Ultimate Biplane (20-26cc / 6s-8s) 1.37m / 54in

The Ultimate Biplane SEA-389 is a compact, aggressive aerobatic aircraft designed for intermediate to advanced pilots seeking crisp control, thrilling manoeuvres, and a bold presence in the sky. With a wingspan of 1.37m (54") and traditional balsa/plywood construction, this ARTF model is strong, lightweight, and factory-covered for a clean, professional finish.

Engineered for 20–26cc petrol engines or a high-powered 6S–8S electric setup, the Ultimate offers lightning-fast roll rates, powerful verticals, and balanced control in every axis. The included cabane and interplane struts, functional ailerons on all four wings, and rugged gear make this model as durable as it is capable. Whether you're performing precision patterns or advanced freestyle, the Ultimate delivers energy and elegance in equal measure.

About the original:
The Ultimate biplane series was developed as a modern answer to classic aerobatic designs, blending vintage flair with cutting-edge performance. Known for its symmetrical wings, compact layout, and explosive flight characteristics, the Ultimate has become a favourite among sport and competition pilots alike.