BetaFPV Air75 II frame (purple)

BetaFPV Air75 II Frame (Purple)

The BetaFPV Air75 II Frame is a next-gen 75mm brushless whoop frame built for pilots who want more thrust, lower weight, and better crash resistance without sacrificing control. Developed together with BetaFPV’s global pilot community, the Air75 II takes everything riders loved about the original and refines it into a lighter, sharper, more durable platform for everyday indoor and outdoor micro FPV flying.

Weighing just 4.00g, this updated frame delivers a 10% weight reduction compared to Gen 1, while its redesigned duct geometry and optimized arm structure help unlock 11% more thrust. The result is snappier throttle response, cleaner handling, and a more locked-in feel in the air—ideal for freestyle, tight technical lines, and smooth, reliable cruising.

Key Features

• Ultra-light 4.00g frame for agile handling and improved efficiency.
• 11% more thrust thanks to optimized ducts and a redesigned arm-brace layout.
• Reduced arm braces from 6 to 4 for lower weight and cleaner airflow without compromising durability.
• Improved frame stiffness and lower vibration for near-ideal PID step response and smoother flight behavior.
• Durable PP material blend built to absorb hard impacts and survive demanding freestyle sessions.
• Pilot-focused details including motor mounting sockets, motor screw protection, enlarged FC mounting holes, and a lowered duct profile.
• Fits 40mm propellers and supports a 25.5 x 25.5 mm flight controller mounting pattern.

Specifications

• Product: Air75 II Brushless Whoop Frame
• Material: PP
• Weight: 4.00g
• Wheelbase: 75mm
• Motor Mounting Pattern: 3-M1.4-6.6mm
• Flight Controller Mounting Holes: 25.5 x 25.5mm
• Battery Slot Size: 16.3 x 6.3mm
• Maximum Dimensions: 99.1 x 99.1 x 16.2mm
• Color: Transparent Purple
• Compatible Propellers: 40mm

Air75 II vs Air75

Frame Diagram

Redesigned Frame with 11% More Thrust

By strategically reducing the number of arm braces from 6 to 4 and refining the duct aerodynamics, the Air75 II delivers 11% more thrust than the first-generation frame. That means faster throttle pickup, stronger punch-outs, and a more responsive feel in the air for pilots who want their whoop to feel lively and precise.

Reliable, Smooth Flight Performance

After dozens of structural refinements, the final arm-connecting design helps reduce frame vibration and unwanted resonance. Combined with proper feedforward tuning, the Air75 II can achieve an almost perfect PID step response—giving you more precise control, cleaner cornering, and silky-smooth freestyle performance.

Optimized Durable Material

The proven PP material blend is made to take hits from concrete, trees, and the kind of crashes every FPV pilot knows too well. It is tough enough for hard freestyle sessions and consistent enough for long-term use, so you can fly harder and worry less.

Details That Matter

Every gram and every mounting point has been carefully considered. The retained motor mounting sockets help ensure accurate alignment, the new motor screw protection structure helps redirect impact forces during crashes, and the enlarged FC holes make installation easier with 1.4mm screws. It is a smart upgrade for pilots who appreciate both performance and practical build-friendly design.

What’s Included

• 1x Air75 II Brushless Whoop Frame