The Revolution RS for the Mitsubishi Lancer GT is an aggressive looking, but mild sounding system. The large free-flow race axle-back provides excellent sound suppression for the 4B12 engine. It’s also our lightest system for the car. Like all GReddy Revolution RS systems the fully hand-welded 304 Stainless-Steel exhaust carries a Limited Lifetime Warranty.Type: axle-back systemNumber of pieces: 1pcPiping: 63.5mm (2.5″)Tip: 102mm (4.0″)Gasket(s): OEM (qty: 0 included)Resonator: n/aWeight: 9.5 lbs (Stock weight 15.5 lbs)Sound level: 92 dB(a)HP: +TBA hpTRQ: +TBA ft-lbs