Exhaust› Exhaust Pipes, Systems and Components

Cobb Tuning

Cat-Back Exhaust 3-Inch Stainless Steel

$1,530.00

SKU: cobb5B1130

Special Order
Special Order
Ships in 4–6 weeks
Free Shipping over $200
$100 Minimum Order
30 Days Return
INSTALL DIFFICULTY
DIY PRO SHOP

Moderate — 2–4 hours

Overview

The Cobb Tuning Cat Back Exhaust is a stainless steel exhaust system designed for the 2007-2011 BMW 335i models with the N54 3.0T twin-turbo engine. It features 3-inch diameter, mandrel-bent piping for improved exhaust flow and reduced backpressure. This system is engineered to enhance the exhaust character of the N54 inline-six engine, complementing Cobb Accessport calibrations.
Show original supplier description
The Cobb Tuning Cat Back Exhaust is a meticulously engineered stainless steel system designed specifically for the 2007-2011 BMW 335i (N54 3.0T twin-turbo) and 2008-2013 BMW 135i (N54 3.0T twin-turbo). Constructed from 304 stainless steel with 3-inch diameter mandrel-bent piping throughout, this exhaust system significantly improves exhaust flow compared to the factory setup. The design focuses on reducing backpressure, which directly benefits the efficiency of the N54's twin-turbochargers. By minimizing resistance in the exhaust stream, the turbos can spool more effectively, contributing to improved boost response and overall engine performance, especially when paired with Cobb Accessport calibrations. This cat-back system aims to deliver the distinct inline-six exhaust note characteristic of the N54 engine, enhancing its sound profile without introducing unwanted drone during cruising. Included with the exhaust system are all necessary hangers, gaskets, clamps, and hardware for a complete installation. The system features a straight exit with two 3.5-inch round stainless steel tips designed to align with the BMW rear fascia opening. Please note that delivery requires a signature upon arrival via UPS or FedEx.

Product descriptions are provided by our supplier partners and may not always be perfectly accurate. Not sure this fits? or call (760) 282-4645 and we’ll verify before you order.

Fitment

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Specifications

BrandCobb Tuning
Part Numbercobb5B1130
CategoryExhaust
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Returns & Fitment

Built for enthusiasts. Every order is backed by our 30 day return window on eligible items. Unused and uninstalled products may be returned with approved RMA and no restocking fees when received in new condition. Orders placed through the MOTORMIA app with a complete build qualify for our Fitment Guarantee — free return shipping if the part doesn’t fit your exact setup. The guarantee covers fit only; installation must follow manufacturer instructions, and we recommend a qualified shop for parts marked Difficulty 4–5.

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Shipping

Orders are processed in 1–3 business days. In stock parts ship promptly from our partner network. Special-order items either aren’t currently stocked or are built to your spec — expect 4–6 weeks. If a part goes on backorder while your order is in the queue, we’ll reach out and work through discounted alternatives together.

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