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Borla XR-1 Low Profile Multicore 2.5IN Outlet/Inlet / 4IN x 16IN / 21IN OAL Round Muffler-Borla-BOR401382
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Borla XR-1 Low Profile Multicore 2.5IN Outlet/Inlet / 4IN x 16IN / 21IN OAL Round Muffler

Borla
BOR401382
808422013826
Muffler
20+ Units In Stock - Ships Next Business Day
$ 296.99 $ 265.99
FREE Ground Shipping!
$ 265.99

SKU: 401382   |   UPC: 808422013826

Borla 401382 XR-1 Low Profile Multicore 2.5IN Inlet/Outlet 4IN x 16IN 21IN OAL Round Muffler

This Borla XR-1 multicore racing muffler fits universal custom exhaust applications on classic cars, late-model vehicles, and low-clearance setups. The 2.5-inch center inlet and outlet with reversible design deliver aggressive Borla sound while adding power, torque, and fuel economy. Compact 4-inch diameter by 16-inch body ensures easy fit without sacrificing ground clearance or performance.

Key Features

  • Multicore Technology: Patented design with high-temperature CFF acoustic material quiets exhaust without restricting horsepower or torque.
  • T-304 Stainless Steel: 100% welded 16-gauge construction resists corrosion and polishes to mirror finish for lasting durability.
  • Low-Profile Design: 4-inch round body and 21-inch overall length ideal for tight spaces and vehicles with ground clearance concerns.
  • Reversible Configuration: Center 2.5-inch inlet/outlet works in any orientation for straightforward custom installs.
  • Made in USA: Engineered for street, off-road, and racing with proven Borla power and sound characteristics.

Product Notes

  • Universal muffler for custom exhaust fabrication; verify clearance before install.
  • Polish stainless surface for custom show finish; avoid abrasive cleaners.
  • Ships in protective box; handle with care to preserve inlet/outlet threads.

Installation Notes

  • Professional installation recommended.
  • Reversible flow allows inlet/outlet positioning to match exhaust routing.
  • Compatible with standard exhaust clamps and hangers; weld or clamp as needed.

This Part Fits

Year Make Model Submodel
Universal All Custom Exhaust Racing/Off-Road/Street

Why Choose Borla?

  • Two decades pioneering stainless steel exhaust for classics like Rolls-Royce and modern performance vehicles.
  • Delivers measurable power, torque, and efficiency gains in real-world testing.
  • Precision engineering from the brand with most motorsport wins and enthusiast recognition.

Frequently Asked Questions

  • Q: Will this muffler fit my specific vehicle?
    A: Designed as universal for custom exhaust on cars and trucks; measure for 2.5in tubing and 4in body clearance.
  • Q: What material is used in construction?
    A: Full T-304 stainless steel with 16-gauge walls and full welds for strength and heat resistance.
  • Q: What warranty coverage applies?
    A: Borla limited lifetime warranty against defects in materials and workmanship when installed properly.

Shipping & Handling

  • Method: UPS Ground or FedEx Ground
  • Availability: In stock - ships same or next business day
  • Packaging: Secure cardboard box, 24in L x 6in W x 6in H
  • Weight: 8 lbs

Request For Information

Have questions about Borla XR-1 Low Profile Multicore 2.5IN Outlet/Inlet / 4IN x 16IN / 21IN OAL Round Muffler? Fill out the form below and we'll get back to you by the next business day.
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