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Aggressive Sound. Proven Power. Track-Ready Design.
The Invidia N1 Cat-Back Exhaust for the 2015–2021 Subaru WRX and STI Sedan offers a true race-inspired system designed for the performance enthusiast. This dual-outlet system features single-layer, rolled titanium tips and mandrel-bent stainless steel piping for maximum flow and a signature boxer rumble.
With 76mm piping that splits into dual 60mm pipes and 101mm titanium tips, this cat-back not only improves exhaust velocity and reduces back pressure, but also adds a bold, aggressive look to your WRX or STI. Made from premium SUS304 stainless steel, it’s built to withstand the elements and the track.
Perfect for enthusiasts seeking a noticeable performance bump and aggressive tone without sacrificing daily drivability, the Invidia N1 Cat-Back is a proven option for WRX and STI owners. Whether on the street or track, this system offers sound, power, and quality you can rely on.
Part Number: HS15STIGTT
Shipping
We utilize UPS, Fedex, and USPS for all of our shipping needs. Carrier choice is based upon availability and needs of the customer and is the sole discretion of SouthernCarParts. We always try to ship within 24 hours of order placement (do to the custom nature of some products, shipping within 24 hours is impossible, actual shipping time frames will be listed in the product description). Please keep in mind that some products such as Custom Fit Car Covers, Lloyds Floor Mats, Painted accessories, and Racemesh Products can take 3 -10 days to ship and are charged at time of order placement. Racemesh products take 4 weeks to ship as they are made to order.
Returns
Should you need to return a part for refund, exchange, or credit, please contact our returns department within 30 days of purchase at orders@southerncarparts.com for a Return Merchandise Authorization (RMA) number. Most problems, such as installation, can be solved with a telephone call (888-631-1433). Southern Car Parts will not accept returned goods without prior authorization and an RMA# written clearly on the exterior of the box. The customer is responsible for freight on all return orders. Parts authorized to be returned, on a non-exchange basis, are subject to a 20% restocking fee. Returns will only be accepted within 30 days of the original date of shipment. Custom painted parts - Once these parts are started, we can refund you less the paint(chemicals) that have been used. Exception is rear spoilers and front splitters, we can refund less 20%.
Custom-made-to-order items are NOT returnable. This includes embroidered floor mats, interior embroidered items, and car covers.
Damages in Shipping
All damages from shipping must be reported to Southern Car Parts within two business days from tracking number delivery confirmation. After two business days, damages become the responsibility of the customer.