SMY Axleback Exhaust Gasket & Hardware Kit 2002-2026 WRX / 2004-2021 STI | High-Grade Class 8 Hardware | Exhaust Gasket & Hardware Kit
Overview
The SMY Axleback Exhaust Gasket & Hardware Kit is designed specifically for Subaru WRX and WRX STI models spanning 2002 through 2026. This kit addresses common issues like rusted hardware and leaking exhaust gaskets, which can compromise exhaust sealing and performance. It’s an essential upgrade for enthusiasts replacing worn components or installing a used aftermarket catback exhaust with dual exit piping. The kit ensures a reliable, leak-free connection at the axleback flange, maintaining optimal exhaust flow and sound quality.
SMY pairs premium GrimmSpeed gaskets with high-grade Class 8 stainless steel hardware to deliver durability and longevity beyond OEM standards. The gaskets feature a 7-layer construction that is 22% thicker than factory parts, providing superior sealing under high heat and pressure conditions typical of Subaru turbocharged exhaust systems. The hardware’s corrosion resistance and strength prevent future rust issues, a common failure point in Subaru exhaust setups.
For Subaru owners, maintaining a tight exhaust seal is critical not only for performance but also for preventing exhaust leaks that can affect engine efficiency and cabin comfort. This kit’s robust construction and precise fitment ensure a straightforward replacement that restores factory-level reliability. Whether you’re refreshing your stock exhaust or upgrading to a performance catback, this gasket and hardware kit is a practical investment in your Subaru’s exhaust system integrity.
Features & Specifications
This SMY Axleback Exhaust Gasket & Hardware Kit is engineered for Subaru WRX and WRX STI models from 2002 to 2026, featuring GrimmSpeed 7-layer gaskets and Grade 8 stainless steel hardware. Constructed from premium multi-layer steel and high-strength stainless steel, it delivers superior sealing and corrosion resistance for Subaru enthusiasts seeking durable exhaust flange solutions.
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Brand: SMY
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Product: Axleback Exhaust Gasket & Hardware Kit 2002-2026 WRX / 2004-2021 STI
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Part Number: SMY-EXT-AXL
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Fitment: 2002-2026 Subaru WRX, 2004-2021 Subaru WRX STI
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Material: Multi-layer steel gasket, Grade 8 stainless steel hardware
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Finish: Natural stainless steel hardware finish
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Construction: 7-layer gasket, high-grade bolting hardware
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Origin: Not specified
Key Benefits
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Durability: High-grade Class 8 stainless steel bolts resist rust and corrosion, extending hardware life in harsh exhaust environments.
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Sealing Performance: GrimmSpeed 7-layer gaskets are 22% thicker than OEM, providing superior exhaust sealing and reducing leak potential.
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Fitment: Designed specifically for Subaru WRX and STI axleback exhaust flanges, ensuring a precise, OEM-level fit.
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Reliability: Prevents exhaust leaks that can affect engine performance and interior comfort.
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Maintenance: Ideal for replacing worn or damaged gaskets and hardware during exhaust upgrades or repairs.
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Value: Lifetime warranty on gaskets offers peace of mind for long-term ownership.
What's Included
- 2× GrimmSpeed 020031 2 Bolt 2.25" - 2.5" 7-layer Exhaust Gaskets
- 4× M10 x 1.25 Grade 8 Stainless Steel Bolts
- 4× M10 x 1.25 Stainless Steel Nuts
- 4× Stainless Steel Washers
Installation & Compatibility
Installation of the SMY Axleback Exhaust Gasket & Hardware Kit is straightforward for anyone with basic mechanical skills and common hand tools. The kit replaces the flange gaskets and mounting hardware on dual-exit axleback exhausts, making it a direct bolt-on upgrade without modifications. No special tools are required beyond standard wrenches or sockets. This kit is compatible with most Subaru WRX and STI models from 2002 to 2026, but verifying exact fitment for your specific year and exhaust setup is recommended. No tuning is required for installation.
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Professional Installation: DIY-Friendly
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Modifications Required: None
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Verify Compatibility: Confirm fitment for your specific year and exhaust configuration
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