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  • Nameless Performance [15 - 21 WRX, 15 - 18 STI] Catback w/ 3.5" Single Wall Neochrome Tips and 4" Mufflers | SUCB15WRX - 4MU - 35NEO - JDMuscleCat Back Exhaust SystemSUCB15WRX-4MU-35NEO
  • Nameless Performance [15 - 21 WRX, 15 - 18 STI] Catback w/ 3.5" Single Wall Neochrome Tips and 4" Mufflers | SUCB15WRX - 4MU - 35NEO - JDMuscleCat Back Exhaust SystemSUCB15WRX-4MU-35NEO
  • Nameless Performance [15 - 21 WRX, 15 - 18 STI] Catback w/ 3.5" Single Wall Neochrome Tips and 4" Mufflers | SUCB15WRX - 4MU - 35NEO - JDMuscleCat Back Exhaust SystemSUCB15WRX-4MU-35NEO

Nameless Performance

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Catback w/ 3.5" Single Wall Neochrome Tips and 4" Mufflers

Fits: 15-21 WRX, 15-18 STI

$2,13000
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Auto Parts Store of the Year 2026

Nameless Performance Catback w/ 3.5" Single Wall Neochrome Tips and 4" Mufflers
Fits: 15-21 WRX, 15-18 STI
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Fitment

Please Note: Part SUCB15WRX-4MU-35NEO; 4" mufflers; 3.5" single-wall neochrome tips. Fits 2015-2021 WRX (FA20 DIT) and 2015-2018 STI (EJ); not compatible with 2019+ STI models.
  • 2015–2021 Subaru | WRX STI
  • 2015–2021 Subaru | WRX

Description

Nameless Performance's cat-back exhaust for the 2015-2021 WRX and 2015-2018 STI (VA chassis) is hand-built in Washington around a torque-optimized 3" resonated main circuit feeding dual 2" rear circuits through a 2.25" Y-pipe — sized for midrange torque without the cabin drone of oversized systems. This configuration pairs 4" mufflers with 3.5" single-wall neochrome tips.

  • Part Number - SUCB15WRX-4MU-35NEO
  • Year / Make / Model - 2015-2021 Subaru WRX; 2015-2018 Subaru WRX STI
  • Chassis / Engine - VA; FA20 DIT (WRX), EJ-series (STI)
  • Mufflers - 4" compact mufflers packed with ceramic wool
  • Tips - 3.5" single-wall neochrome (burnt) tips
  • Piping - 3" resonated main circuit; 2.25" Y-pipe; dual 2" rear circuits
  • Materials - 100% T304 stainless steel; hand TIG welded
  • Sound / Power - +32 ft-lb torque and +22 whp at the wheels over a Stage 1 tune (EJ engine, per Nameless testing)
  • Included - Full catback assembly, installation hardware, urethane hanger bushings
  • Fitment Note - Direct bolt-on to factory or aftermarket downpipe; not compatible with 2019+ STI models

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