Exhaust› Exhaust Pipes, Systems and Components

Fast Intentions

TDX Cat Back Exhaust System

$1,405.53

SKU: FI-370-CB-SS1x-xx

Special Order
Free Shipping over $200
$100 Minimum Order
Non-Returnable Item
INSTALL DIFFICULTY
DIY PRO SHOP

Moderate — 2–4 hours

Overview

The Fast Intentions TDX Cat Back Exhaust System is a performance upgrade for the 370Z. It enhances the factory exhaust sound, making it deeper, smoother, and louder. Built as a direct OEM replacement, it requires no cutting or welding for installation.

While unobtrusive at idle and cruising speeds, the exhaust note becomes more pronounced at wide-open throttle, contributing to a sportier and more aggressive vehicle appearance.
Show original supplier description
The Fast Intentions TDX Cat Back Exhaust System is a premier upgrade for 2009-2021 Nissan 370Z models (Base, Sport, Touring & NISMO) seeking to maximize performance from their VQ37VHR V6 engine. This system is meticulously crafted with 2.5" T-304 mandrel-bent stainless steel tubing and features 3/8" thick mild steel flanges, bright nickel plated to prevent corrosion and port-n-polished for smooth flow. The system includes standard 6" x 14" round polished stainless steel perforated core mufflers and 4.5" dual wall, resonated, polished stainless steel exhaust tips. For those seeking further customization, optional carbon fiber mufflers and 100-cell Mil Spec race catalytic converters (which reduce raw fuel smell with minimal performance impact) are available. The X Pipe section can be optioned with non-resonated or 12" or 18" resonated stainless steel perforated core resonators, designed to reduce interior noise without sacrificing performance. Installation is straightforward as a direct OEM replacement, requiring only simple hand tools with no cutting or welding necessary. The lowest point of the exhaust system remains at the same level as the OEM configuration. The system includes all necessary gaskets, hardware, and installation instructions. It is compatible with both Left and Right Hand Drive vehicles. This exhaust system offers significant performance benefits, including an average increase of 20 rear wheel horsepower and 11 foot pounds of torque over the factory exhaust. It refines the factory exhaust note by increasing depth and volume, and helps reduce Exhaust Gas Temperatures (EGTs) by freeing up back pressure. The stainless steel construction with optional carbon fiber mufflers results in a lighter system, weighing 41 lbs with CF mufflers and a 12" resonated X pipe (16 lbs lighter than factory), or 47 lbs with SS mufflers and a 12" resonated X pipe (10 lbs lighter than factory).

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.

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Specifications

BrandFast Intentions
Part NumberFI-370-CB-SS1x-xx
CategoryExhaust

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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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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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