BETAFPV Air75 II Whoop Frame Kit (2-Pack) – 4g Ultra Light 75mm Frame for 1S Racing Drones

The BETAFPV Air75 II Brushless Whoop Frame Kit is a 4-gram, 75mm wheelbase frame set for ultra-light 1S racing whoop drones. It uses a reinforced PP material and includes two frames—one black and one transparent. The frame features a lowered profile, motor fix slots for precise alignment, and design refinements that boost thrust by 11% compared to the original Air75.

Design improvements for better thrust and control

Co-developed with pilots, the Air75 II frame reduces arm braces from six to four and adjusts duct aerodynamics. This increases thrust by 11% over the previous generation. The structural changes also lower frame vibration when paired with Feedforward tuning, leading to smoother PID step response and crisper maneuvers.

Frame dimensions and weight details

Compatible parts for building your whoop

The frame works with Matrix 1S and Air Brushless flight controllers, 0702, 0802SE, and 1102 motors, and 40mm 2-blade or 1611 3-blade propellers. Recommended batteries include LAVA 1S 450mAh or 550mAh with BT2.0 connector. Various canopy options are available, such as the Air Canopy and Micro Canopy Lite.

How does the frame handle crashes?

The PP material is chosen for impact resistance. Additional protection comes from motor screw guards that deflect hits and enlarged 1.2mm FC holes that accept 1.4mm screws for a secure fit. The motor fixed slots keep motors aligned even after hard impacts. These details help the frame survive violent crashes and keep flying.

Quick answers about fit and features

• What is the weight of one frame? Each frame weighs 4 grams.
• Does the kit include both colors? Yes, one black frame and one transparent white frame.
• What motors are recommended? BETAFPV recommends 0702 II, 0802SE, and 1102 brushless motors.
• What flight controllers fit? The 25.5×25.5mm mounting pattern fits Matrix 1S controllers (3in1/4in1/5in1) and Air Brushless FCs.