Producing 65% more performance than the GMAX 3400, the GMAX II 3900 has the power and flow to handle up to two guns and is ideal for the professional contractor who sprays a wide variety of coatings.

• Chromex Endurance Piston Pump
  
  • The most reliable pump
  • Lasts 2X Longer than the next leading brand
  • Repack the pump in minutes with the new QuikPak Cartridge System
  • QuikChange pump design allows you to swap the pump easily on the job
  • Faster cleaning with the QuikAccess intake foot valve
• SmartControl 3.0 
  
  • Consistent spray fan & pressure control
  • Lowest dead band at any pressure
  • Ideal for low overspray applications
• Precision Advantage Drive
  
  • The longest lasting drive
  • Hardened steel gears provide extremely quiet operation
  • Lifetime Warranty
• Easy Out Pump Filter 
  
  • Easy maintenance & less clogging
  • Exclusive inside-out filtering process ensures a quality finish
  • Vertical design for less mess
• Heavy-Duty Prime Valve
  
  • Maintenance-free high-pressure dumping
• Durable Cart Design
  
  • Rugged and easy-to-maneuver
  • Thick chrome over steel and pneumatic wheels for tough jobsite conditions
  • Retractable handle doubles as coiled hose storage
• Honda® Engines
  
  • Reliable, powerful & easy-to-start
  • Oil Alert shuts down engine to prevent damage if oil level drops too low
  • Contractor Preferred
• Contractor PC Spray Gun 
  
  • All-day comfort & control
  • Lightest weight gun in its class
  • Up to 50% lighter trigger pull force
  • E-Z Fit adjustable trigger length
  • Complete no-tools gun rebuild in seconds with ProConnect cartridge
• Jobsite Ready
  
  • Includes RAC X SwitchTip and 50 ft (15 m) of BlueMax II hose