The Titan Series systems were introduced in order to offer our clients the absolute best exhaust products utilizing the latest manufacturing methods and exotic materials. The Titan series for the 997TT is the showcase unit for the Titan Series Line-up. Constructed from 625 Inconel ,a Superalloy commonly used in F1 racing and Aerospace due to its lightweight characteristics and ability to perform in the worlds most forbidding environments, The Titan Series is the Lightest most advanced system available for the 997TT. Weighing in at an uncomparable 21lbs with 200 cell cats , The Titan series employs all of the performance benefits of the sport system in a super durable lightweight unit that has no equal. This is the closest you will come to a F1 exhaust system for a street application Titan series systems are slightly louder than sport systems due to the thinner wall construction