UMS 5-100cc SILENCER ASSEMBLY

This is the silencer assembly for the UMS 5-100cc engine, the five-cylinder 100cc four-stroke radial from UMS.

The part itself is the silencer assembly, which collects the exhaust from the cylinders and reduces noise.

Why it is replaced: silencers crack at the welds and corrode from the inside, and a cracked silencer is noisy, can leak hot gas and can come apart in flight.

Fitting note: Check the welds and mounting points closely and support the silencer so vibration is not carried by the joints.