Welcome to the official GReddy USA blog: New Universal GReddy Supreme Greddy Revolution RS Universal Exhaust Muffler 3" Inlet 4.5" Removable Universal Stainless Steel Car Exhaust Muffler Tip Interface 67mm Slant 51mm Universal Exhaust System End Pipe Stainless Steel Car exhaust GReddy Titanium Tip 105mm Dia. L 120mm, Std. Revolution RS 1100211. 1x Revolution RS 51mm or 38mm Dia. Muffler Silencer for GReddy Revolution RS 105mm Tip *(also compatible with most (160mm dia.) GPP RS RACE & GPP RS Ti mufflers) Maintain straight through flow, with more muffler sound suppression. Tip Cup Dia.: 103mm (4. 0") Silencer Pipe Dia.: 51mm (2. 0") Pipe Length: 300mm (11. 8") Material: 304 Stainless steel Mounting pattern: Revolution RS Tri mounting *115mm available in Silencer Pipe Diameters 51mm or 43mm *105mm available in Silencer Pipe Diameters 51mm or 38mm Fits most GReddy Revolution RS, GPP RS Race & GPP RS Ti 2. 5" 140mm dia mufflers. Call to check compatibility with your application. (949) 588 8300 Notes: Requires 3mm Allen Head driver and 8mm wrench socket to install ** Not compatible with Universal Revolution RS with weld on tips.