
GrimmSpeed Catback Exhaust for Subaru STI (2015-2021) Gentleman’s V2 - Resonated or Non-Resonated
GrimmSpeed Catback Exhaust for Subaru STI (2015-2021) Gentleman’s V2 - Resonated or Non-Resonated
Fitment Information
- Subaru WRX / WRX STI (2015, 2016, 2017, 2018, 2019, 2020, 2021)
Emissions Compliance
This part does not have a CARB EO and cannot be sold or shipped to California
Specs & Features
- 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
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
Product Description
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.
More Images







GrimmSpeed Catback Exhaust for Subaru STI (2015-2021) Gentleman’s V2 - Resonated or Non-Resonated
Fitment Information
- Subaru WRX / WRX STI (2015, 2016, 2017, 2018, 2019, 2020, 2021)
Emissions Compliance
This part does not have a CARB EO and cannot be sold or shipped to California
Specs & Features
- 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
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
Product Description
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.
Product Information
Product Information
Shipping & Returns
Shipping & Returns
Description
Fitment Information
- Subaru WRX / WRX STI (2015, 2016, 2017, 2018, 2019, 2020, 2021)
Emissions Compliance
This part does not have a CARB EO and cannot be sold or shipped to California
Specs & Features
- 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
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
Product Description
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.






















