Exhaust Straight Pipes for Nissan 350Z Infiniti G35 (2003-2007) 3.5L Engine

High-Flow T-304 Exhaust Straight Pipes for 2003-2007 Nissan 350Z & Infiniti G35 (VQ35DE/Z33/V35)

What it Does: These 2.5-inch stainless steel straight pipes replace the restrictive factory catalytic converters to maximize exhaust gas velocity and eliminate backpressure in VQ35DE-equipped RWD platforms.

The Stock 350Z & G35 Exhaust Bottleneck

The factory exhaust system on the Z33 and V35 chassis utilizes heavy, restrictive catalytic converters designed for emission compliance rather than flow efficiency. These OEM units contain dense ceramic substrates that create significant turbulence and backpressure, especially as RPMs climb toward the VQ35DE's redline. This restriction forces the engine to work harder during the exhaust stroke, increasing exhaust gas temperatures (EGTs) and robbing the vehicle of potential horsepower and torque. Over time, these ceramic cores can degrade or clog, further hindering performance and altering the engine's thermal management capabilities.

The Engineering Solution

This straight pipe kit is engineered from high-grade T-304 stainless steel, featuring computerized mandrel bends that maintain a consistent 2.50-inch internal diameter throughout the entire geometry. Unlike traditional crush-bending, which narrows the pipe at the apex of the curve, mandrel bending ensures laminar flow and minimizes internal drag. The pipes include dual O2 sensor bungs to accommodate factory sensors and are finished in a chrome-polished coating for superior oxidation resistance and heat tolerance. By removing the cellular obstruction of the stock cats, these pipes allow for a direct, high-velocity exit for exhaust pulses, significantly improving volumetric efficiency and delivering a raw, aggressive acoustic profile characteristic of the VQ engine family.

Technical Specifications

Compatibility

• 2003-2006 Nissan 350Z VQ35DE RWD (Except 2005 35th Anniversary Edition)
• 2003-2007 Infiniti G35 3.5L V6 RWD
• Fits Coupe and Sedan VQ35DE models

The Nissan & Infiniti Performance Standard

The VQ-series engine is world-renowned for its throttle response and distinct exhaust note. These straight pipes are a foundational upgrade for JDM enthusiasts looking to optimize flow for naturally aspirated builds or as a prerequisite for forced induction. The direct bolt-on design ensures a secure seal with the provided hardware, providing a professional-grade mechanical solution for track-focused Z and G chassis builds.