UMX Yak 54 180 BNF This is the E-Flite UMX Yak 54 180 BNF Airplane. The UMX Yak 54 180 ultra micro airplane gives you a bold new level of aerobatic performance. No other aerobatic design meets the challenge and demands of both 3D versatility and precision like the E-Flite UMX Yak 54 can.Features:Lightweight, hollow-core, carbon fiber reinforced construction Powerful yet efficient 180BL, 3000Kv brushless motor Built-in side force genera