Borla S-Type axle-back exhaust systems replace the factory rear
muffler(s) and exhaust pipe(s) and are installed behind a vehicle's
rear axle. Following the same exhaust path and secured using the
original hangers and rubber isolators, Borla axle-back (or rear
section) performance exhausts are less restrictive than factory exhaust
systems and improve the sound level both inside and outside the cabin.
axle-back exhaust systems use engine-specific (not universal) mufflers
that are designed, tested, and optimized specifically for a particular
year, make, and model. Improvements in sound and performance are
accomplished by using superior muffler designs, mandrel-bent tubing,
and the application of proper engine-matched tubing diameters. Welded
tips are standard on most systems.
vehicles have a factory service-point in the exhaust system (flange or
slip-fit) located in the exhaust tubing behind the rear axle; so most
Borla S-Type axle-back installations are completed in less than an hour
with no cutting of the factory system. Vehicles that don't have a
factory service-point require cutting, so Borla includes easy-to-follow
instructions and hardware to complete the installation.
pioneered the use of aircraft-grade 304 stainless steel tubing, a
material with a higher content of carbon and nickel that won't rust or
corrode, for the automotive exhaust aftermarket … including Borla
S-Type axle-back exhaust systems.