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CZP Cast Stainless Steel 5-Bolt 3" Bellmouth Downpipes - Nissan 300ZX Twin Turbo Z32

Manufacturer: CZP
Product # {{ productPartNumber }}

$ 999 00
$ 799 00
20% off

Manufacturer: CZP
Product # {{ productPartNumber }}
Product not eligible for promotional or discount codes.

Customer Questions

Question:

Are these coated not to rust? Or will they need ceramic coating to prevent that? Thank you - Carlos

Answer:

Hi Carlos, they are available uncoated or with ceramic coating. They are stainless steel, so aside from superficial oxidation that will happen on practically any exhaust part, they will not corrode even if uncoated.

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This product may not be legal for use on emissions-controlled motor vehicles in your area or region. Please check your local, state, and federal laws before ordering. Learn More

This product is intended for off-road/competition use, and may not be legal for use on highway or street vehicles in your area. Some products sold by Concept Z Performance may solely be used on vehicles in sanctioned competition, which may never be used upon a public road or highway, unless permitted by specific regulator exemptions (such as CARB E.O.).

It is the responsibility of the installer and/or user of the product to ensure that it is used in compliance with all applicable laws and regulations. Concept Z Performance holds no responsibility, either implied or otherwise, for any mechanical, electrical, or emissions failure resulting from using any aftermarket or performance products. Buyer assumes all risk of injury or loss which may result from using this product in a manner for which it is not intended.

Additional resources:
EPA Tampering Policy
SEMA Emissions Requirements by State

Options

$ 999 00
$ 799 00
20% off

Product not eligible for promotional or discount codes.

Description

First batch has sold out! Second batch expected to arrive March 2023!

The CZP Cast Bellmouth Downpipes were developed for high horsepower applications, where traditional split downpipes won't do the job. The open, free-flowing design is loosely inspired by popular high HP applications for the GT-R and other turbocharged Nissans.

As parts and tuning for the 300ZX have matured, more and more owners have dealt with boost creep issues as a result of the traditional "split" downpipe designs that have been commonplace for years. On split downpipes, the wastegate actuator often can't open enough for exhaust gas to escape, causing boost pressure to climb uncontrollably. This is especially common with downpipes with dividers, and on vehicles with larger turbos and/or major breather mods. This has caused owners to modify their downpipes, and manufacturers to modify their designs, both of which are quick fixes that rarely address flow restrictions and turbulence caused by these modifications.

Our open bellmouth design addresses this by providing a large open port the exact shape of the turbine outlet that gradually transitions to a tubular 3" (2.8" ID) section as it approaches the test pipe. Unlike hand-made downpipes constructed from various segments welded together, our design is fully 3D modeled then cast with no rough, abrupt junctions. Just a perfect, smooth transition, from flange to flange.

These downpipes are best suited for larger frame turbos, and those running higher boost. Where traditional split downpipes will become restrictive around at around 400hp, these excel in higher horsepower applications. Compared to traditional split 3" downpipes, expect to see a 5-10hp increase at around 16-18psi, and more at higher boost levels.

Fit most Garrett GT series turbos with 5 Bolt turbine housings, including:

* CZP/Zero G5, G5V, G6, G6X, G7, G7P, G7X
* JWT Sport 530, Sport 550, Sport 700
* Z1 GT535R, GT600R, GT675RS, GT725R, GT800R
* HKS 2530
* Garret GT2560, GT2860, GT2871, GT3071, GT3076, GTX2860, GTX2867

For extra thermal insulation, we also offer optional professional ceramic coating in both silver and black finishes.

Compatibility

Our new Compatibility checking feature is still being updated and revised. If you have questions about vehicle fitment, please contact us.

Customer Questions

Question:

Are these coated not to rust? Or will they need ceramic coating to prevent that? Thank you - Carlos

Answer:

Hi Carlos, they are available uncoated or with ceramic coating. They are stainless steel, so aside from superficial oxidation that will happen on practically any exhaust part, they will not corrode even if uncoated.

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