The Simpson MegaShot MS60921-S is a gas-powered pressure washer offering a maximum water pressure of 3300 PSI and flow of 2.4 GPM. (Read full specs)
Zoom on the Simpson MS60921-S
In a nutshell, the Simpson MS60921-S is a heavy duty, commercial pressure washer, which not only offers an all-around versatile cleaning experience, but that also allows:
- spot cleaning of hard, unpainted surfaces and high-reach cleaning
- intense cleaning of hard, unpainted surfaces
- cleaning of painted and fragile surfaces
- use of detergent and cleaning solutions
Its axial cam pump, which utilizes a 187 cc (6 hp) engine, may deliver a pressure of up to 3300 PSI (almost 55 times more than a standard garden hose) and a flow of up to 2.4 GPM. These values correspond to a cleaning power of 7920 Cleaning Units.
The Honda GC190 engine of this gas-powered pressure washer relies on an old-school pull-start mechanism to get started.
Gasoline is stored in a fuel tank with a maximum capacity of 0.48 gallon.
Design & Handling
The wheelbarrow design of the Simpson MS60921-S grants mobility and stability to the unit. The robust welded steel frame guarantees longevity of the assembly. The handle adds to the MS60921-S convenience of transport.
The majority of users will be able to maneuver this unit easily, it only weighs 71 lbs. Its 187 cc Honda GC190 engine and welded steel frame all add up to a substantial part of that weight. However, the two 10" pneumatic wheels allow the MS60921-S to be easily manipulated and maneuvered.
The Simpson MS60921-S's package includes a spray gun, a wand, a pressure hose, 5 nozzles and a detergent injection feature, with a more detailed description below.
- Soap injection: While the device doesn't feature a soap tank, detergent supply is ensured by a siphon hose. The Simpson MS60921-S includes an automatic soap dilution mechanism, which will dilute the detergent using a 7:1 ratio. The detergent is automatically added to the water when a soap nozzle is connected.
- Pressure hose: The 25 ft ⌀1/4" high-pressure hose, which is included with the device, can be stored neatly on the unit itself when idle, using a set of convenient hooks.
- Spray gun and wand: Both the classic ergonomic spray gun and its steel wand may be conveniently stored in a side hook.
- Nozzles: The 5 nozzles included with the device, and the respective surfaces which they’re the most suitable for, are shown in the following table.
|Concrete, brick, masonry||Use with caution||Suitable||Suitable||Suitable||Suitable|
|Siding, gutters, house||Not recommended||Use with caution||Use with caution||Suitable||Suitable|
|Fencing, deck, patio||Not recommended||Use with caution||Use with caution||Suitable||Suitable|
|Lawn equipment, boat, RV||Not recommended||Use with caution||Use with caution||Use with caution||Suitable|
Note: The shape of the nozzles above is for illustration purposes only and may differ.
Red cross: Not recommended. Green check: Suitable. Orange check: Use with caution.
- Onboard storage: Stay prepared for any job with Simpson MS60921-S's handy storage area, which allows you to neatly store any nozzles and accessories which you may need for the job.
- Safety: Safety of operation is enhanced by a trigger lock mechanism (which prevents accidental operation) and a thermal relief valve (which helps to prevent internal pump damage).
- Accessories: On top of an owner's manual (opens in a new tab) and the usual documentation to get you swiftly started, the Simpson MS60921-S also comes with pressure hose, spray gun, oil, soap hose and wand.
- Emissions: The Simpson MS60921-S is EPA-approved and CARB-compliant. This means that this pressure washer can be bought and sold in each of the 50 states, including California.
The Simpson MS60921-S's performance versus other pressure washers
The following charts are provided to give you an idea of how the key specs of the Simpson MS60921-S compare to similarly priced pressure washers.
- With 3300 PSI, the Simpson MS60921-S ranks as one that can reach an above average pressure, amongst the gas-powered products that cost between $300 and $400. If the highest possible power of the water stream is your priority, one of the champions in this price range is the Stanley SXPW3425 with 3400 PSI.
- In its respective price range, the water flow of this washer, 2.4 GPM (gallons per minute), ranks as average. If being able to rinse away debris as efficiently as possible is your priority, one of the products with the highest GPM in this price range is the Lifan LFQ3370, with 3 GPM.
- In comparison to other gas-powered units of similar price, the 7920 Cleaning Units (PSI x GPM) of the MS60921-S are average. If you are after the highest overall cleaning power, the Lifan LFQ3370 with its 9900 Cleaning Units is one of the products that can achieve the highest cleaning efficiency in this price range.
As you can see from this interactive chart, when compared to other gas-powered washers between 7500 and 8000 Cleaning Units, the Simpson MS60921-S is on the average side of the price range.
Therefore, this pressure washer nicely fits in the expected budget for this kind of cleaning power.
Features and Specifications
|Engine||187 cc 6 HP Honda GC190 4-stroke OHC|
|Other model numbers||60922|
|Soap injection||Via siphon hose|
|Nozzles||0°, 15°, 25°, 40°, Soap|
|Quick connect nozzles||Yes|
|Hose||25 ft, ⌀1/4|
(D x W x H)
|Approx. 23.5 x 21.3 x 22.8 in|
|Wheels||2 wheels, ⌀10", pneumatic|
|Included accessories||Oil, steel wand, spray gun, high pressure hose, soap hose, 5 nozzles|
|Security||Trigger lock and thermal relief valve|
Unlike many websites, we did our best to research each of the specs above. That being said, we are not immune to making the occasional mistake or omission. Should you notice any missing or incorrect values, don't hesitate to suggest improvements so we can address the issue.
Simpson has over 50 years of experience making quality products for the outdoor power equipment industry. Part of the FNA Group based in Pleasant Prairie, Wisconsin since 2006, they are a vertically-integrated company, meaning most of the parts and accessories are manufactured and assembled by them. Their manufacturing facilities are international. With the company motto "Driven by Performance", Simpson continues to offer a great variety of pressure-washing systems for the homeowner or the professional contractor.
The Simpson MS60921-S is covered under a warranty for up to 5 years. This warranty may be limited and may not cover all parts of the unit.
For more information about the warranty of Simpson pressure washers, please contact the Simpson Customer Support: 1-877-362-4271.