• GrimmSpeed [15–21 WRX/STI] “Gentleman’s Exhaust” V2 Catback System – Resonated - JDMuscleCat Back Exhaust SystemGRM.1025.2.0
  • GrimmSpeed [15–21 WRX/STI] “Gentleman’s Exhaust” V2 Catback System – Resonated - JDMuscleCat Back Exhaust SystemGRM.1025.2.0
  • GrimmSpeed [15–21 WRX/STI] “Gentleman’s Exhaust” V2 Catback System – Resonated - JDMuscleCat Back Exhaust SystemGRM.1025.2.0
  • GrimmSpeed [15–21 WRX/STI] “Gentleman’s Exhaust” V2 Catback System – Resonated - JDMuscleCat Back Exhaust SystemGRM.1025.2.0
  • GrimmSpeed [15–21 WRX/STI] “Gentleman’s Exhaust” V2 Catback System – Resonated - JDMuscleCat Back Exhaust SystemGRM.1025.2.0
  • GrimmSpeed [15–21 WRX/STI] “Gentleman’s Exhaust” V2 Catback System – Resonated - JDMuscleCat Back Exhaust SystemGRM.1025.2.0
  • GrimmSpeed [15–21 WRX/STI] “Gentleman’s Exhaust” V2 Catback System – Resonated - JDMuscleCat Back Exhaust SystemGRM.1025.2.0

GrimmSpeed

GrimmSpeed

Gentleman's Exhaust V2 Cat-Back System - Resonated

Fits: 15-21 WRX/STI

$1,39900
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Pay over time available · Est. $43.72/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.

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GrimmSpeed Gentleman's Exhaust V2 Cat-Back System - Resonated
Fits: 15-21 WRX/STI

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Fitment

Please Note: Fits 2015-2021 Subaru WRX / WRX STI (VA). GrimmSpeed Gentleman's Exhaust V2; slip-fit connections (409 SS clamps), dual-hanger mid-pipe with braided flex section; twin-tube mufflers, larger perforated cores, improved Y-splitter; quad 3.5 in. tips; 304 SS TIG-welded; MLS gasket included. Part #GRM.1025.2.0.
  • 2015–2021 Subaru | WRX STI
  • 2015–2021 Subaru | WRX

Description

The GrimmSpeed Gentleman's Exhaust returns with a redesigned Version 2 layout focused on fitment, longevity, and a clean, refined exhaust note. Dual-overlapping slip-fit connections with 409 stainless clamps and a revised dual-hanger mid-pipe with a stainless braided flex section allow greater adjustability during installation and precise per-chassis alignment. Upgraded twin-tube mufflers with larger perforated cores and an improved Y-splitter increase flow, paired with long-life packing that resists breakdown over time.

  • Fits 2015-2021 Subaru WRX / WRX STI (VA)
  • V2 design: dual-overlapping slip-fit connections (409 SS clamps), revised dual-hanger mid-pipe with SS braided flex section
  • Twin-tube mufflers with larger perforated cores and improved Y-splitter
  • Quad 3.5 in. tips; polyurethane hangers; 304 SS 2-bolt MLS gasket included
  • Resonated version - smoother, more controlled sound; ideal for heavily modified setups
  • 304 stainless steel, TIG-welded
  • Part #GRM.1025.2.0

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