Mark4 5-Inch Carbon Fiber FPV Frame DIY Kit - 225mm Wheelbase

Specifications

• Frame Wheelbase: 225mm

• Arm Thickness: 5.0mm

• Top/Bottom Plate Thickness: 2.0mm

• Standoff Height: 25mm (Aluminum)

• Stack Mounting: 20x20mm & 30.5x30.5mm compatible

• Camera Mounting: 19mm / 20mm

• Weight: ~102g

Key Applications & Projects

• FPV Freestyle: Durable enough for technical maneuvers and "bando" flying.

• Racing Quadcopters: Low-profile design minimizes drag for higher speeds.

• Cinematic Builds: Rigid platform for carrying action cameras like the GoPro.

Unlock New Capabilities (Project Evolution)

• Feature Upgrade: The H-frame design allows for a low-center-of-gravity build, significantly improving flight stability and handling during sharp turns.

• Effort Level: Intermediate. Assembly of the carbon plates and aluminum hardware is required.

Package Includes:

• 4 x 5mm Independent Carbon Fiber Arms

• 1 x 2mm Carbon Fiber Top Plate

• 1 x 2mm Carbon Fiber Bottom Plate

• 1 x Hardware Bag (Aluminum Standoffs, M3 Screws)

• 1 x Non-Slip Battery Strap

FREQUENTLY ASKED QUESTIONS (FAQ)

• What is the wheelbase of the Mark4 5-inch? The diagonal wheelbase is 225mm.

• What size props does it use? It is designed specifically for 5-inch propellers.

• How thick are the arms? The arms are 5mm thick carbon fiber.

• Are the arms replaceable? Yes, each arm is independent and can be replaced individually.

• What stack size can I use? It supports 20x20mm and 30.5x30.5mm mounting patterns.

• Does it include a battery strap? Yes, a non-slip strap is included in the kit.

• What camera size fits this frame? It supports micro (19mm) and standard (20mm) FPV cameras.

• What is the frame material? It is made of 3K carbon fiber.

• What is the standoff height? The frame uses 25mm aluminum standoffs.

• Does it fit the DJI Air Unit? Yes, there is enough internal clearance for most digital VTX systems.

• How much does it weigh? Approximately 102 grams.

• Is it an H-frame or True-X? It is an H-style frame to keep props out of camera view.

• What motors are recommended? 22xx or 23xx series motors are the standard choice.

• Is it suitable for beginners? Yes, it is very durable and easy to repair.

• Does it come with a PDB? No, this is the frame only. Use a 4-in-1 ESC or separate PDB.

• What color are the standoffs? Typically silver or black aluminum.

• Can I carry a GoPro? Yes, action cameras can be mounted on the top plate.

• Are there TPU parts included? This kit is the carbon/aluminum only; TPU mounts are sold separately.

• What is the arm mounting pattern? Standard 16x16mm and 19x19mm motor mounting.

• Does it come with assembly instructions? It is an exploded view kit; refer to standard Mark4 assembly guides.