The AR591+ Essentials Kit combines serious performance with upgraded ergonomics, giving you pro-level control and durability in one complete kit.
The AR591+ isn’t your average pressure washer - it’s a custom-tuned, quality-built unit with pro-level features, serious performance, and durability that’s unheard of at this price point, and our Essentials Upgrade Kit only pushes this even further.
Our custom-tuned Annovi Reverberi 591+ has surprised us in every way. It’s “supposed” to be an enthusiast unit, but it’s packed with pro-level features that rival even some professional pressure washers priced well over $1,000.
Let’s start with the heart of the machine - the brass pump. Yes, this is a genuine brass pump head with 3-axial pistons and a wobble plate drive. Why is this such a big deal? Because most pressure washers at this price point are plagued with aluminium pumps - lighter, sure, but much less durable. They’re prone to cracks, leaks, seizing, and heat damage. Brass pumps are the complete opposite: stronger, serviceable, rebuildable, and designed to last long-term.
And it doesn’t stop there. The AR591+ also features high-quality stainless steel pistons, whereas many comparable units settle for aluminium pistons or mixed-metal composites - even on more expensive machines. These pistons move back and forth thousands of times per minute, so having stainless steel means better resistance to warping, corrosion, and degradation, even under high PSI.
Now, putting this to the test - this is where the AR591+ really separates itself. While most machines in this range inflate their specs, the AR591+ delivers a tested 8.2 L/min of water flow at a working pressure of 1200 PSI, using a standard 10 amp plug. That’s exactly what you want for detailing - higher water flow means faster rinsing and thicker, more consistent foam. Pair this with one of our foam cannons for unbeatable performance.
The Essentials Kit transforms the AR591+ - delivering a serious upgrade in ergonomics, durability, and efficiency. It replaces the standard long gun and fittings with a compact MTM SG35 short gun featuring a built-in swivel to eliminate hose tangling, a ventilated insulated lance for improved comfort and heat resistance, and a full set of stainless steel quick-connect nozzles. These enhancements don’t just make the machine easier to handle - they offer a more refined, durable, and professional-grade setup, allowing faster accessory changes, smoother operation, and a system built to last.
Combine this with the brushless induction motor and True Total Stop System (TSS) and you’ve got one of the highest spec’d, pro-level “enthusiast” units on the market. But why does TSS matter? Most machines in this range only cut off the motor, leaving the system under pressure - which builds heat and wears out seals faster. True TSS, like on the AR591+, completely unloads the pressure inside the pump, reducing strain and prolonging the machine’s lifespan.
The AR591+ Essentials Kit takes the standard all-in-one system - with its integrated trolley, hose reel, pressure gauge, and inlet filter - and upgrades the parts you handle the most. Quick-connect fittings, durable stainless steel components, and a compact gun/lance setup giving you more control, customisation, and comfort every time you wash.
All this is backed by our Waxit Enthusiast+ AR Warranty, which includes a 3-year manufacturer warranty (covering defects in materials and workmanship) and a 1-year accessory warranty — giving you peace of mind.
Overall, the AR591+ Essentials Kit isn’t just great value — it’s in a class of its own. With a genuine brass pump, stainless steel pistons, tested 8.2 L/min water flow, and premium features throughout, it punches far above its weight. Pair it with the Essentials Kit, and you’ll unlock even more usability, control, and satisfaction from an already exceptional machine.
If you’re tired of warranty claims, cheap aluminium pumps, and just want a pressure washer that delivers serious performance without breaking the bank — the AR591+ Essentials Kit is almost impossible to look past.