to $800 on a new MidMount, FrontMount, or OutStander Stand-On mower.
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Questions about the 400 Series?
FAQs about Grasshopper 400 Series MidMount zero-turn lawn mowers.
The Grasshopper 400 Series stands out from competitive MidMount mowers by offering top-tier commercial power, a design-matched G3 transmission, 61-inch or 72-inch DuraMax deck options, and gas or Kubota Clean Diesel engine choices. For operators comparing premium zero-turn mowers, these are built for maximum productivity, comfort, and long-term durability.
These zero-turn riding mowers are flat-out fast. They can mow up to 7.2 acres per hour, depending on deck size, terrain, and mowing conditions. Most importantly, you get all of that speed without sacrificing on quality of cut.
The 400 Series includes premium comfort features such as a Premier Suspension Seat, Ultimate Operator Station, hydraulically dampened steering levers, and QuikAjust adjustable levers. These features help reduce fatigue during long commercial mowing days.
Available 400 Series add-ons include a Dedicated 4X Rear Discharge™ deck, Speed-Trimming™ heavy-duty roller kit, aluminum sunshade canopy, Michelin® X® Tweel™ airless turf tires, and much more. These upgrades help operators improve productivity, comfort, and mowing performance.
The Grasshopper 400 Series is available with a Vanguard® BIG BLOCK™ gas engine or a Kubota® Clean Diesel engine. These commercial engine options give operators the torque, power, and reliability needed for tough mowing conditions.