Tomei Full Titanium Muffler Kit Expreme Ti Exhaust – Mazda MX-5 Miata NB. B6-ZE, BP-ZE, BP-VE. #TB6090-MZ02A. Tomei Pipe Size 2.38inch (60.5mm). Tomei Tip Size 3.50inch (89.1mm). Stock Pipe Size 1.96inch (50.0mm). Stock Tip Size 2.36inch (60.0mm). Tomei Exhaust weight 19.2lbs (8.7kg). Includes removable Silencer.