APC AP04055E-B4 FPV Propeller Bundle 4x5.5E (2 Standard & 2 Reverse Rotation)  [AP04055E-B4]

FPV 4x5.5 Propeller Bundle

This APC AP04055E-B4 propeller bundle is an RC-scale accessory intended for FPV racing and freestyle quadcopters that use 4x5.5E style blades. The pack groups both rotation directions so you can install matched pairs for the correct counter-rotating setup common on quad frames.

What’s included follows the model name: two standard rotation props and two reverse rotation props, supplied as replacement or spare blades for race-day maintenance or practice sessions. Use them to keep a spare set on hand for quick swaps after crashes or for tuning flight characteristics.

Installation is straightforward: match each prop to its motor rotation, confirm the mounting fit on your prop adapter or nut, and make sure the blade faces and leading edges are oriented correctly before flight. Inspect for nicks and balance each prop if you aim for smoother throttle response; replace any blade that is chipped or warped to avoid vibration.

Tuning notes: swapping to a fresh set can change low-end response and throttle feel subtly, so test hover and throttle inputs in a safe area after replacement. For balanced performance, ensure props are clean, free of debris, and mounted without play.