IM-518 Internal Muffler for 5", 6" & 7" Stacks

Exact Match Results (2 Companies Found for Grand Rock - IM-518 Internal Muffler for 5", 6" & 7" Stacks)

Internal Muffler Stack Insert. This straight through muffler takes out the rap and other mid to high frequencies and leaves the low big truck rumble, with out sacrificing performance. [improve this definition]