GX-E-5K2 PCP Air Compressor 5800psi 110V 1200W - Fast, Reliable

In this review the GX-E-5K2 proves itself as a purpose-built air compressor for serious PCP shooters and paintball players who want fast, repeatable fills at high pressure. The single biggest reason to buy is its dual piston, four-stage compression system which cuts fill times dramatically compared with typical single-piston units while offering an automatic stop and moisture management so users can set a target pressure and walk away.

Key Features

• 2 Pistons & 4 Stages: The dual-piston, four-stage compression reduces fill time so a rifle tank can reach full pressure in minutes rather than tens of minutes.
• 1200W Motor, 5800psi Capacity: A powerful motor supports fills up to 40MPa/5800psi so it can handle large PCP, paintball and many scuba-style tanks for fast top-ups.
• Water + Fan Cooling System: Built-in water pump, radiator and fan keep temperatures in check for longer continuous use and a visible water level makes maintenance straightforward.
• Auto-Stop & Moisture Filter: Twin indicator arms let you set a stop pressure; the unit shuts off automatically and bleeds moisture during and after fills.
• Rapid Fill Rates: Concrete timings from the manufacturer show very quick fills (for example, 0.5L from 1000psi to 4500psi in about 2.5 minutes), making it practical for multiple fills in a session.
• Grease Injection System: A built-in grease tank and recommended routine help maintain the pump; follow initial run guidance to avoid excess grease in early hours.

Who It's For

The GX-E-5K2 is aimed at dedicated PCP rifle owners, paintball teams and hobbyists who need reliable, fast on-site filling and who will appreciate the higher continuous duty capability and cooling system for repeated use. It is especially useful for those who want an automatic shutoff and an integrated moisture filter to reduce the fuss of manual monitoring.

Users who should look elsewhere are those who need a fully certified scuba compressor for breathing-grade fills or buyers wanting a featherweight, ultra-quiet travel unit. The model is relatively heavy and customers report mixed noise impressions, so people prioritizing near-silent operation or ultra-portability should consider other options.

Pros & Cons

Pros

• Very fast fill times thanks to the patented dual-piston four-stage compression.
• Built-in cooling and water pump allow long continuous runs up to the published 10 hours.
• Auto-stop setting and moisture bleed make unattended fills convenient and cleaner for guns.
• Robust build quality; customers note it feels solid and substantial.

Cons

• Noise level varies by user; some find it loud during operation which may be a concern for indoor use.
• Not certified for scuba breathing fills; extra safety parts are required if pushing above 5000psi.

Specifications

Brand	Anbull
Model	GX-E-5K2 (5K2 dual cylinders)
Max Pressure	40MPa / 5800psi
Power	110V, 1200W
Compression	2 pistons, 4 stages (patent US 9,726,165 B2)
Cooling	Water pump + radiator + cooling fan
Continuous Work	Up to 10 hours

Our Verdict

The GX-E-5K2 is a solid choice for shooters and teams who need rapid, repeatable fills and a durable machine that copes with longer sessions. Its fast filling, effective cooling and automatic stop make it good value for those who regularly refill PCP and paintball tanks, while users seeking ultra-quiet operation or certified scuba-grade fills should evaluate alternatives.

Frequently Asked Questions

Is this compressor safe for scuba tanks?
The unit is not certified for scuba breathing fills; the manufacturer notes scuba use is not certificated and an extra burst disc is suggested when filling above 5000psi.

How noisy is the GX-E-5K2?
Noise reports are mixed: some owners find it relatively quiet for the power, while others describe it as loud; plan for typical compressor noise during fills.

What maintenance is required before first use?
Fill the water tank with 500ml automotive coolant before starting and follow the grease injection guidance: do not turn the grease tank for the first 6 hours and then adjust gradually.