Specialty Muffler

Transverse Flow design. Transverse flow mufflers were originally designed for GM F-Body Camaros and Firebirds. On these vehicles they were mounted behind the rear axle and were parallel to the axle. This muffler can also be used to create custom systems on other vehicles. Single 2.5" Offset Inlet/ Dual 2.5" Offset Outlets. The inlet and one outlet are on one end of the muffler, and the second outlet is on the opposite end. Notched necks for clamp-on installation using 1" wide band style clamps (clamps not included). Reversible design for installation flexibility. High-quality T-304 austenitic stainless steel for superior corrosion resistance. 100% welded construction for strength. Free Flow design for improved performance. High-temperature continuous-filament fiber (CFF) acoustic material for sound control. Natural mill finish can be brushed or polished prior to installation. Best of all, it's made in the USA and backed by BORLA(r)'s Million-Mile warranty. Just what you'd expect from the world's most experienced (and most winning) exhaust brand.

Additional Information

Specialty Muffler - Transverse Flow - Single 3" Offset Inlet/ Dual 2.5" Offset Outlets (One Outlet On Same End As Inlet And One Outlet On Opposite End) 6" x 10.25" Oval x 19" Long Body 24" OAL. Univ. Part. Reversible Design. Notched Necks.

Part Type

Exhaust Muffler

Product Overview

Transverse Flow design. Transverse flow mufflers were originally designed for GM F-Body Camaros and Firebirds. On these vehicles they were mounted behind the rear axle and were parallel to the axle. This muffler can also be used to create custom systems on other vehicles. Single 2.5" Offset Inlet/ Dual 2.5" Offset Outlets. The inlet and one outlet are on one end of the muffler, and the second outlet is on the opposite end. Notched necks for clamp-on installation using 1" wide band style clamps (clamps not included). Reversible design for installation flexibility. High-quality T-304 austenitic stainless steel will never rust. 100% welded construction for strength. Free Flow design for improved performance. High-temperature continuous-filament fiber (CFF) acoustic material for sound control. Natural mill finish can be brushed or polished prior to installation. Best of all, it's made in the USA and backed by BORLA(r)'s Million-Mile warranty. Just what you'd expect from the world's most experienced (and most winning) exhaust brand.

• Alternate muffler with Un-Notched necks is 40477. If clamping, use band clamp 18004.
• Notched necks are designed for clamp in installation, use band clamp 18004
• Transverse flow design, originally designed for F-Body Camaro and Firebirds
• Universal muffler. Reversible design.

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Product Details

Reference Information

Muffler, Specialty, Crossflow Design, Oval, Stainless, One 2.5 in. Offset Inlet, Two 2.5 in. Offset Outlets, 19 in. Case Length, Each

Borla offers a selection of bolt-on clamp and weld-on Specialty mufflers, all designed to make your vehicle perform and sound better. These Specialty mufflers are available in hard-to-find applications, including round S-Type, Transverse Flow, and round heavy-duty styles. Unlike almost all competitors, Borla mufflers are made from very high-quality T-304 stainless steel, so they're great for vehicles in humid, rainy, and snowy regions due to very high corrosion resistance properties. Regardless of style, each Specialty muffler has smooth mandrel bends, strong and smooth welds, and precise construction to ensure a perfect fit.