GREDDY CATALOG RS TI GReddy Remark Muffler Delete 2015 WRX STI Stainless Steel Double GReddy Universal 2.5" RS Ti Oval Titanium Muffler With V Band GREDDY UNIVERSAL STAINLESS STEEL PIPE FOR 11001331 Go! Parts Parts. 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.: 38mm (1. 5") 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.