{"id":1205,"date":"2026-09-18T17:29:02","date_gmt":"2026-09-18T09:29:02","guid":{"rendered":"https:\/\/www.ruituautoparts.com\/?p=1205"},"modified":"2026-09-18T17:29:02","modified_gmt":"2026-09-18T09:29:02","slug":"stainless-steel-catback-exhaust-system-valved-performance-exhaust-pipe-for-lexus-is250-is300-is350-is350h-3-5l","status":"publish","type":"post","link":"https:\/\/www.ruituautoparts.com\/?p=1205","title":{"rendered":"Stainless Steel Catback Exhaust System, Valved Performance Exhaust Pipe for Lexus IS250 IS300 IS350 IS350H 3.5L"},"content":{"rendered":"\n
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Description<\/h3>\n\n\n\n

Upgrade your Lexus IS250, IS300, IS350, IS350H 3.5L with our 304 stainless steel valved catback exhaust system. Boost engine performance, enhance exhaust sound, direct bolt-on installation with zero modification.<\/p>\n\n\n\n

Product Description<\/h3>\n\n\n\n

The factory exhaust system for Lexus IS250, IS300, IS350 and IS350H 3.5L models features restrictive mufflers and narrow pipelines, creating excessive exhaust backpressure. This common factory flaw leads to sluggish throttle response, limited high-speed power and flat, muted exhaust sound, restricting the original engine\u2019s overall performance.<\/p>\n\n\n\n

Our upgraded valved catback exhaust is professionally engineered for Lexus 3.5L series models. Built with premium T304 stainless steel and seamless mandrel bent pipes with precise TIG welding, it delivers outstanding high-temperature resistance, anti-rust and anti-corrosion performance for long-term road use. The optimized high-flow structure greatly reduces exhaust resistance, accelerates exhaust gas flow, improves engine ventilation and effectively boosts power and torque output. Equipped with wireless remote control valves, it switches between quiet daily driving mode and aggressive sport sound mode, eliminating annoying highway drone. 100% OEM mounting design enables non-destructive bolt-on installation, perfect for daily driving and light performance tuning.<\/p>\n\n\n\n

Product Specifications<\/h3>\n\n\n\n
Model Code<\/strong><\/td>For lexus <\/td><\/tr>
Compatible Vehicles<\/strong><\/td>Lexus IS250 \/ IS300 \/ IS350 \/ IS350H<\/td><\/tr>
Engine<\/strong><\/td>3.5L Naturally Aspirated<\/td><\/tr>
Material<\/strong><\/td>304 Stainless Steel<\/td><\/tr>
Type<\/strong><\/td>Valved Catback Exhaust<\/td><\/tr>
Installation<\/strong><\/td>Direct Bolt-On, No Cutting<\/td><\/tr><\/tbody><\/table><\/figure>\n\n\n\n

FAQ<\/h3>\n\n\n\n

Q1: Will this exhaust fit all Lexus IS 3.5L models?<\/strong><\/p>\n\n\n\n

A: Perfectly compatible with IS250, IS300, IS350 and IS350H 3.5L full series, precise OEM fitment.<\/p>\n\n\n\n

Q2: Does it cause check engine light errors?<\/strong> <\/p>\n\n\n\n

A: Retains all original sensors and emission components, no CEL or fault codes after installation.<\/p>\n\n\n\n

Q3: Is ECU tuning required after upgrade?<\/strong> <\/p>\n\n\n\n

A: No tuning required. It upgrades sound quality and throttle response directly for stock vehicles.<\/p>\n\n\n\n

Q4: Does it produce uncomfortable resonance?<\/strong><\/p>\n\n\n\n

A: Professionally tuned internal structure eliminates low-frequency drone, ensuring comfortable daily driving.<\/p>\n\n\n\n

<\/p>\n","protected":false},"excerpt":{"rendered":"

Description Upgrade your Lexus IS250, IS300, IS350, IS3 […]<\/p>\n","protected":false},"author":1,"featured_media":1212,"comment_status":"closed","ping_status":"closed","sticky":false,"template":"","format":"standard","meta":{"footnotes":""},"categories":[7],"tags":[],"class_list":["post-1205","post","type-post","status-publish","format-standard","has-post-thumbnail","hentry","category-exhaust-system"],"_links":{"self":[{"href":"https:\/\/www.ruituautoparts.com\/index.php?rest_route=\/wp\/v2\/posts\/1205","targetHints":{"allow":["GET"]}}],"collection":[{"href":"https:\/\/www.ruituautoparts.com\/index.php?rest_route=\/wp\/v2\/posts"}],"about":[{"href":"https:\/\/www.ruituautoparts.com\/index.php?rest_route=\/wp\/v2\/types\/post"}],"author":[{"embeddable":true,"href":"https:\/\/www.ruituautoparts.com\/index.php?rest_route=\/wp\/v2\/users\/1"}],"replies":[{"embeddable":true,"href":"https:\/\/www.ruituautoparts.com\/index.php?rest_route=%2Fwp%2Fv2%2Fcomments&post=1205"}],"version-history":[{"count":1,"href":"https:\/\/www.ruituautoparts.com\/index.php?rest_route=\/wp\/v2\/posts\/1205\/revisions"}],"predecessor-version":[{"id":1213,"href":"https:\/\/www.ruituautoparts.com\/index.php?rest_route=\/wp\/v2\/posts\/1205\/revisions\/1213"}],"wp:featuredmedia":[{"embeddable":true,"href":"https:\/\/www.ruituautoparts.com\/index.php?rest_route=\/wp\/v2\/media\/1212"}],"wp:attachment":[{"href":"https:\/\/www.ruituautoparts.com\/index.php?rest_route=%2Fwp%2Fv2%2Fmedia&parent=1205"}],"wp:term":[{"taxonomy":"category","embeddable":true,"href":"https:\/\/www.ruituautoparts.com\/index.php?rest_route=%2Fwp%2Fv2%2Fcategories&post=1205"},{"taxonomy":"post_tag","embeddable":true,"href":"https:\/\/www.ruituautoparts.com\/index.php?rest_route=%2Fwp%2Fv2%2Ftags&post=1205"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}