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. Chassis: JA32U Engine: 4B12 Type: axle-back system Number of pieces: 1pc Piping: 63.5mm (2.5") Tip: 102mm (4.0") non-removable Gasket(s): OEM (qty: 0 included) Resonator: n/a Weight: 9.5 lbs (Stock weight 15.5 lbs) Sound level: 92 dB(a)