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🇺🇸 Closed June 29 – July 5. Order by 2:00 PM PT today to ship before the holiday. Back July 6. Happy 4th!
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Mufflers, Resonators & Catalytic Converters

Ace Race Parts stocks and distributes a wide variety of mufflers, resonators, and high flow catalytic converters from brands like G-Sport, Vibrant Performance, and Ace Race Parts. Mufflers, muffler resonators, and catalytic converters are an essential part of an exhaust system and are offered in conjunction with the Ace Race... Read More
G-Sport GESI Gen1 EPA Compliant Catalytic Converter Core - 4.000" Body x 4.000" Long - 300 CPSI (50000) - Ace Race Parts

G-Sport Gen1 HO EPA Compliant Catalytic Converter Core - 4.000" Body x 4.000" Long (50002)

SKU GSP50002
$ 600.56 - $ 600.56
$ 600.56
$ 600.56 - $ 600.56
$ 600.56
Only 4 left!

GESI G-Sport part number 25001 is ONLY the Catalytic Core. G-Sport Transition Cones are sold separately. G-Sport Gen1 HO EPA Compliant Catalytic Co...

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G-Sport GESI Gen1 EPA Compliant Catalytic Converter Core 6 Pack - 4.000" Body x 4.000" Long - 300 CPSI (650002) - Ace Race Parts

G-Sport Gen1 HO EPA Compliant Catalytic Converter Core 6 Pack - 4.000" Body x 4.000" Long (650002)

SKU GSP650002
$ 3,099.00 - $ 3,099.00
$ 3,099.00
$ 3,099.00 - $ 3,099.00
$ 3,099.00
In stock

GESI G-Sport part number 625001 is ONLY the Catalytic Core. G-Sport Transition Cones are sold separately. G-Sport Gen1 HO EPA Compliant Catalytic C...

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G-Sport GESI Gen1 EPA Compliant Catalytic Converter Core - 4.500" Body x 4.000" Long - 300 CPSI (85000) - Ace Race Parts

G-Sport Gen1 UHO EPA Compliant Catalytic Converter Core - 4.500" Body x 4.000" Long (85002)

SKU GSP85002
$ 710.43 - $ 710.43
$ 710.43
$ 710.43 - $ 710.43
$ 710.43
Only 2 left!

GESI G-Sport part number 85002 is ONLY the Catalytic Core. G-Sport Transition Cones are sold separately. G-Sport Gen1 UHO EPA Compliant Catalytic C...

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G-Sport GESI Gen1 EPA Compliant Catalytic Converter Core 6 Pack - 4.000" Body x 4.000" Long - 300 CPSI (650002) - Ace Race Parts

G-Sport Gen1 UHO EPA Compliant Catalytic Converter Core 6 Pack - 4.500" Body x 4.000" Long (685002)

SKU GSP685002
$ 3,595.00 - $ 3,595.00
$ 3,595.00
$ 3,595.00 - $ 3,595.00
$ 3,595.00
In stock

GESI G-Sport part number 85002 is ONLY the Catalytic Core. G-Sport Transition Cones are sold separately. G-Sport Gen1 UHO EPA Compliant Catalytic C...

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G-Sport GESI Gen2 EPA Compliant Catalytic Converter Core - 4.000" Body x 4.000" Long - 400 CPSI (50200) - Ace Race Parts

G-Sport Gen2 EPA Compliant Catalytic Converter Core - 4.000" Body x 4.000" Long (50200)

SKU GSP50200
$ 600.56 - $ 600.56
$ 600.56
$ 600.56 - $ 600.56
$ 600.56
Only 7 left!

GESI G-Sport part number 50200 is ONLY the Catalytic Core. G-Sport Transition Cones are sold separately. G-Sport Gen2 EPA Compliant Catalytic Conve...

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G-Sport GESI Gen2 EPA Compliant Catalytic Converter Core - 4.500" Body x 4.000" Long - 400 CPSI (85200) - Ace Race Parts

G-Sport Gen2 EPA Compliant Catalytic Converter Core - 4.500" Body x 4.000" Long (85200)

SKU GSP85200
$ 710.43 - $ 710.43
$ 710.43
$ 710.43 - $ 710.43
$ 710.43
Only 3 left!

GESI G-Sport part number 85200 is ONLY the Catalytic Core. G-Sport Transition Cones are sold separately. G-Sport Gen2 EPA Compliant Catalytic Conve...

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G-Sport GESI Gen2 EPA Compliant Catalytic Converter Core - 5.000" Body x 4.000" Long - 400 CPSI (85500) - Ace Race Parts
Sold out

G-Sport Gen2 EPA Compliant Catalytic Converter Core - 5.000" Body x 4.000" Long (85500)

SKU GSP85500
$ 835.36 - $ 835.36
$ 835.36
$ 835.36 - $ 835.36
$ 835.36
Out of stock

GESI G-Sport part number 85500 is ONLY the Catalytic Core. G-Sport Transition Cones are sold separately. G-Sport Gen2 EPA Compliant Catalytic Conve...

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G-Sport GESI Gen2 EPA Compliant Catalytic Converter Core - 6.000" Body x 4.000" Long - 400 CPSI (85600) - Ace Race Parts

G-Sport Gen2 EPA Compliant Catalytic Converter Core - 6.000" Body x 4.000" Long (85600)

SKU GSP85600
$ 1,041.57 - $ 1,041.57
$ 1,041.57
$ 1,041.57 - $ 1,041.57
$ 1,041.57
Only 4 left!

GESI G-Sport part number 85600 is ONLY the Catalytic Core. G-Sport Transition Cones are sold separately. G-Sport Gen2 EPA Compliant Catalytic Conve...

View full details
G-Sport GESI Gen1 EPA Compliant Catalytic Converter Core 6 Pack - 4.000" Body x 4.000" Long - 300 CPSI (650002) - Ace Race Parts

G-Sport Gen2 EPA Compliant Catalytic Converter Core 6 Pack - 4.500" Body x 4.000" Long (685200)

SKU GSP685200
$ 3,695.00 - $ 3,695.00
$ 3,695.00
$ 3,695.00 - $ 3,695.00
$ 3,695.00
In stock

GESI G-Sport part number 85200 is ONLY the Catalytic Core. G-Sport Transition Cones are sold separately. G-SPORT EMISSIONS SYSTEMS - DESIGNED FOR P...

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G-Sport GESI Gen1 EPA Compliant Catalytic Converter Core 6 Pack - 4.000" Body x 4.000" Long - 300 CPSI (650002) - Ace Race Parts

G-Sport Gen2 EPA Compliant Catalytic Converter Core 6 Pack- 4.000" Body x 4.000" Long (650200)

SKU GSP650200
$ 3,425.00 - $ 3,425.00
$ 3,425.00
$ 3,425.00 - $ 3,425.00
$ 3,425.00
In stock

GESI G-Sport part number 50200 is ONLY the Catalytic Core. G-Sport Transition Cones are sold separately. G-Sport Gen2 EPA Compliant Catalytic Conve...

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