CSP SAVINGS!

CSP2026

Borla 400374 - XR-1 Multi-Core 4in Ctr-Ctr Round 16in x 6.25in Rotary Engine Equipped Racing Muffler

Borla  |  SKU: BOR-400374
Sale price $39099 Regular price $43699

DISCLAIMER: This Item Is Special Ordered, which may have cancellation or return restrictions. Please see our terms and conditions for more information.


PLEASE NOTE: Pictures may be representative of style, rather than the actual product. Read the description for more details.

Description

Borla 400374 - XR-1 Multi-Core 4in Ctr-Ctr Round 16in x 6.25in Rotary Engine Equipped Racing Muffler

XR-1® Stainless Multicore Racing Mufflers

XR-1® Multi-Core Racing Muffler Rotary Engine Equipped Vehicles - 4" Center Inlet/ 4" Center Outlet 6.25" Round x 16" Long Body 21" Overall Length. Universal Part. Reversible Design.

XR-1(r) Multi-Core Racing Muffler. 3" Center Inlet/ 3" Center Outlet 6.25" Round x 16" Long Body 21" Overall Length. Long body design works well on SUV & truck applications but can be used on a wide range of vehicles. It features BORLA(r)'S patented Multi-Core 4 tube design for maximum flow, horsepower, and torque. The Multi-Core portion of XR-1(r) mufflers flows better than straight tubing. Recommend for high horsepower applications. Reversible design for installation flexibility. T-304 Stainless steel for superior corrosion resistance. Natural mill finish can be brushed or polished prior to installation. 100% welded construction for strength. High-temperature continuous-filament fiber (CFF) acoustic material for sound control. There is no BORLA(r) logo embossment on this part. 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.

  • Universal muffler. Reversible design. No BORLA(r) logo embossement.
  • Long body design works well on SUV & truck applications
  • Can be used on a wide range of vehicles
  • 4" Center Inlet/ 4" Center Outlet 6.25" Round x 16" Long Body 21" Overall Length'Multi-Core 4 tube internal design
  • 4" Center Inlet/ 4" Center Outlet 6.25" Round x 16" Long Body 21" Overall Length'Multi-Core 4 tube internal design
  • Multi-Core 4 tube internal design
Inlet Connection Type: Pipe
Grade Type: Performance
Construction: All Welded
Body Width: 6.250 in.
Body Height: 6.250 in.
Outlet Position: Center
Tip / Outlet Finish: N/A
Shape: Round
Overall Length: 21.000 in.
Outlet Type: Single Center Outlet
Outlet Outside Diameter: 4.000 in.
Body Length: 16.000 in.
Off Road Use Only: No
Muffler Count: 1
Material: T-304 Stainless Steel
Main Piping Diameter: 4.000 in.
Inlet Type: Single Center
Inlet Position: Center

What are people saying about CSP?