Take your N54 powered BMW 335xi to the next level with ARM Motorsports 3" catless downpipes.
The ARM N54 AWD catless downpipes eliminate the restrictive OEM converters on the stock downpipes allowing the exhaust to flow more freely, increasing power and torque. Because higher boost levels generate more heat, the ARM 335xi catless downpipes allows your AWD N54 to run boost settings of Stage 2 tunes and beyond.
The ARM 335xi catless downpipes are designed with 3" stainless steel construction to optimize exhaust flow off the turbochargers and reduce to 2.5" to match up perfectly to the OEM midpipes. Our 335xi downpipes are designed specifically to fit your AWD N54 platform.
Each downpipe has two O2 sensor bungs so the factory BMW O2 sensors can be remounted allowing the ECU to continue to monitor the air/fuel mixture via the exhaust. Because these downpipes are a catless design, an ECU tune or CEL fix will be needed to avoid a CEL from displaying on instrument panel.
AWD VEHICLES ONLY
Make | Chassis | Model | Engine |
BMW | E90 | 335xi Sedan | N54 3.0L |
BMW | E92 | 335xi Coupe | N54 3.0L |
BMW | E93 | 335xi Convertible | N54 3.0L |
My experience was very good with ARM. When I had a problem, they were right there to make it right simple, fast and effective. I am going to refer all of my friends to this company for their upgrade and tuning needs. I will be purchasing from ARM again myself!!!
awesome upgrade and amazing sound once completed! Be sure to order replacement clamps and pre cat gasket, old ones tend to rust overtime.
Never been so impressed with an overall quality upgrade. Extra time was taken to give instructions with the parts and everything fit like you would expect. Thank you for being a n54 platform company with such great quality.
I bought, received and installed the downpipes with no issues, no crazy fumes or anything, awd ones fit perfect.
Great company, perfect upgrade for my 335xi, fitment was perfect, & could see the pride in the workmanship, the welds were perfect, I received them in 2 days very punctual timing & received tracking info & emails for shipping progress every step of the way, if your in need of some down pipes don’t hesitate this company has the right ones & the sound is amazing!!! Very satisfied… Thanks ARM Motor sports
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