BikeMaster 4.50/4.75/5.10-17 TR6 Tube 1989-mercury-cougar-ls-esi9185699 Duramax owners can choose from

Duramax owners can choose from two huge patented 6

Drop-In Stock-Appearing Turbo

5” double-walled tips available in chrome silver

Tail pipe set (Carbon) has to be ordered separately as a mandatory part

Crankshaft Seals are manufactured with a carbon lip to reduce dry start friction and improve performance

BikeMaster 4.50/4.75/5.10-17 TR6 Tube 1989-mercury-cougar-ls-esi9185699 Duramax owners can choose fromMade with seamless construction, these are natural rubber tubes with heavy duty valves. Natural rubber tube with heavy duty valve for long lasting performance Made with seamless construction for durability and reliability