2015-2021 WRX Cat-Back Exhausts

Nameless Performance
Catback w/ 3" Double Wall Polished Tips and 5" Mufflers
Fits: 15-21 WRX, 15-18 STI

$2,01000

Pay over time · Est. $62.81/payment

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Illustrative estimate only, not a financing quote or guaranteed offer. Actual payments, frequency and terms vary by provider and eligibility. Taxes, shipping and add-ons are excluded.
Nameless Performance
Catback 3.5" Single Wall Polished Tips and No Muffler
Fits: 15-21 WRX, 15-18 STI

$1,82000

Pay over time · Est. $56.88/payment

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Illustrative estimate only, not a financing quote or guaranteed offer. Actual payments, frequency and terms vary by provider and eligibility. Taxes, shipping and add-ons are excluded.
Nameless Performance
Catback w/ 3.5" Single Wall Polished Tips and 5" Mufflers
Fits: 15-21 WRX, 15-18 STI

$2,07000

Pay over time · Est. $64.69/payment

ⓘ

Illustrative estimate only, not a financing quote or guaranteed offer. Actual payments, frequency and terms vary by provider and eligibility. Taxes, shipping and add-ons are excluded.
Nameless Performance
Catback w/ 4" Double Wall Polished Tips and 5" Mufflers
Fits: 15-21 WRX, 15-18 STI

$2,28000

Pay over time · Est. $71.25/payment

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Illustrative estimate only, not a financing quote or guaranteed offer. Actual payments, frequency and terms vary by provider and eligibility. Taxes, shipping and add-ons are excluded.
Nameless Performance
Catback 3.5" Single Wall Neochrome Tips and No Muffler
Fits: 15-21 WRX, 15-18 STI

$1,88000

Pay over time · Est. $58.75/payment

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Illustrative estimate only, not a financing quote or guaranteed offer. Actual payments, frequency and terms vary by provider and eligibility. Taxes, shipping and add-ons are excluded.
Nameless Performance
Catback w/ 3.5" Single Wall Neochrome Tips and 5" Mufflers
Fits: 15-21 WRX, 15-18 STI

$2,13000

Pay over time · Est. $66.56/payment

ⓘ

Illustrative estimate only, not a financing quote or guaranteed offer. Actual payments, frequency and terms vary by provider and eligibility. Taxes, shipping and add-ons are excluded.
Nameless Performance
Catback 3.5" Double Wall Polished Tips and No Muffler
Fits: 15-21 WRX, 15-18 STI

$1,76000

Pay over time · Est. $55.00/payment

ⓘ

Illustrative estimate only, not a financing quote or guaranteed offer. Actual payments, frequency and terms vary by provider and eligibility. Taxes, shipping and add-ons are excluded.
Nameless Performance
Catback w/ 3.5" Single Wall Neochrome Tips and 4" Mufflers
Fits: 15-21 WRX, 15-18 STI

$2,13000

Pay over time · Est. $66.56/payment

ⓘ

Illustrative estimate only, not a financing quote or guaranteed offer. Actual payments, frequency and terms vary by provider and eligibility. Taxes, shipping and add-ons are excluded.
Nameless Performance
Catback w/ 4" Double Wall Polished Tips and 4" Mufflers
Fits: 15-21 WRX, 15-18 STI

$2,28000

Pay over time · Est. $71.25/payment

ⓘ

Illustrative estimate only, not a financing quote or guaranteed offer. Actual payments, frequency and terms vary by provider and eligibility. Taxes, shipping and add-ons are excluded.
Nameless Performance
Track Package Catback w/ Raw Tip and No Muffler
Fits: 15-21 WRX, 15-18 STI

$1,01000

Pay over time · Est. $31.56/payment

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Illustrative estimate only, not a financing quote or guaranteed offer. Actual payments, frequency and terms vary by provider and eligibility. Taxes, shipping and add-ons are excluded.
Up to $129 off

In Stock

Revel
Medallion Ultra Ti Single Exit Titanium Cat-Back Exhaust
Fits: 08-21 WRX, 11-21 WRX STI

$1,16100~~$1,290.00~~ Save $129

Pay over time · Est. $36.28/payment

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Illustrative estimate only, not a financing quote or guaranteed offer. Actual payments, frequency and terms vary by provider and eligibility. Taxes, shipping and add-ons are excluded.
Up to $368.05 off

MBRP
3in Cat-Back Dual Split Rear Exit T304 Stainless Street Version
Fits: 15-21 WRX/STI

$92900~~$1,297.05~~ Save $368.05

Pay over time · Est. $29.03/payment

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Illustrative estimate only, not a financing quote or guaranteed offer. Actual payments, frequency and terms vary by provider and eligibility. Taxes, shipping and add-ons are excluded.
Up to $285.88 off

In Stock

MBRP
3inch Cat Back Dual Split Rear Exit T304 with Carbon Fiber Tips Street Version
Fits: 15-21 WRX/STI

Only 3 left

$1,21499~~$1,500.87~~ Save $285.88

Pay over time · Est. $37.97/payment

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Illustrative estimate only, not a financing quote or guaranteed offer. Actual payments, frequency and terms vary by provider and eligibility. Taxes, shipping and add-ons are excluded.
Magnaflow
Competition Catback Exhaust
Fits: 15-21 WRX/STI

$1,41300

Pay over time · Est. $44.16/payment

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Illustrative estimate only, not a financing quote or guaranteed offer. Actual payments, frequency and terms vary by provider and eligibility. Taxes, shipping and add-ons are excluded.
Up to $262.35 off

In Stock

MBRP
Armor Pro Race 3" Cat-Back Exhaust - Carbon Fiber Tips
Fits: 11-14 WRX/STI Sedan, 15-21 WRX/STI

Only 13 left

$1,11499~~$1,377.34~~ Save $262.35

Pay over time · Est. $34.84/payment

ⓘ

Illustrative estimate only, not a financing quote or guaranteed offer. Actual payments, frequency and terms vary by provider and eligibility. Taxes, shipping and add-ons are excluded.
Up to $133.05 off

Mishimoto
Stainless Steel Cat-Back Exhaust
Fits: 15-21 WRX/STI

$1,32695~~$1,460.00~~ Save $133.05

Pay over time · Est. $41.47/payment

ⓘ

Illustrative estimate only, not a financing quote or guaranteed offer. Actual payments, frequency and terms vary by provider and eligibility. Taxes, shipping and add-ons are excluded.

A cat-back exhaust replaces everything from the catalytic converter rearward on your 2015-2021 WRX — mid-pipe, resonator (if equipped), and mufflers. It is the single most popular first performance modification for a reason: meaningful sound transformation, a small but real power gain once tuned, and zero emissions or inspection concerns since all factory catalytic converters stay in place.

Start with tubing diameter. For a stock-turbo WRX, 3-inch systems are the standard and support everything up to moderate turbo upgrades. Larger diameters only help once you are making serious power; on a stock car they cost low-end response and add drone for no benefit. Material matters for longevity: T304 stainless steel is the baseline you should expect at this price point, while titanium saves 20-plus pounds but at a steep premium.

Sound level deserves honest thought about how you actually drive. "Mild" systems stay near stock at cruise with a deeper tone under load — the right pick for a daily driver. "Aggressive" systems are genuinely loud and will drone on the highway; great for weekends, tiring every day. Resonated mid-pipes tame rasp and drone without killing character, and they are worth the money on long-tube or equal-length header setups.

Tip finish — polished, burnt blue, matte black, or carbon fiber — is personal taste, but confirm tip size clears your bumper. Filter this collection by material, sound level, and resonated options to find the right system for your 2015-2021 WRX.