Invidia N1 Single Exit Cat Back Exhaust w/Bead Blasted Piping - Titanium Tip - 2015-2021 Subaru WRX / STI

The N1 Sound With a Finish That Stands Out

The Invidia N1 Single Exit Cat-Back Exhaust with Bead Blasted Piping and Titanium Tip for the 2015-2021 Subaru WRX / STI delivers the well-known N1 exhaust character — SUS304 stainless, 3-inch mandrel-bent piping, CNC-machined flanges, direct OEM hanger fitment — with a matte bead blasted pipe finish that contrasts against the Titanium tip. The bead blasted texture ages better than polished stainless on a car that sees real use — it won't show road grime and heat discoloration the way a mirror finish does.

SUS304 Stainless, Mandrel Bends, CNC Flanges

Every Invidia N1 cat-back is built from SUS304 stainless steel with mandrel bends throughout — a process that maintains the full 3-inch internal diameter through every curve in the system. CNC-machined flanges at every connection point ensure flat, leak-free sealing. The exhaust hangers are welded directly at OEM hanger locations, so the system sits in the correct position without fitment adjustment at installation.

Included Silencer — Two Volume Settings in One System

The included silencer inserts into the exit tip to reduce sound output for commuting, city driving, or events with noise limits — remove it for the full N1 sound character when the situation allows. Most cat-backs offer one sound level; the N1 with silencer gives you two. The N1 connects at the OEM downpipe flange and runs to the factory tip exit location on the VA WRX/STI using the factory hanger positions. No modification required — new gaskets and hardware are included.

Key Features

• Platform: 2015-2021 Subaru WRX / STI
• SUS304 stainless steel construction
• 3-inch mandrel-bent piping — full diameter maintained at every bend
• Single exit — Titanium tip
• CNC-machined flanges — flat, leak-free sealing at all connection points
• Exhaust hangers welded at OEM locations — direct bolt-in fitment
• Bead blasted pipe finish — matte industrial texture
• Silencer included — adjustable sound output
• Improves horsepower, torque, and throttle response
• New gaskets and hardware included

Fitment Notes

• Platform: 2015-2021 Subaru WRX / STI
• Direct bolt-in at OEM downpipe flange and hanger locations
• No modification to the vehicle required
• Silencer included for reduced sound output when needed

Straight From Subispeed

The Invidia N1 is consistently the exhaust we recommend to VA WRX/STI owners who want a system that sounds right without becoming a liability on the street. The bead blasted pipe finish is particularly worth choosing if the car sees regular daily use — polished stainless looks great at a car show but shows every bit of road grime and heat tint over time. The included silencer is a genuine feature — the option to turn it down without touching hardware is more useful than it sounds when you're dealing with varying real-world situations. New gaskets and hardware are in the box, and the OEM hanger fitment means installation is straightforward.

What's Included

• Invidia N1 cat-back exhaust — single exit
• Titanium exhaust tip
• New gaskets and installation hardware
• Silencer

About Invidia

Invidia is a Taiwanese performance exhaust manufacturer with a strong following in the Subaru, Mitsubishi, and Japanese sports car communities. Their catalog covers cat-back exhausts, downpipes, headers, manifolds, and full exhaust systems built around SUS304 stainless steel construction with CNC-machined flanges and direct OEM fitment. Invidia exhausts are among the most widely installed aftermarket systems on Subaru platforms globally — well-documented, well-supported, and proven across thousands of street and track builds. Subispeed carries the full Invidia lineup because their combination of quality construction, fitment accuracy, and range of tip and finish options makes them the exhaust brand we recommend to Subaru owners at nearly every power level.