Exhaust Downpipes & Headers - Down Pipes

3" Down Pipe with a 46mm Wastegate and Boost controller Combo

MSRP:

Was:

Now: $649.00

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3" Down Pipe with a Flat Flange no Wastegate

MSRP:

Was:

Now: $399.00

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3" Down Pipe with a V-Band 46mm External Wastegate

MSRP:

Was:

Now: $585.00

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3" Down Pipe with Internal Wastegate
3.5" Down Pipe with a V-Band 46mm External Wastegate

MSRP:

Was:

Now: $650.00

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3.5" Down pipe with Flat Flange

MSRP:

Was:

Now: $399.00

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3.5" Down pipe with V-Band flange

MSRP:

Was:

Now: $399.00

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4 INCH V BAND AND CLAMP

MSRP:

Was:

Now: $45.00

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Boost Controller

MSRP:

Was:

Now: $99.00

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Porting Exhaust Housing

MSRP:

Was:

Now: $0.00
Precision GEN 2 46mm Wastegate

MSRP:

Was:

Now: $399.00

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3" Down Pipe with a 46mm Wastegate and Boost controller Combo

This is a GN1Performance "3 INCH 46mm EXTERNAL WASTEGATE DOWN PIPE and BOOST CONTROLLER COMBO " for a 1986 or 1987 Buick Grand National, T Type, Turbo T, or GNX 3.8 liter turbo V6. This 3" Inch...

MSRP:

Was:

Now: $649.00

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3" Down Pipe with a Flat Flange no Wastegate

This is a GN1Performance "3 INCH FLAT FLANGE DOWN PIPE WITH " for a 1986 or 1987 Buick Grand National, T Type, Turbo T, or GNX 3.8 liter turbo V6. This 3" Inch Down Pipe with a Flat Flange and...

MSRP:

Was:

Now: $399.00

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3" Down Pipe with a V-Band 46mm External Wastegate

This is a GN1Performance "3 INCH 46mm EXTERNAL WASTEGATE DOWN PIPE" for a 1986 or 1987 Buick Grand National, T Type, Turbo T, or GNX 3.8 liter turbo V6. This 3" Inch External Wastegate Down Pipe is constructed out of 304 stainless...

MSRP:

Was:

Now: $585.00

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3" Down Pipe with Internal Wastegate

This is a GN1Performance "3 INCH INTERNAL WASTEGATE DOWN PIPE " for a 1986 or 1987 Buick Grand National, T Type, Turbo T, or GNX 3.8 liter turbo V6. This 3" Inch Internal Wastegate Downpipe is designed to work with...
3.5" Down Pipe with a V-Band 46mm External Wastegate

This is a GN1Performance "3.5 INCH EXTERNAL WASTEGATE DOWN PIPE WITH A 46mm WASTEGATE" for a 1986 or 1987 Buick Grand National, T Type, Turbo T, or GNX 3.8 liter turbo V6.This is our all new 3.5" Inch External wastegate downpipe...

MSRP:

Was:

Now: $650.00

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3.5" Down pipe with Flat Flange

This is a GN1Performance "3.5 INCH INCH FLAT FLANGE DOWN PIPE" for a 1986 or 1987 Buick Grand National, T Type, Turbo T, or GNX 3.8 literb turbo V6. This is our all new 3.5" Inch Flat Flange Downpipe constructed out of 304 stainless steel...

MSRP:

Was:

Now: $399.00

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3.5" Down pipe with V-Band flange

This is a GN1Performance "3.5 INCH V-BAND DOWN PIPE" for a 1986 or 1987 Buick Grand National, T Type, Turbo T, or GNX 3.8 liter turbo V6. This is our all new 3.5" Inch V-Band Flange Downpipe constructed out of 304 stainless steel. All tig...

MSRP:

Was:

Now: $399.00

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4 INCH V BAND AND CLAMP

This is a "V-BAND AND CLAMP COMBO" kit comes with a stainless steel v band ring and a heavy duty t clamp. This is a great item for those who would like to build their own custom down pipes.

MSRP:

Was:

Now: $45.00

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Boost Controller

This is a Boost Controller which is good for up to 50psi. It comes complete with all the hardware, fittings, and mounting brackets necessary. *Please note, all manual boost controllers are to be used with EXTERNAL wastegates only.

MSRP:

Was:

Now: $99.00

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Porting Exhaust Housing

This is a picture to show how much your exhaust port should be ported when going with an aftermarket external down pipe.

MSRP:

Was:

Now: $0.00
Precision GEN 2 46mm Wastegate

This is a "Precision PTE GEN 2 46mm Wastegate" for a 1986 or 1987 Buick Grand National, T Type, Turbo T, or GNX 3.8 liter turbo V6. Precision Turbo and Engine Gen2 Wastegates Precision Turbo and Engine Gen2 wastegates are high-quality, economical, and...

MSRP:

Was:

Now: $399.00

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