This is a tuned pipe that fits .90-1.30 sized engines. A tuned pipe will
quiet/muffle an engine and INCREASE the power and RPM of the engine. It is
made of aircraft grade aluminum. This pipe REQUIRES an exhaust adaptor (header)
to fit the engine (Macs makes a bunch) and a piece of silicone tubing (also
called a tuned pipe coupler).
Updated 11-2-92 NMH
– If you need more information, use these Macs resources –
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