Akrapovic Porsche 911 GT3, GT3 Touring, GT3 RS & S/T Titanium Exhaust dB Reducer (991.1, 991.2 & 992.1)Get your Porsche 911 GT3, GT3 Touring, GT3 RS, or S T (models 991. 1, 991. 2, and 992. 1) ready for the track with the Akrapovi dB Reducer (Titanium), meticulously engineered to balance performance with compliance during track events. Crafted from high grade lightweight titanium, this precision engineered accessory acts as an additional muffler, expanding exhaust gases further to effectively lower dynamic sound levels by approximately 23 decibels*,