A hush kit is an aerodynamic device used to help reduce the noise produced by older aircraft jet engines. The most common form of hush kit is a multi-lobe exhaust mixer. This device is fitted to the rear of the engine and mixes the jet core's exhaust gases with the surrounding air and a small amount of available bypass air. Modern high-bypass turbofan engines build on this principle by utilizing available bypass air to envelop the jet-core exhaust at the rear of the engine, reducing noise.

• Model code: 268U2 Update kit 727-200 Stage 3 Hush kit
• Version: magnetic mounting*
• Revision: original (2025-08-19)
• Scale: 1/50
• Engines: JT8D series
• Parts quantity: 17 (+ 4 magnets 4x4 if need)
• 3D print complexity: 3/5
• Assembly complexity: 3/5

*268U2 Update kit 727-200 Stage 3 Hush kit is compatible with 1/50 scale model kits 727-200 down/up: 26801, 26802, 26803, 26804, 26805, 26806, 26807 and 26808.

Importantly! The model is divided into parts that are oriented for easy printing. Solid model not included in this kit.

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3D printing settings

The model is optimized for a 0.4 mm nozzle and 0.15 mm layers. Approximate ⌀1.75 mm filament length for one set - 29 meters. Parts were tested on Qidi Q1 Pro. The manual includes information about supports and printing recommendations.

Files format: .stl Providing files in other formats must be discussed separately.