8 x 5 Oval, 16" Length, 2" Bore, Twin to Twin 220175

8 x 5 Oval, 16" Length, 2" Bore, Twin to Twin. A twin-to-twin configuration, otherwise known as a dual, refers to a muffler that has two off-center exits on one end and two off-center exits on the other end so the exhaust gases run in two parallel channels before reaching two separate outlets. This configuration allows you to continue the channel of two separate lengths of tube and is a very quiet muffler overall. Ideal for duplex systems.