iFlight BOB57 O3 Frame Kit

The iFlight BOB57 O3 is a 6-inch hybrid frame designed with pilot Ellis van Jason, built to bridge agile 5-inch freestyle quads and long-range 7-inch cruisers while carrying a full DJI O3 Air Unit. A dedicated TPU camera mount and a lengthened chassis keep propellers out of the wide-angle HD feed.

Key features

• Takes 6-inch bi-blade or tri-blade propellers, balancing freestyle agility with long-range cruising efficiency.
• 6mm-thick arms in an H-shaped layout with a robust middle section that keeps props out of view.
• Dedicated TPU camera mount isolates the DJI O3 Air Unit from motor vibration; 20mm camera mounting width.
• Flight-stack mounting at 20×20mm and 30.5×30.5mm covers most FC/ESC stacks; VTX mounts at 20×20mm and 25.5×25.5mm.
• Front-mounted XT60 and a Gladiator-style shell keep the battery lead tidy and add light dust and splash protection.

Specifications

• Wheelbase: 278 mm
• Frame dimensions: 165 x 225 x 34 mm
• Arm thickness: 6 mm
• Bottom plate thickness: 1.5 mm
• Top plate thickness: 2 mm
• Upper plate thickness: 2.5 mm
• Motor mounting: 16 x 16 mm
• Compatibility: DJI O3 Air Unit and Vista
• In the box: frame kit, TPU parts (dual-antenna VTX mount), 2 x 215 mm MIPI video cables for the O3 Air Unit, 4 motor wire shield tubes, battery anti-slip pad, 2 battery straps, screw bag; IPEX-to-SMA adapter cables and anti-spark filter not included

The kit includes the carbon fibre plates, standoff hardware and TPU prints needed to mount the DJI O3 Air Unit, making it a ready platform for cinematic freestyle builds without stepping up to a full 7-inch rig.