RotorTech 420mm Ultimate Main Blades are finely crafted premium carbon fiber rotor blades from Fun-Key. RotorTech blades designed for all around powerful, efficient, well rounded performance oriented blade that will suite a large majority of flight styles from simple aerobatics, F3C, and extreme 3D flight. RotorTech blades utilize a minimal weight offering boost in performance.

A unique design to deliver increased performance compared to other blades. Improved thrust at equivalent collective pitch angles, increased flight times with improved performance, higher rotational  rates while maintaining stability, a linear feel, and increased stall margin at comparable thrust levels.

Precision balanced at the factory, allowing pilots to bolt on and fly any set of RotorTech blades to their helicopter.