Greddy RS-TI Catback Exhaust

2015-2021 Subaru WRX & STI

Ships for free in the 48 states

SKU: 10168508

On order from MFG
Average time to ship: 9 business days

The RS-TI Cat-Back Exhaust System is a full-titanium exhaust system that will fit the Subaru WRX/STI. 


Greddy RS-TI Cat-Back Exhaust System

 RS-TI Specs:

  • Full lightweight and durable titanium construction
  • Designed utilizing intricate and precision "inch-welding"
  • Titanium mandrel bends
  • 80mm (3.14") piping diameter
  • 115mm (4.5") exhaust tip
  • Single-exit style
  • Beautifully accented in a burnt titanium finish
  • 2-bolt titanium flanges
  • Saves significant amounts of weight compared to the OEM exhaust
  • Improves horsepower and torque
  • Reduces turbo lag
  • Improves throttle response



The Greddy RS-TI Cat-Back Exhaust System features stunning full-titanium construction for the most discriminating of enthusiasts who demand the best in quality and performance. This exhaust system is pure titanium art that produces performance benefits as well. When a larger piping diameter is combined with limited bends, you have an unobstructed flow path for the exhaust gases to escape. 

This will increase the horsepower, the torque, all while reducing the turbo lag. Additionally, a full titanium exhaust system will generate a very distinct yet aggressive exhaust note. Additionally, because this is a full titanium exhaust system, you get substantial weight savings when compared to the OEM exhaust. The RS-TI is a complete bolt-on system with exhaust hangers welded onto the OEM locations, it will come with a pair of 4.5" exhaust tips. 

0 customer reviews

Average rating
(based on 0 reviews)
Ease of Installation
Fit / Quality
Overall Satisfaction

Write Your Own Review

Only registered users can write reviews. Please, log in or register


No questions have been asked about this product.

Upload images for this product