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GrimmSpeed Catted Downpipes Subaru WRX & STi '08+

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GrimmSpeed now only offers catted downpipes for the 08+ Subaru WRX, STI, Legacy GT, and Forester XT. These downpipes feature 3" 16ga 304L Stainless Steel tubing and use 1/2" flanges for superior strength and durability. Both downpipes utilize a divorced wastegate configuration for optimal flow. A 3" 2 bolt flange is used to connect the downpipe to most aftermarket exhaust systems as well. Unleash hidden power with a GrimmSpeed downpipe! 

Features and Benefits 

- 3" 16ga 304L Stainless Steel Construction 

-Proudly made in the USA - Design, Materials and Fabrication 

-FARO Arm Designed 

-1/2" Flanges 

-O2 Bungs for factory sensor and aftermarket wideband AFR 

-Divorced Wastegate for Optimal flow 

-GrimmSpeed Gaskets Included 


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