This muffler supersedes 4ALEX1993. This muffler design was run by the entire field at the 2023 Busch Light Clash At The Coliseum race. The part number 4ALEXR1993 that is used on this muffler is a nod to our co-founder Alex the XR1 Multicore Muffler, and the year that the patent for the Borla(r) Multi-Core muffler design was issued. 3" Center Inlet/ 3" Center Outlet 5" x 6.25" Oval x 13.5" Long Body 18.5" Overall Length. Designed for full bodied cars, but can be used on other applications. Reversible design for installation flexibility. " Patented Multicore design (6 core) for maximum low and power. Recommend for high horsepower applications. Heavy duty 16 gauge body. T-304 Stainless steel will never rust. 100% welded construction for strength. Brushed finish for sharp appearance. Can be polished to a mirror finish. High-temperature continuous-filament fiber (CFF) acoustic material for sound control. Best of all, it's made in the USA. Just what you'd expect from the world's most experienced (and most winning) exhaust brand
- Patent Pending
- Unlike any other exhaust brand, Borla'systems are designed from scratch on a vehicle-by-vehicle basis. Every car or truck has unique mechanical and acoustical properties, all taken into account as we spend countless hours optimizing muffler body shapes, internal core configurations, flow dynamics, sound and more.
- Unlike any other exhaust brand, Borla'systems are designed from scratch on a vehicle-by-vehicle basis. Every car or truck has unique mechanical and acoustical properties, all taken into account as we spend countless hours optimizing muffler body shapes, internal core configurations, flow dynamics, sound and more.
- This muffler design was run by the entire field at the 2023 Busch Light Clash at the Coliseum race
- Along with the distinctive Borla "Sound of Power" recognized by motoring enthusiasts everywhere, upgrading your ride with a Borla exhaust gives you a boost in power and torque, improved fuel economy, longer engine life and refined motorsport styling. But most of all, Borla gives you the intoxicating rush that comes with every squeeze of the throttle, the thrill of raging power with every shift, and a heart-pounding soundtrack to match. More than anything else, we understand that we build far more than exhaust systems. We build excitement.
- Along with the distinctive Borla "Sound of Power" recognized by motoring enthusiasts everywhere, upgrading your ride with a Borla exhaust gives you a boost in power and torque, improved fuel economy, longer engine life and refined motorsport styling. But most of all, Borla gives you the intoxicating rush that comes with every squeeze of the throttle, the thrill of raging power with every shift, and a heart-pounding soundtrack to match. More than anything else, we understand that we build far more than exhaust systems. We build excitement.
- Universal muffler. Reversible design.
- We are a company of motorheads, and it shows in our products, customer service, industry-leading Million Mile Warranty, and culture. On weekends, the same Borla employees who built your exhaust or helped you with technical support can be found competing at tracks, drag strips, off-road events and car shows.
- We are a company of motorheads, and it shows in our products, customer service, industry-leading Million Mile Warranty, and culture. On weekends, the same Borla employees who built your exhaust or helped you with technical support can be found competing at tracks, drag strips, off-road events and car shows.
- Multicore (6 core) internal flow tube construction
- Everything we've learned from racing and street performance over nearly four decades is reflected in each product that leaves our facilities.
- Everything we've learned from racing and street performance over nearly four decades is reflected in each product that leaves our facilities.
- Compact design is perfect for applications with limited space
- For many applications, Borla gives you a variety of choices for the volume and character of your exhaust note? From a subdued rumble to an all-out roar.
- For many applications, Borla gives you a variety of choices for the volume and character of your exhaust note? From a subdued rumble to an all-out roar.
- Everywhere you look, Borla's spirit of innovation and excitement screams with the same high-volume clarity as our unrivaled exhaust systems.
- Everywhere you look, Borla's spirit of innovation and excitement screams with the same high-volume clarity as our unrivaled exhaust systems.
- Borla is proud to offer a true "Made in the USA" product sold around the world.
- Borla is proud to offer a true "Made in the USA" product sold around the world.
- Borla products are constructed using T-304 stainless steel for long life and sharp appearance and feature all welded construction for maximum durability.
- Borla products are constructed using T-304 stainless steel for long life and sharp appearance and feature all welded construction for maximum durability.
- Borla products are constructed using T-304 stainless steel for long life and sharp appearance and feature all welded construction for maximum durability.
- Borla products are constructed using T-304 stainless steel for long life and sharp appearance and feature all welded construction for maximum durability.
