Invidia N1 Racing Series Single Exit Cat-Back Exhaust - Titanium Tip - 2015-2021 Subaru WRX / STI

Racing Series: Track Spec, Street Fitment

The Invidia Racing Series Cat-Back Exhaust with Titanium Tip for the 2015-2021 Subaru WRX / STI is the aggressive end of the Invidia street catalog — designed for builds that spend serious time on track or at weekend events where maximum exhaust flow and a track-oriented sound character are the priorities. Larger diameter piping, less restriction, and a sound profile that reflects the racing series designation. SUS304 stainless construction, mandrel-bent piping, CNC-machined flanges, OEM hanger fitment.

More Flow, More Sound — Deliberately So

The Racing Series is louder and less restricted than the standard N1 — that's the point. For builds targeting higher power output, the racing series piping diameter provides less backpressure at the turbine outlet, supporting better spool and top-end power delivery. The sound character suits a car that's primarily a weekend and track machine rather than a daily commuter.

Bolt-In at OEM Hanger Locations

Despite the track-oriented character, the Racing Series installs at the factory downpipe flange and OEM hanger positions on the VA WRX/STI — same installation as any other Invidia cat-back, 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
• 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

Straight From Subispeed

The Invidia Racing Series is for VA WRX/STI owners who use the car on track and want an exhaust that reflects that use. It's louder than the N1 and less suited to daily driving — if you commute in this car, that's worth knowing before ordering. If the car primarily sees weekend use, track days, and spirited driving, the Racing Series is the exhaust that matches that character.

What's Included

• Invidia Racing Series cat-back exhaust
• Titanium exhaust tip
• New gaskets and installation hardware

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.