APC AP305040E-B4 5x4E 3-Blade FPV Propeller Bundle (2 Standard & 2 Reverse)  [AP305040E-B4]

Compact 5x4E Three-Blade FPV Prop Pack

This APC AP305040E-B4 bundle provides a four-piece mixed-rotation set with two standard and two reverse 3-blade props designed for FPV multirotors. It is intended as replacement spares or as an upgrade option for racers and freestyle pilots using three-blade blades.

Performance notes: the three-blade layout delivers stronger mid-to-high RPM thrust and crisper control than two-blade options, helping refine throttle response and handling during aggressive flying. Use the model ID 5x4E when matching or ordering replacements to ensure correct fit and performance.

Installation tips: align prop rotation with motor direction and confirm hub bore and thread compatibility, then secure with the correct nut or adapter. Check each prop for chips or deformation before flight and tighten to the recommended torque for your shaft and hub system.

Setup and maintenance: test both standard and reverse props during setup to reduce unwanted yaw bias and distribute motor load evenly. Balance each prop on a prop balancer and replace any blade that shows cracks or severe nicks to avoid vibration that can affect flight controllers, ESCs, and onboard cameras.