4 in 1 exhaust system with four identical 805mm long primary tubes in a manifold and a tail pipe. A rotating tube allows to absorb the mobility between the primary Exhaust and the Silencer installed under the cockpit.

The respect of the identity of the lengths of the primary tubes allows an equivalent output for each cylinder, bringing a gain on the fuel consumption (approximately 10% at equal performances) while decreasing the engine vibrations for a better comfort inside the cockpit.

The thermal recovery of the exhaust gas flow supplies the carburetor and the cabin heater. Carburetor heater and cabin heater boxes installed respectively on the primary and tailpipe manifolds.
The choice of materials with high thermal resistance ensures excellent reliability.

A revision of the Silencer is required every 600 hours for the necessary inspection of the soundproofing materials.

This product is valid in Canada and has been approved by TCCA

The Cessna 152 equipped with our muffler is rated A in the Calypso rating; it is in this rating, the least noisy of all aircraft in France equipped with a Lycoming engine