GrimmSpeed Subaru 2015-21 VA WRX/STI “Gentleman’s Exhaust” V2 Catback System – Resonated
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A Return to Form, Refined
The GrimmSpeed Gentleman’s Exhaust returns with a redesigned Version 2 layout focused on fitment, longevity, and maintaining a clean, refined exhaust note. Built around the original “gentleman’s exhaust” concept, this system delivers a balanced tone that avoids drone while still providing a strong, confident presence.
Key updates include dual-overlapping slip fit connections and a revised dual-hanger mid-pipe, allowing for greater adjustability during installation and more precise alignment on a per-chassis basis. Internally, the upgraded muffler design features larger perforated cores and an improved Y-splitter to increase flow, paired with a durable packing configuration that resists breakdown over time.
The resonated version is ideal for drivers planning additional exhaust modifications. It helps maintain a smoother, more controlled sound profile as airflow increases throughout the system, making it the better choice for more heavily modified setups.
Quick Specs
304 stainless steel construction for all exhaust components
409 stainless steel double-overlap slip fit clamps
TIG welded construction for strength and consistency
Custom mufflers with twin-tube perforated core design for increased flow
Updated internal Y-splitter and long-life packing material to maintain tone over time
Quad 3.5-inch exhaust tips
Resonated mid-pipe for smoother, more controlled exhaust tone
Dual-overlapping stainless steel slip fit connections for improved sealing and adjustability
Dual-hanger mid-pipe design for chassis-specific fitment dialing
Stainless steel braided flex section for compatibility across exhaust setups
Includes polyurethane exhaust hangers for added stability and reduced movement
Includes 304 stainless steel 2-bolt MLS gasket
Fitment
2015–2021 Subaru WRX (VA Chassis)
2015–2021 Subaru STI (VA Chassis)
What’s in the Box
2x GrimmSpeed Mufflers
1x GrimmSpeed Y-Pipe
1x GrimmSpeed Resonated Mid-Pipe
2x 2.5” Stainless Steel Double Overlap Slip Fit Clamps with Hardware
1x 3” Stainless Steel Double Overlap Slip Fit Clamp with Hardware
1x GrimmSpeed 2-Bolt MLS Gasket
2x M10 Bolts
2x M10 Nuts
2x GrimmSpeed License Plate Frames
1x GrimmSpeed Decal