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Step up your micro game with the Flywoo Firefly18 Nano Baby V3 O4 Frame Kit. Slightly larger than its 1.6″ sibling, this 1.8-inch frame is designed to swing 45mm propellers, offering increased thrust and efficiency while remaining small enough to navigate tight indoor spaces. It is the perfect foundation for a custom 1S HD build utilizing the DJI O4 Air Unit.

The “1.8-Inch” Advantage

The Firefly18 hits the sweet spot between a tiny whoop and a larger toothpick. By accommodating 45mm props, this frame provides a smoother flight feel and slightly more authority than standard 40mm micro frames. Whether you are chasing cinematic shots indoors or flying freestyle in the backyard, the Firefly18 delivers the control you need.

Carbon Fiber Durability

Forget flimsy plastic. The Firefly18 features a 2mm Unibody Carbon Fiber Baseplate. This rigid structure reduces resonance and vibration—critical for capturing jello-free HD footage—and withstands crashes far better than traditional whoop frames. Weighing in at only 8g, it keeps your All-Up-Weight (AUW) low for maximum agility.

Versatile & Safe

The kit includes a set of ultralight propeller guards, allowing you to fly safely around people and obstacles. Flywoo also includes interchangeable TPU battery mounts, so you can securely lock in a 450mAh pack for speed or a 750mAh pack for endurance, all without dealing with slippery battery straps.

Key Features:

• Optimized for O4: Designed specifically to carry the DJI O4 Air Unit.

• 1.8-Inch Class: Fits larger 45mm props for better efficiency and thrust.

• Rigid Base: 2mm Carbon Fiber plate for durability and vibration dampening.

• Hybrid Design: Includes removable prop guards for indoor safety.

• Smart Battery Mounts: Swap between battery sizes easily without straps.

• Standard Fit: Compatible with 25.5×25.5mm AIO Flight Controllers.

Specifications:

• Model: Flywoo Firefly18 Nano Baby V3 O4 Frame Kit

• Main Board Thickness: 2mm

• FC Mounting Pattern: 25.5mm x 25.5mm

• Motor Mounting Pattern: 6.6mm (Triangle)

• Propeller Compatibility: 45mm (1.8 inch)

• Weight: 8g

What’s in the Box?

• 1x Flywoo Firefly18 Nano Baby V3 O4 Frame Kit

• 2x TPU Battery Mounts (Fits 450mAh / 550mAh / 750mAh range)

• 1x Set of Ultralight Propeller Guards

• 2x Shock Absorbing Balls

• 2x Nylon Studs

• 1x Hardware Kit & Acetate Tape