Bushing, machined aluminum alignment spacer DOPPLER mass for Peugeot 103 / Fox / wallaroo exhaust

This is the DOPPLER exhaust ring, also called the alignment spacer. This model is machined from high-end aluminum mass. This small part is used to align the ball joint 2 screws (flanged) with the exhaust on the cylinders which have a thread.

It therefore allows you to find a good duct and effect (see exhaust venturi).