REMARK Axleback Exhaust. Lexus IS250 / IS300 / IS350 14-16. Stainless Double WallThis REMARK axleback kit eliminates the muffler canisters, and thereby unmutes the exhaust note. Produces a sporty and aggressive exhaust note. A cost effective way to inject more liveliness into your Lexus IS both audible and visually with the larger 4" tips. Offered in four variants which differ in tip finish and construction: FINISH Stainless Fully polished stainless steel to a high luster Burnt Stainless steel is treated to add a spectrum of