Borla CrateMuffler BBC 396 2.5 inch Offset/Offset 14in x 4.35in x 9in Oval Muffler

What you get here is a Borla CrateMuffler, specifically designed to optimize the sound and power for Big Block Chevrolet crate engines like the 396, 402, or 427 V8. This muffler is directional, meaning it's tuned for a specific engine family to reduce or eliminate exhaust drone, which is a common annoyance in many custom builds. The outlet side is easy to spot because it has a mounting bracket welded onto the endcap.

Borla builds these CrateMufflers from T-304 stainless steel, which is a strong material that resists corrosion and holds up well over time, offering better performance and durability than some other stainless steel grades. The muffler itself is oval-shaped, measuring 14 inches long, 4.35 inches high, and 9 inches wide, with 2.5-inch inlet and outlet pipes. Precision manufacturing helps ensure it fits right where you need it.

If you're looking for a specific sound level, you can add their optional resonator (part number 400938) to achieve a Touring sound level. Borla backs this muffler with a Million-Mile Warranty, reflecting their long history in performance exhaust systems.