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ISR Performance

2.5-Inch Stainless Steel Exhaust Y-Pipe

$444.13 $313.50 Save $130.63

SKU: IS-Z33-Y-ISR

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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 ISR Performance Y-pipe is a 2.5-inch stainless steel exhaust component designed for the Nissan Z33 350z (2003-2009). It features bellowed flex sections and a velocity merge that steps up to 3-inch piping. An integrated dimpled gusset plate adds strength and rigidity.
Show original supplier description
The ISR Performance Y-pipe is constructed from 2.5-inch stainless steel piping, designed to connect catalytic converter flanges to a high-performance velocity merge. This Y-pipe then transitions to 3-inch stainless steel piping leading to the rear exhaust flange. It incorporates bellowed flex sections to manage exhaust system movement and an integrated dimpled gusset plate for enhanced structural integrity. This Y-pipe aims to optimize exhaust tone, maintain good ground clearance, and improve performance at an accessible price point. It is specifically designed for the Nissan Z33 350z (2003-2009) and the Infiniti G35 (Non-AWD / Non-X Models). It is not compatible with the AWD Infiniti G35X; owners of that model should use part number IS-Z34-Y. If you are unsure about your G35 variant, it is recommended to contact the seller before purchasing. Included in the box are the exhaust Y-pipe, two 2.5-inch 2-bolt exhaust gaskets, one 3-inch 2-bolt exhaust gasket, six nuts, and six bolts. The product is intended for racing vehicles and is legal in California only for such applications.

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

BrandISR Performance
Part NumberIS-Z33-Y-ISR
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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