Product Description
The Bad Boy MZ Magnum 54-Inch 24 HP Kohler Zero-Turn Riding Mower combines a heavy welded-steel chassis and cutting system with true zero-turn maneuverability in a residential mower designed for homeowners who want more substantial construction than a typical stamped-deck machine.
Power comes from a 747cc Kohler 7000 Series KT724 air-cooled gasoline engine rated at 24 HP. This is the correct current engine configuration for the 54-inch 24 HP MZ Magnum and should not be confused with the Kawasaki-powered version, which uses a different horsepower rating.
The 54-inch cutting system uses Bad Boy’s heavy formed-and-welded steel deck rather than a lightweight stamped shell. Bad Boy specifies deck steel at 3/16 inch or 7 gauge, reinforced around the edges for additional durability.
The sloped-nose deck design is engineered to improve mowing visibility and clipping flow while retaining the heavy steel construction associated with larger Bad Boy machines.
Cutting height can be adjusted from 1.5 to 4.5 inches. A foot-assisted deck-lift pedal raises the deck, while a dial-style deck-height control allows the operator to select the desired mowing position.
Drive power is handled through dual Hydro-Gear® EZT-2200 integrated drive systems. Independent control of the two drive wheels provides the maneuverability expected from a true zero-turn mower, allowing tight turns around trees, landscaping, fencing and other yard obstacles.
The drivetrain provides a maximum forward ground speed of up to 6 MPH, balancing residential mowing productivity with the compact MZ Magnum chassis.
A large 6-gallon gasoline tank reduces the need for frequent refueling during larger residential mowing jobs.
Bad Boy builds the MZ Magnum around a 2-inch × 2-inch all-steel rail frame with 3/8-inch steel front forks, giving the machine a notably substantial structural foundation for its residential classification.
Operator comfort is addressed with an adjustable cushioned seat and steering dampening system. Bad Boy states that the steering-dampening setup is designed to provide smoother response and improved maneuverability.
A flip-up floorboard provides easier access to serviceable areas underneath the operator platform, simplifying routine inspection and cleanup.
For homeowners maintaining larger residential lawns who want a mower with welded-steel construction, a powerful V-Twin engine, generous fuel capacity and true zero-turn handling, the MZ Magnum 54 provides a strong balance of productivity, durability and residential usability.
Key Features
24 HP Kohler 7000 Series Engine
The 54-inch 24 HP configuration uses the 747cc Kohler 7000 KT724 air-cooled engine.
54-Inch Cutting Deck
The 54-inch width provides substantially greater mowing coverage than smaller 42- or 48-inch residential decks.
Heavy Welded-Steel Deck
Bad Boy uses 3/16-inch or 7-gauge steel that is formed and welded rather than relying on a conventional lightweight stamped deck.
Reinforced Deck Edges
The deck includes reinforced edges and additional heavy steel sections for durability.
Dual Hydro-Gear EZT-2200 Drive
Two independent integrated hydrostatic drive systems provide zero-turn steering and variable speed control.
1.5–4.5 Inch Cutting Range
Allows the mowing height to be matched to different turf conditions.
Foot-Assisted Deck Lift
The deck can be raised using a foot pedal while the final cutting position is selected with a dial-style control.
Up to 6 MPH
Forward ground speed reaches up to 6 MPH.
6-Gallon Fuel Capacity
Large residential fuel tank reduces interruptions during longer mowing sessions.
2 × 2-Inch Steel Frame
Bad Boy builds the MZ Magnum on a substantial all-steel rail frame.
3/8-Inch Steel Front Forks
Heavy steel front forks add structural strength to the front caster system.
Adjustable Cushioned Seat
Seat position can be adjusted front-to-back for operator comfort.
Steering Dampening
Helps provide smoother steering input and more controlled maneuverability.
Flip-Up Floorboard
Provides improved access to service and cleanup areas.
Technical Specifications
| Specification | Details |
|---|---|
| Brand | Bad Boy Mowers |
| Series | MZ Magnum |
| Product Type | Residential Zero-Turn Mower |
| Engine Brand | Kohler |
| Engine Series | 7000 |
| Engine Model | KT724 |
| Engine Displacement | 747cc |
| Engine Power | 24 HP |
| Engine Cooling | Air-Cooled |
| Fuel | Unleaded Gasoline |
| Cutting Width | 54 in. |
| Deck Construction | Formed & Welded Steel |
| Deck Thickness | 3/16 in. or 7 Gauge |
| Deck Edge Reinforcement | Yes |
| Cutting Height | 1.5–4.5 in. |
| Deck Lift | Foot-Assist Manual |
| Height Adjustment | Dial Style |
| Blade Engagement | Electric |
| Transmission | Dual Hydrostatic |
| Drive System | Hydro-Gear® EZT-2200 |
| Steering | Dual Zero-Turn Control Levers |
| Forward Speed | Up to 6 MPH |
| Fuel Capacity | 6 U.S. gal. |
| Rear Tires | 18 × 9.5-8 Reaper® |
| Front Tires | 11 × 6.00-5 Smooth |
| Main Frame | 2 × 2-in. Steel Rail |
| Front Forks | 3/8-in. Steel |
| Seat | Adjustable Cushioned |
| Steering Dampening | Yes |
| Floorboard | Flip-Up |
Specifications are based on Bad Boy’s current MZ Magnum product page and configuration tool.
Engine Configuration
Engine Manufacturer: Kohler
Engine Series: 7000 Series
Engine Model: KT724
Displacement: 747cc
Rated Power: 24 HP
Cooling: Air-Cooled
Fuel: Unleaded Gasoline
Bad Boy’s current configurator identifies Kohler 7000 24 HP + 54-inch deck as an available—and currently base—MZ Magnum configuration.
Important Engine Distinction
The MZ Magnum is offered with more than one engine.
Current official options include:
Kohler
- 54″/60″
- 747cc
- 24 HP
- 7000 Series KT724
Kawasaki
- 48″/54″/60″
- 726cc
- Current main product page lists 21.5 HP FR651V
Because this listing specifically states 24 HP, the correct engine specification is the Kohler KT724, not the Kawasaki FR651V.
Cutting & Deck Configuration
Cutting Width: 54 Inches
Deck Type: Sloped-Nose Fabricated Deck
Construction: All-Steel, Formed and Welded
Steel Thickness: 3/16 Inch or 7 Gauge
Reinforced Edges: Yes
Cutting Height: 1.5–4.5 Inches
Height Control: Dial Style
Lift System: Foot-Assist Manual
Blade Engagement: Electric
Standard Clipping Method: Side Discharge
Bad Boy specifically emphasizes that the MZ Magnum uses a welded steel deck rather than the stamped deck construction commonly found on residential mowers in its price class.
Drive & Transmission Configuration
Drive Type: Dual Hydrostatic
Drive Manufacturer: Hydro-Gear®
Drive Series: EZT-2200
Steering: Independent Zero-Turn Control Levers
Maximum Forward Speed: Up to 6 MPH
Independent wheel control allows the machine to turn within its own footprint and maneuver closely around obstacles.
Chassis & Structural Configuration
Main Frame
2-inch × 2-inch all-steel rail frame
The heavy rail-frame design provides the foundation for the engine, operator platform, deck and drive components.
Front Forks
3/8-inch steel
Heavy front forks support the caster-wheel assemblies.
Floorboard
A flip-up operator floorboard allows easier access to components beneath the platform.
Tire Configuration
Rear Drive Tires
18 × 9.5-8 Reaper®
Front Caster Tires
11 × 6.00-5 Smooth
These are the tire sizes currently specified by Bad Boy for the MZ Magnum platform.
Fuel Configuration
Fuel Type: Unleaded Gasoline
Fuel Capacity: 6 Gallons
The large fuel capacity is particularly useful when mowing larger residential properties where repeated refueling would reduce productivity.
What’s Included
The standard 54-inch / 24 HP Kohler MZ Magnum configuration includes:
- 1 × Bad Boy MZ Magnum Zero-Turn Mower
- 1 × Kohler 7000 Series KT724 Engine
- 1 × 54-Inch Fabricated Steel Mower Deck
- Standard Cutting Blades
- Standard Side-Discharge Chute
- Dual Hydro-Gear EZT-2200 Drive Systems
- Foot-Assisted Deck-Lift System
- Dial-Style Deck-Height Control
- Electric Blade Engagement
- Dual Steering Levers
- Adjustable Cushioned Seat
- Steering Dampening System
- 18 × 9.5-8 Rear Reaper Tires
- 11 × 6.00-5 Front Caster Tires
- 6-Gallon Fuel System
- Flip-Up Floorboard

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