iFlight AOS 3.5 V5.1 FPV Frame Kit, 3.5 Inches

iFlight AOS 3.5 V5.1 FPV Frame Kit, 3.5 Inches

Product description

The iFlight AOS 3.5 V5.1 FPV Frame Kit is a high-quality 3.5-inch freestyle frame designed specifically for precise flight performance, low vibration, and maximum control. Based on the proven AOS-RC design, this frame offers an extremely stable construction with optimized resonance damping—perfect for freestyle, cinematic flights, and high-quality HD footage.

Thanks to its sophisticated geometry, the AOS 3.5 V5.1 delivers exceptionally smooth flight characteristics with low resonance and minimal vibration. This not only ensures precise control but also improves gyro data and significantly reduces jello effects in HD footage. Modern FPV frames have become small mechanical works of art—a blend of engineering, carbon fiber, and controlled chaos.

A particular highlight is the propeller-free camera view. The frame was designed so that no propellers appear in the camera’s field of view. This makes the AOS 3.5 V5.1 ideal for cinematic freestyle footage and professional HD videos with the DJI O3 or DJI O4 Air Unit.

With its robust carbon construction, 4 mm-thick arms, and compact 162 mm wheelbase, the frame offers an excellent balance of stability, agility, and crash resistance. Despite its sturdy build, the weight remains pleasantly low, enabling an extremely responsive flight feel.

Features

• High-quality 3.5-inch freestyle FPV frame
• Optimized for low resonance and vibration
• Propeller-free camera view
• Ideal for freestyle and cinematic FPV
• Compatible with DJI O3 & DJI O4 Air Unit
• Supports Vista HD & BLITZ 1.6W VTX
• Robust carbon fiber construction
• Precise and stable flight performance
• 4 mm-thick arms for high crash resistance
• Compact & lightweight design
• Supports 20x20 mm & 25.5x25.5 mm electronics

Technical Specifications

General

• Model: AOS 3.5 V5.1
• Type: FPV Freestyle Frame Kit
• Propeller size: 3.5 inches
• Material: Carbon fiber

Dimensions & Weight

• Frame Size: 133 × 93 × 30 mm
• Wheelbase: 162 mm
• Weight without hardware: approx. 81 g

Frame Construction

• Arm thickness: 4 mm
• Top plate: 2 mm
• Center plate: 1.5 mm
• Bottom plate: 1.5 mm

Electronics Assembly

• VTX Mount:
  • 25.5 × 25.5 mm Ø2
  • 20 × 20 mm Ø2

Compatibility

• DJI O3 Air Unit
• DJI O4 Air Unit
• DJI O4 Air Unit Pro
• Vista HD System
• BLITZ Whoop 1.6W VTX