Welcome to the official GReddy USA blog: New Universal GReddy Supreme GReddy Universal 115mm Tip Muffler Silencer Greddy Universal Titanium Muffler Greddy Revolution RS Universal Exhaust Muffler 2.5" Inlet 4" Removable GReddy Titanium Turndown Tip 115mm Dia. L 150mm Revised Revolution Greddy Revolution RS Universal Exhaust Muffler 3" Inlet 4.5" Removable. 1x Revolution RS 51mm or 43mm Dia. Muffler Silencer for GReddy Revolution RS 115mm 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.: 114mm (4. 48")Silencer Pipe Dia.: 51mm (2. 0")Pipe Length: 300mm (11. 8")Material: 304 Stainless steelMounting pattern: Revolution RS Tri mounting *115mm available in Silencer Pipe Diameters 51mm or 43mm *105mm available in Silencer Pipe Diameters 51mm or 38mmFits most GReddy Revolution RS, GPP RS Race & GPP RS Ti 3" 160mm dia mufflers. Call to check compatibility with your application. (949) 588 8300Notes: Requires 3mm Allen Head driver and 8mm wrench socket to install ** Not compatible with Universal Revolution RS with weld on tips.