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, paint-free surfaces and out-of-reach areas
- intense cleaning of tough, paintless surfaces
- cleaning of painted or delicate surfaces
- applying detergent and cleaning solutions
Using a 187 cc (6 hp) engine, its axial cam pump delivers a pressure of up to 3300 PSI (roughly 55 times more than a standard garden hose) and a flow of up to 2.4 GPM (values claimed by the manufacturer). Together, the values result in a cleaning power of 7920 Cleaning Units.
A classic pull-start mechanism is responsible for starting the gas-powered pressure washer’s Honda GC190 engine.
A fuel tank with a maximum capacity of 0.48 gallon is used to store gasoline.
Design & Handling
The wheelbarrow design of the Simpson MS60921-S grants mobility and stability to the unit. The robust and sturdy welded steel frame offers longevity to 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.
Along with the Simpson MS60921-S itself, the package also includes a spray gun, a wand, a pressure hose, 5 nozzles and a detergent injection feature, which are discussed in further detail below.
- Soap injection: While the device doesn't feature a soap tank, detergent supply is ensured by a siphon hose. The Simpson MS60921-S features an automatic soap dilution mechanism, that will dilute your detergent with a 7:1 ratio. If a soap nozzle is attached, the device will proceed to add the detergent to the water automatically.
- 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: The included classic ergonomic spray gun and its steel wand can be easily stored in a side hook.
- Nozzles: The table below shows you the 5 included nozzles, as well as the surfaces they're the most appropriate for.
|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: The Simpson MS60921-S's handy storage area lets you store nozzles and accessories, and thus, you’ll be always prepared and have everything necessary for the job at hand.
- 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: Included with the Simpson MS60921-S are also the owner's manual (opens in a new tab) and some basic documentation to get you promptly started, along with several accessories, such as spray gun, pressure hose, soap hose, oil 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 $400 and $500. In case you are looking for a device with the highest possible power of its water stream, one of the top achievers in this price range is the Champion 100786 with a PSI of 3500.
- In comparison to other devices in the above-mentioned price range, this washer and its 2.4 GPM (gallons per minute), has one of the lower GPM values. 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 LFQ3370E, with 3 GPM.
- The 7920 Cleaning Units (PSI x GPM), of the MS60921-S sit at an average, in reference to other gas-powered units of similar price. When it comes to the highest overall cleaning power in the current price range, one of the products at the very top currently is the Lifan LFQ3370E and its 9900 Cleaning Units.
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.