Mine's Silence-VX Pro Titan II Exhaust

Price: $5645 /&nbsp;?? yen
Main Diameter: 80mm / 3.15"
Tip Diameter: 120mm / 4.72" (x4)
Exit Diameter: 70mm / 2.76" (x2)
Design: Single w/ Dual Muffler
Material: Titanium
Weight: ??lb /&nbsp;??kg
Manufacturer: Mines

From NAGTROC

This is the Mines titanium exhaust system for the Nissan R35 GT-R. The Silence VX-Pro Titan II is an ultra lightweight, all titanium system designed to increase performance and response throughout the rev range. The system meets the stringent JASMA regulations, and offers uncompromisable quality and durability.