Product Weight: 35 lbs. Our Toyota GR Corolla Titanium Exhaust is made from 2.75-inch diameter titanium tubing. The system replaces the factory main cat-back section of the exhaust, eliminating the secondary catalytic converter. In its place is a megaphone section that delivers a distinctive sound, paired with our proprietary mid-section featuring an unequal-length Y-pipe split-and-merge design with a 2.75-inch main tube diameter and 2-inch secondary Y-pipe diameter. This configuration creates a sound unlike any other. By offsetting the exhaust pulses and remerging them, the system achieves a cleaner tone while reducing drone in the low to mid rev range for a more comfortable drive at highway cruising speeds. The rear section features our quad carbon fiber exhaust tips while retaining full OEM exhaust valve functionality. The outer two tips measure 4 inches each, while the inner two tips measure 3.25 inches each, creating an aggressive yet balanced rear appearance. This titanium exhaust system will increase the volume by about 20-30%. In our testings, the idle volume increased about 20 dB during idle, and 25 dB at the top end.