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BMW 135 Exhaust Austenite™ Cat Back Exhaust BMW 135i

From: $830.96

You'll earn $41.55 BoostBucks™

The stock exhaust system on the BMW 135i leaves a lot of room for improvement. It does a good job at suppressing exhaust noise, but also corks what is otherwise a wonderful sound.

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Product Description

cp-e set out to create the best sound and performance when designing our BMW 135 Exhaust. The stock exhaust system on the BMW 135i leaves a lot of room for improvement. It does a good job at suppressing exhaust noise, but also corks what is otherwise a wonderful sound. cp-e™ has designed a two part system, the QuickPower™ pipe and the Austenite™ Cat Back system, to get the most out of your 135i. Our BMW 135 Exhaust system features our new muffler which is internally similar to the one used on our 335i cat back, but it was specifically designed for the 135’s single inlet/dual outlet design. This new muffler has been lengthened and a small baffle was added to increase noise suppression. We have also added our cp-e™ Stealth™ pipe to keep the Austenite™ Cat Back system from droning.

We cannot guarantee convertible fitment without modification. Please contact us for more information.

The resulting sound is nothing short of intoxicating, and we would be surprised if your stereo gets much use after installation. The low-rpm range now has a warm and mellow tone without sounding too “boomy.” As you move further into the powerband the character changes from a baritone grunt into a frenetic roar. Our exhaust is a dramatic improvement over the flat uninspiring tone produced by the stock setup. It gives the 135i a more aggressive character without becoming overwhelming. Most importantly, there is no drone! We believe that it provides the perfect blend of performance, sound, and appearance, without any of the drawbacks from which most aftermarket exhausts typically suffer.

The catback replaces the rear section, which includes the rear muffler and tailpipes. Or opt to replace everything from the downpipe back, which includes the larger diameter QuickPower™ midpipes and optional 8-inch hybrid mufflers. No matter which options you choose, the cp-e™ 135i exhaust is a 100% bolt-in system that requires no cutting, grinding, or welding. Welcome to the product of serious engineering.

BMW 135 Exhaust Highlights


Stealth Pipe

To keep drone and cruising volume down, we’ve incorporated one of our stealth pipes. This crafty exhaust design uses the exhaust’s own sound frequencies to cancel out drone noises at lower RPM.

The best part of this design is that it allows the exhaust to be loud when you want it to, without the drone when you’re cruising.


Dual Exhaust Tips

The cp-e BMW 135 exhaust features an assortment of exhaust tip choices. All of our tips are available as dual tips. Choose from black, Titan, or polished to perfectly match your project.


OEM Fit & Finish

All cp-e products are designed with excellent fit and finish in mind and the BMW 135 exhaust is no exception. We use CNC and laser cut flanges throughout the exhaust to achieve perfect fitment every time.

Additional Information

Weight 75 lbs
Dimensions 59 x 11 x 22 in

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