MXP COMP RS EXHAUST SCION IMMXCRIM The Comp RS Exhaust System line from MXP introduces a more aggressive sounding system at a lower price. It's the perfect exhaust for those seeking outright performance without the premium cost of other systems. Even though it is a value minded system, the Comp RS Exhaust System line still features many of the same advantages as the SP Spec Exhaust System line. Features: Material: T409 Stainless Steel Construction Layout Weld Type: Four piece