Borla CrateMuffler LS3 ATAK 2.5in Offset/Offset 14inx4.35inx9in Muffler Exhaust- Mufflers & Tips>Exhaust Valve Controllers For drivers who have opted

For drivers who have opted for the Active Valve Performance Exhaust from the factory

optimizes air distribution into the cylinder head

Just add air when towing or hauling a heavy load

Cutlass 1987-1985

Borla CrateMuffler LS3 ATAK 2.5in Offset/Offset 14inx4.35inx9in Muffler Exhaust- Mufflers & Tips>Exhaust Valve Controllers For drivers who have optedBORLA(r)'s CrateMuffler(r) is the world's first muffler purpose built to optimize the sound & power of crate and custom built motors. The mufflers are directional. The outlet can be identified by the mounting bracket welded to the endcap. The directional design provides the aggressive ATAK(r) sound and will dramatically reduce, or eliminate drone on specified applications. Muffler dimensions 2. 5" Offset Inlet 2. 5" Offset Outlet, 4. 35" x 9. 10"