iFlight AOS 4 V5 Frame Kit

The iFlight AOS 4 V5 is a 4-inch freestyle frame built around the patent-pending AOS X-Cell anti-vibration stack mount, which cuts vibration reaching the flight controller by up to 50% so builders can run lower filtering and higher PID gains for locked-in flight performance. It hits the sweet spot between micro-quad agility and 5-inch momentum.

Key features

• AOS X-Cell anti-vibration mount for the flight stack reduces vibration reaching the flight controller by up to 50%.
• 7075 aluminium camera cage accommodates 14–20mm cameras, with hard or soft mounting for analogue, Walksnail Avatar, HDZero and DJI systems.
• Compatible with the DJI O3 Air Unit and, from the March 2025 update, the DJI O4 Air Unit and O4 Air Unit Pro.
• Dual stack footprints support both 20x20 and 25.5x25.5mm boards for flexible FC, AIO and VTX placement.
• Flexible lengthwise or toilet-tank battery mounting to balance the build for your flying style.

Specifications

• Propeller support: 4-inch
• Wheelbase: 180 mm
• Frame dimensions: 145.5 x 106 x 31.5 mm
• Arm thickness: 4.5 mm
• Plate thickness: 2 mm top, bottom and upper plates
• Stack mounting: 20x20, 25.5x25.5
• VTX mounting: 20x20, 25.5x25.5
• Max stack / VTX height: 20 mm
• Motor mounting: 9x9 / 12x12 mm (M2), 16x16 mm (M3)
• Camera sizing: 14–20mm
• HD compatibility: DJI O3, O4 and O4 Pro Air Units, Caddx Vista, BLITZ Whoop 1.6W VTX
• Weight: 128 g

Pair this frame with 1404 to 2004 motors and a compatible AIO flight controller to build a lightweight, responsive freestyle platform that needs minimal tuning out of the box.