{"product_id":"53mm-diameter-motorcycle-catalyst","title":"53mm Diameter Motorcycle Catalyst","description":"\u003cstyle\u003e\n  .cat-faq-module {\n    max-width: 100%;\n    margin: 30px 0;\n    font-family: 'Segoe UI', Roboto, Arial, sans-serif;\n    background: #ffffff;\n    border-radius: 28px;\n    box-shadow: 0 8px 30px rgba(0, 0, 0, 0.06);\n    border: 1px solid #edf2f7;\n    padding: 30px 32px 10px 32px;\n    box-sizing: border-box;\n  }\n  .cat-faq-module .module-header {\n    display: flex;\n    align-items: center;\n    gap: 14px;\n    padding-bottom: 18px;\n    border-bottom: 3px solid #f0f4fa;\n    margin-bottom: 20px;\n  }\n  .cat-faq-module .module-header h2 {\n    font-size: 28px;\n    font-weight: 700;\n    color: #0b1a33;\n    margin: 0;\n    letter-spacing: -0.3px;\n  }\n  .cat-faq-module .module-header .badge {\n    background: #0b1a33;\n    color: #fff;\n    font-size: 14px;\n    font-weight: 600;\n    padding: 2px 18px;\n    border-radius: 30px;\n    letter-spacing: 0.3px;\n  }\n  .cat-faq-module details {\n    display: block;\n    margin-bottom: 6px;\n    border-bottom: 1px solid #eef2f6;\n    padding: 8px 0;\n    transition: all 0.2s ease;\n  }\n  .cat-faq-module details:last-of-type {\n    border-bottom: none;\n  }\n  .cat-faq-module summary {\n    display: flex;\n    align-items: center;\n    cursor: pointer;\n    font-size: 17px;\n    font-weight: 600;\n    color: #0b1a33;\n    padding: 10px 4px 10px 0;\n    list-style: none;\n    position: relative;\n    user-select: none;\n    gap: 12px;\n  }\n  .cat-faq-module summary::-webkit-details-marker {\n    display: none;\n  }\n  .cat-faq-module summary::before {\n    content: \"▶\";\n    font-size: 14px;\n    color: #1a73e8;\n    transition: transform 0.25s ease;\n    display: inline-block;\n    width: 20px;\n    font-weight: 400;\n  }\n  .cat-faq-module details[open] \u003e summary::before {\n    transform: rotate(90deg);\n  }\n  .cat-faq-module summary .q-mark {\n    background: #eef5ff;\n    color: #1a73e8;\n    font-weight: 700;\n    font-size: 14px;\n    padding: 0 12px;\n    border-radius: 20px;\n    line-height: 26px;\n  }\n  .cat-faq-module .answer-wrap {\n    padding: 8px 20px 16px 36px;\n    color: #2c3e50;\n    font-size: 15.5px;\n    line-height: 1.75;\n  }\n  .cat-faq-module .answer-wrap p {\n    margin: 0 0 12px 0;\n  }\n  .cat-faq-module .answer-wrap p:last-child {\n    margin-bottom: 0;\n  }\n  .cat-faq-module .answer-wrap ul, \n  .cat-faq-module .answer-wrap ol {\n    padding-left: 22px;\n    margin: 6px 0 12px 0;\n  }\n  .cat-faq-module .answer-wrap li {\n    margin-bottom: 4px;\n  }\n  .cat-faq-module .answer-wrap strong {\n    color: #0b1a33;\n  }\n  .cat-faq-module .warning-box {\n    background: #f9fcff;\n    border-left: 5px solid #1a73e8;\n    padding: 14px 22px;\n    border-radius: 12px;\n    margin: 12px 0 4px 0;\n    font-size: 15px;\n  }\n  .cat-faq-module table {\n    width: 100%;\n    border-collapse: collapse;\n    font-size: 14.5px;\n    margin: 12px 0;\n  }\n  .cat-faq-module table th,\n  .cat-faq-module table td {\n    border: 1px solid #dce1e9;\n    padding: 10px 8px;\n    text-align: left;\n  }\n  .cat-faq-module table th {\n    background: #f0f4fa;\n  }\n  .cat-faq-module .contact-item {\n    margin-bottom: 10px;\n    padding-left: 4px;\n  }\n  .cat-faq-module .contact-item strong {\n    display: inline-block;\n    min-width: 60px;\n  }\n  @media (max-width: 640px) {\n    .cat-faq-module { padding: 18px 16px 6px 16px; }\n    .cat-faq-module .module-header h2 { font-size: 22px; }\n    .cat-faq-module summary { font-size: 15px; }\n    .cat-faq-module .answer-wrap { padding: 6px 8px 12px 20px; font-size: 14.5px; }\n    .cat-faq-module table { font-size: 13px; }\n    .cat-faq-module table th, .cat-faq-module table td { padding: 6px 4px; }\n  }\n\u003c\/style\u003e\n\n\u003cdiv class=\"cat-faq-module\"\u003e\n  \u003cdiv class=\"module-header\"\u003e\n    \u003ch2\u003e Product Description \u003c\/h2\u003e\n    \u003cspan class=\"badge\"\u003eClick to expand\u003c\/span\u003e\n  \u003c\/div\u003e\n\n  \u003c!-- Q1 – 金属载体材质说明 --\u003e\n  \u003cdetails\u003e\n    \u003csummary\u003e\u003cspan class=\"q-mark\"\u003eQ1\u003c\/span\u003e Metal substrate material specifications\u003c\/summary\u003e\n    \u003cdiv class=\"answer-wrap\"\u003e\n      \u003cp\u003eMetal honeycomb substrates are manufactured in nearly 10,000 specifications and support full non‑standard customization.\u003c\/p\u003e\n      \u003cul\u003e\n        \u003cli\u003e\n\u003cstrong\u003eHousing materials:\u003c\/strong\u003e 316L, 304, 444, 441 (or customer‑specified).\u003c\/li\u003e\n        \u003cli\u003e\n\u003cstrong\u003eCore material:\u003c\/strong\u003e FeCr21Al6 (ferritic stainless steel).\u003c\/li\u003e\n        \u003cli\u003e\n\u003cstrong\u003eCarrier outer diameter:\u003c\/strong\u003e 12 – 960 mm.\u003c\/li\u003e\n        \u003cli\u003e\n\u003cstrong\u003eHeight:\u003c\/strong\u003e 9 – 150 mm.\u003c\/li\u003e\n        \u003cli\u003e\n\u003cstrong\u003eCell density (CPSI):\u003c\/strong\u003e 5 – 1200 cpsi.\u003c\/li\u003e\n        \u003cli\u003e\n\u003cstrong\u003eShell wall thickness:\u003c\/strong\u003e 0.5 – 3.0 mm (shell‑less option available).\u003c\/li\u003e\n        \u003cli\u003e\n\u003cstrong\u003eCore wall thickness:\u003c\/strong\u003e 0.03 – 0.18 mm.\u003c\/li\u003e\n        \u003cli\u003e\n\u003cstrong\u003eInternal core configuration:\u003c\/strong\u003e single core, S‑core, or three‑core.\u003c\/li\u003e\n        \u003cli\u003e\n\u003cstrong\u003eAvailable shapes:\u003c\/strong\u003e cylindrical, rectangular, square, racetrack (oval), elliptical, trapezoidal, pentagonal, pear‑shaped.\u003c\/li\u003e\n      \u003c\/ul\u003e\n      \u003cp\u003eThese substrates offer extreme design flexibility to match virtually any exhaust system requirement.\u003c\/p\u003e\n    \u003c\/div\u003e\n  \u003c\/details\u003e\n\n  \u003c!-- Q2 – 催化转化器工作原理 --\u003e\n  \u003cdetails\u003e\n    \u003csummary\u003e\u003cspan class=\"q-mark\"\u003eQ2\u003c\/span\u003e Working Principle of Catalytic Converter\u003c\/summary\u003e\n    \u003cdiv class=\"answer-wrap\"\u003e\n      \u003cp\u003eA \u003cstrong\u003ethree-way catalytic converter\u003c\/strong\u003e (TWC) simultaneously converts three primary harmful exhaust pollutants into less harmful substances through oxidation and reduction reactions:\u003c\/p\u003e\n      \u003cul\u003e\n        \u003cli\u003e\n\u003cstrong\u003eCarbon Monoxide (CO)\u003c\/strong\u003e → oxidized into Carbon Dioxide (CO₂)\u003c\/li\u003e\n        \u003cli\u003e\n\u003cstrong\u003eUnburned Hydrocarbons (HC)\u003c\/strong\u003e → oxidized into Carbon Dioxide (CO₂) and Water (H₂O)\u003c\/li\u003e\n        \u003cli\u003e\n\u003cstrong\u003eNitrogen Oxides (NOx)\u003c\/strong\u003e → reduced into Nitrogen (N₂) and Oxygen (O₂)\u003c\/li\u003e\n      \u003c\/ul\u003e\n      \u003cp\u003eThe substrate (ceramic or metal) is coated with a \"washcoat\" containing precious metal catalysts (platinum, palladium, rhodium). As exhaust gases pass through the honeycomb channels at high temperature (around 300°C), these metals catalyze the chemical reactions that convert approximately 98% of harmful emissions into harmless gases. This process is essential for meeting global emissions standards and protecting air quality.\u003c\/p\u003e\n    \u003c\/div\u003e\n  \u003c\/details\u003e\n\n  \u003c!-- Q3 – 排放标准 --\u003e\n  \u003cdetails\u003e\n    \u003csummary\u003e\u003cspan class=\"q-mark\"\u003eQ3\u003c\/span\u003e Does this meet Euro 3-6 emissions standards?\u003c\/summary\u003e\n    \u003cdiv class=\"answer-wrap\"\u003e\n      \u003cp\u003eYes. Our metal and ceramic catalytic converter substrates are designed to comply with \u003cstrong\u003eEuro 3, Euro 4, Euro 5, and Euro 6\u003c\/strong\u003e emissions standards. When properly installed on a vehicle that is otherwise in good mechanical condition, our substrates support the vehicle's ability to meet the emissions limits for which it was originally certified. Euro 3 was introduced in 2000, with each subsequent standard imposing stricter limits — our substrates are engineered to meet the requirements across this range.\u003c\/p\u003e\n      \u003cp\u003e\u003cstrong\u003eNote:\u003c\/strong\u003e Emissions compliance depends on the complete vehicle system, not just the catalytic converter. Proper engine tuning, oxygen sensor function, and overall engine health are also critical factors.\u003c\/p\u003e\n    \u003c\/div\u003e\n  \u003c\/details\u003e\n\n  \u003c!-- Q4 – 质保（已修改为1年） --\u003e\n  \u003cdetails\u003e\n    \u003csummary\u003e\u003cspan class=\"q-mark\"\u003eQ4\u003c\/span\u003e What is your warranty policy?\u003c\/summary\u003e\n    \u003cdiv class=\"answer-wrap\"\u003e\n      \u003cp\u003eOur warranty policy differs by product type:\u003c\/p\u003e\n      \u003cul\u003e\n        \u003cli\u003e\n\u003cstrong\u003eCeramic Muffler Cores\u003c\/strong\u003e — No warranty provided. These are mechanical components subject to wear and external factors.\u003c\/li\u003e\n        \u003cli\u003e\n\u003cstrong\u003eCatalytic Converter Substrates (Ceramic or Metal)\u003c\/strong\u003e — Covered by a \u003cstrong\u003e1‑year warranty\u003c\/strong\u003e against manufacturing defects. This warranty covers the substrate structure and catalytic coating integrity under normal use conditions.\u003c\/li\u003e\n      \u003c\/ul\u003e\n      \u003cp\u003eThe warranty does not cover damage caused by improper installation, engine misfire, use of leaded fuel, physical impact damage, or contamination from oil\/coolant. Please retain your purchase receipt and installation records for warranty claims.\u003c\/p\u003e\n    \u003c\/div\u003e\n  \u003c\/details\u003e\n\n  \u003c!-- Q5 – 摩托车催化剂安装指南 --\u003e\n  \u003cdetails\u003e\n    \u003csummary\u003e\u003cspan class=\"q-mark\"\u003eQ5\u003c\/span\u003e Universal metal catalytic converter installation guide\u003c\/summary\u003e\n    \u003cdiv class=\"answer-wrap\"\u003e\n      \u003cp\u003e\u003cstrong\u003eProduct:\u003c\/strong\u003e \u003ca href=\"https:\/\/www.svipcat.com\/products\/universal-metal-catalytic-converter-400-cpsi-total-length-250mm\" target=\"_blank\"\u003eUniversal Metal Catalytic Converter – 400 CPSI, Total Length 250mm\u003c\/a\u003e\u003c\/p\u003e\n\n      \u003cp\u003e\u003cstrong\u003eThis guide is specifically adapted for motorcycle catalytic converter installation.\u003c\/strong\u003e While the product is universal, the following instructions focus on motorcycle applications. Professional installation by a qualified mechanic is strongly recommended.\u003c\/p\u003e\n\n      \u003cp\u003e\u003cstrong\u003e⚠️ Critical Installation Note – Mounting Position:\u003c\/strong\u003e\u003cbr\u003e\n      \u003cstrong\u003eFor optimal performance, the catalytic converter must be installed as close to the engine exhaust port as possible.\u003c\/strong\u003e Motorcycle exhaust gases cool rapidly over the length of the exhaust system. Placing the converter too far downstream may prevent it from reaching the required light‑off temperature (~300°C), resulting in poor emission conversion and possible check‑engine codes. Ideally, the converter should be positioned within the first 30–50 cm of the exhaust pipe after the cylinder head.\u003c\/p\u003e\n\n      \u003cp\u003e\u003cstrong\u003eBefore You Begin:\u003c\/strong\u003e\u003c\/p\u003e\n      \u003cul\u003e\n        \u003cli\u003eEnsure the motorcycle is on a stable stand and the exhaust system is completely cool.\u003c\/li\u003e\n        \u003cli\u003eDisconnect the battery negative terminal.\u003c\/li\u003e\n        \u003cli\u003eRefer to your motorcycle's service manual for specific torque values and exhaust routing.\u003c\/li\u003e\n        \u003cli\u003eWear appropriate safety gear (gloves, eye protection).\u003c\/li\u003e\n      \u003c\/ul\u003e\n\n      \u003cp\u003e\u003cstrong\u003eStep 1: Remove the Existing Exhaust Components\u003c\/strong\u003e\u003c\/p\u003e\n      \u003col\u003e\n        \u003cli\u003eRemove the muffler and any intermediate pipes to access the section where the converter will be installed.\u003c\/li\u003e\n        \u003cli\u003eIf there is an existing converter, carefully remove it by unbolting flanges or cutting the pipe if welded.\u003c\/li\u003e\n        \u003cli\u003eClean the pipe ends thoroughly.\u003c\/li\u003e\n      \u003c\/ol\u003e\n\n      \u003cp\u003e\u003cstrong\u003eStep 2: Determine the Placement\u003c\/strong\u003e\u003c\/p\u003e\n      \u003col\u003e\n        \u003cli\u003eIdentify the optimal location – as close to the exhaust port as possible, while still allowing clearance for suspension, swingarm, and bodywork.\u003c\/li\u003e\n        \u003cli\u003eMeasure the available straight pipe length. The converter's total length (250mm) must fit without excessive bending.\u003c\/li\u003e\n        \u003cli\u003eMark the cutting points on the pipe to accommodate the converter's dimensions.\u003c\/li\u003e\n      \u003c\/ol\u003e\n\n      \u003cp\u003e\u003cstrong\u003eStep 3: Cut and Prepare the Pipe\u003c\/strong\u003e\u003c\/p\u003e\n      \u003col\u003e\n        \u003cli\u003eCut the exhaust pipe at the marked points using a suitable cutter or hacksaw.\u003c\/li\u003e\n        \u003cli\u003eDeburr the cut ends and clean the surface with a wire brush.\u003c\/li\u003e\n        \u003cli\u003eIf the converter is to be welded, ensure the pipe ends are properly aligned and chamfered for welding.\u003c\/li\u003e\n      \u003c\/ol\u003e\n\n      \u003cp\u003e\u003cstrong\u003eStep 4: Install the Converter\u003c\/strong\u003e\u003c\/p\u003e\n      \u003col\u003e\n        \u003cli\u003eSlide the converter into the gap, ensuring the flow direction arrow points toward the exhaust outlet.\u003c\/li\u003e\n        \u003cli\u003eFor weld‑on installation:\n          \u003cul\u003e\n            \u003cli\u003eTack‑weld the converter in place at several points.\u003c\/li\u003e\n            \u003cli\u003eCheck alignment and weld fully around both joints using stainless steel wire.\u003c\/li\u003e\n            \u003cli\u003eAllow welds to cool gradually.\u003c\/li\u003e\n          \u003c\/ul\u003e\n        \u003c\/li\u003e\n        \u003cli\u003eFor clamped installation:\n          \u003cul\u003e\n            \u003cli\u003eUse high‑quality exhaust clamps (band‑type or U‑bolt).\u003c\/li\u003e\n            \u003cli\u003eTighten clamps evenly to the recommended torque (typically 25–35 Nm).\u003c\/li\u003e\n          \u003c\/ul\u003e\n        \u003c\/li\u003e\n      \u003c\/ol\u003e\n\n      \u003cp\u003e\u003cstrong\u003eStep 5: Reassemble and Test\u003c\/strong\u003e\u003c\/p\u003e\n      \u003col\u003e\n        \u003cli\u003eReinstall the muffler and any other components removed.\u003c\/li\u003e\n        \u003cli\u003eReconnect the battery.\u003c\/li\u003e\n        \u003cli\u003eStart the engine and check for exhaust leaks around the new joints.\u003c\/li\u003e\n        \u003cli\u003eAllow the engine to reach normal operating temperature (idle for several minutes).\u003c\/li\u003e\n        \u003cli\u003eCheck for proper idle and acceleration response. If the check engine light appears, verify O₂ sensor connections and converter efficiency.\u003c\/li\u003e\n        \u003cli\u003eTake a short test ride and re‑check all fasteners after cooling.\u003c\/li\u003e\n      \u003c\/ol\u003e\n\n      \u003cdiv class=\"warning-box\"\u003e\n        ⚠️ \u003cstrong\u003eImportant Motorcycle‑Specific Notes:\u003c\/strong\u003e\u003cbr\u003e\n        • \u003cstrong\u003eHeat shielding:\u003c\/strong\u003e The converter will become extremely hot. Ensure adequate clearance from fuel lines, plastic body panels, and the rider's legs. Install heat shields if necessary.\u003cbr\u003e\n        • \u003cstrong\u003eExhaust backpressure:\u003c\/strong\u003e Modifying the exhaust system may affect engine tuning. Some motorcycles may require a re‑map or fuel controller adjustment after installation.\u003cbr\u003e\n        • \u003cstrong\u003eO₂ sensors:\u003c\/strong\u003e If your motorcycle uses a lambda sensor, it must be installed in the bung provided on the converter or placed in the exhaust stream before and after the converter for proper closed‑loop operation.\u003cbr\u003e\n        • \u003cstrong\u003eLegal compliance:\u003c\/strong\u003e Check local regulations regarding catalytic converter retrofitting on motorcycles.\u003cbr\u003e\n        • \u003cstrong\u003eProfessional assistance:\u003c\/strong\u003e If you are not experienced with exhaust welding or motorcycle exhaust systems, please seek professional installation.\n      \u003c\/div\u003e\n    \u003c\/div\u003e\n  \u003c\/details\u003e\n\n  \u003c!-- Q6 – 外壳陶瓷催化剂安装指南 --\u003e\n  \u003cdetails\u003e\n    \u003csummary\u003e\u003cspan class=\"q-mark\"\u003eQ6\u003c\/span\u003e Installation guide for shell-type ceramic catalytic converter\u003c\/summary\u003e\n    \u003cdiv class=\"answer-wrap\"\u003e\n      \u003cp\u003e\u003cstrong\u003eProduct Reference:\u003c\/strong\u003e \u003ca href=\"https:\/\/www.svipcat.com\/products\/original-catalytic-converter-pt-pd-rh\" target=\"_blank\"\u003eOriginal Catalytic Converter – Pt\/Pd\/Rh Coating\u003c\/a\u003e\u003c\/p\u003e\n\n      \u003cp\u003eThis is a \u003cstrong\u003ecomplete shell-type ceramic catalytic converter\u003c\/strong\u003e (not just an internal substrate core). It comes as a fully assembled unit with the ceramic honeycomb substrate already encapsulated inside a metal shell, ready for direct bolt-on or weld-on installation. Professional installation by a qualified exhaust technician is strongly recommended. Follow these step‑by‑step guidelines:\u003c\/p\u003e\n\n      \u003cp\u003e\u003cstrong\u003e⚠️ Before You Begin:\u003c\/strong\u003e\u003c\/p\u003e\n      \u003cul\u003e\n        \u003cli\u003eEnsure the vehicle is parked on a level surface and securely supported with jack stands.\u003c\/li\u003e\n        \u003cli\u003eAllow the exhaust system to cool completely before starting work — catalytic converters operate at extremely high temperatures.\u003c\/li\u003e\n        \u003cli\u003eDisconnect the negative battery terminal to prevent electrical shorts and reset the ECU after installation.\u003c\/li\u003e\n        \u003cli\u003eSpray all mounting bolts and flange nuts with penetrating oil a few hours ahead to ease removal.\u003c\/li\u003e\n        \u003cli\u003eRefer to your vehicle's official service manual for detailed, model‑specific procedures.\u003c\/li\u003e\n        \u003cli\u003e\n\u003cstrong\u003eVerify compatibility:\u003c\/strong\u003e Confirm that the converter's dimensions (inlet\/outlet diameter, overall length, flange orientation) match your vehicle's exhaust system.\u003c\/li\u003e\n      \u003c\/ul\u003e\n\n      \u003cp\u003e\u003cstrong\u003eStep 1: Locate and Access the Old Converter\u003c\/strong\u003e\u003c\/p\u003e\n      \u003col\u003e\n        \u003cli\u003eRaise the vehicle and secure it on jack stands. Allow sufficient working space under the chassis.\u003c\/li\u003e\n        \u003cli\u003eLocate the existing catalytic converter in the exhaust system — typically between the exhaust manifold and the muffler.\u003c\/li\u003e\n        \u003cli\u003eRemove any heat shields, underbody covers, or brackets that may obstruct access to the converter.\u003c\/li\u003e\n      \u003c\/ol\u003e\n\n      \u003cp\u003e\u003cstrong\u003eStep 2: Remove Oxygen Sensors (O₂ Sensors)\u003c\/strong\u003e\u003c\/p\u003e\n      \u003col\u003e\n        \u003cli\u003eCarefully disconnect the wiring harness connectors from the upstream and downstream oxygen sensors.\u003c\/li\u003e\n        \u003cli\u003eUse an O₂ sensor socket or a 22mm wrench to unscrew the sensors from the old converter.\u003c\/li\u003e\n        \u003cli\u003e\n\u003cstrong\u003eImportant:\u003c\/strong\u003e Handle the sensors with care — do not damage the sensor tips or wiring. If the sensors are seized, apply penetrating oil and allow it to soak.\u003c\/li\u003e\n        \u003cli\u003eInspect the sensors for damage or carbon buildup. Consider replacing them if they show signs of wear.\u003c\/li\u003e\n      \u003c\/ol\u003e\n\n      \u003cp\u003e\u003cstrong\u003eStep 3: Remove the Old Catalytic Converter\u003c\/strong\u003e\u003c\/p\u003e\n      \u003col\u003e\n        \u003cli\u003eUnbolt the flange connections at both the inlet (engine side) and outlet (exhaust side) ends of the converter.\u003c\/li\u003e\n        \u003cli\u003eIf the exhaust system uses a clamped connection, loosen the clamp bolts and separate the pipes.\u003c\/li\u003e\n        \u003cli\u003eFor weld‑on units, carefully cut the pipes at the designated points using a reciprocating saw or exhaust pipe cutter.\u003c\/li\u003e\n        \u003cli\u003eSupport the converter with one hand while removing the last bolts to prevent it from falling.\u003c\/li\u003e\n        \u003cli\u003eCarefully lower and remove the old catalytic converter assembly from the vehicle.\u003c\/li\u003e\n      \u003c\/ol\u003e\n\n      \u003cp\u003e\u003cstrong\u003eStep 4: Prepare the Exhaust Pipes for Installation\u003c\/strong\u003e\u003c\/p\u003e\n      \u003col\u003e\n        \u003cli\u003eUse a wire brush or sandpaper to thoroughly clean any rust, carbon deposits, or old gasket material from the exhaust pipe flanges and mating surfaces.\u003c\/li\u003e\n        \u003cli\u003eIf the pipes were cut, deburr the cut edges to ensure a clean, smooth surface for welding or clamping.\u003c\/li\u003e\n        \u003cli\u003eCheck that the pipe ends are round and free of distortion. Use an exhaust pipe expander if needed to restore proper shape.\u003c\/li\u003e\n        \u003cli\u003eInstall new gaskets on both the inlet and outlet flanges — never reuse old gaskets.\u003c\/li\u003e\n      \u003c\/ol\u003e\n\n      \u003cp\u003e\u003cstrong\u003eStep 5: Position and Install the New Converter\u003c\/strong\u003e\u003c\/p\u003e\n      \u003col\u003e\n        \u003cli\u003ePosition the new shell-type ceramic catalytic converter in place under the vehicle.\u003c\/li\u003e\n        \u003cli\u003e\n\u003cstrong\u003eCheck flow direction:\u003c\/strong\u003e Ensure the converter is oriented correctly — look for the flow direction arrow marked on the shell. The arrow should point toward the rear of the vehicle (exhaust outlet).\u003c\/li\u003e\n        \u003cli\u003eAlign the inlet flange with the exhaust pipe coming from the engine, and the outlet flange with the downstream exhaust pipe.\u003c\/li\u003e\n        \u003cli\u003eConfirm that all hanger brackets and mounting points align with the vehicle's existing exhaust hangers.\u003c\/li\u003e\n        \u003cli\u003eUse a floor jack or transmission jack to support the converter at the correct height during fitting.\u003c\/li\u003e\n      \u003c\/ol\u003e\n\n      \u003cp\u003e\u003cstrong\u003eStep 6: Secure the Connections\u003c\/strong\u003e\u003c\/p\u003e\n      \u003col\u003e\n        \u003cli\u003e\n\u003cstrong\u003eFor bolt‑on\/flanged converters:\u003c\/strong\u003e\n          \u003cul\u003e\n            \u003cli\u003eInsert new bolts and nuts (use high‑temperature anti‑seize compound on the threads).\u003c\/li\u003e\n            \u003cli\u003eTighten the flange bolts evenly in a criss‑cross pattern to the manufacturer's torque specifications.\u003c\/li\u003e\n            \u003cli\u003eDo not overtighten — excessive torque can warp the flanges and cause exhaust leaks.\u003c\/li\u003e\n          \u003c\/ul\u003e\n        \u003c\/li\u003e\n        \u003cli\u003e\n\u003cstrong\u003eFor weld‑on converters:\u003c\/strong\u003e\n          \u003cul\u003e\n            \u003cli\u003eTack weld the converter at multiple points (top, bottom, sides) to secure its position before final welding.\u003c\/li\u003e\n            \u003cli\u003ePerform full welds around the entire circumference of both the inlet and outlet connections.\u003c\/li\u003e\n            \u003cli\u003eUse appropriate welding techniques and filler material (stainless steel wire for stainless exhausts).\u003c\/li\u003e\n            \u003cli\u003eAllow the welds to cool slowly to prevent warping or stress fractures.\u003c\/li\u003e\n          \u003c\/ul\u003e\n        \u003c\/li\u003e\n        \u003cli\u003e\n\u003cstrong\u003eFor clamped connections:\u003c\/strong\u003e\n          \u003cul\u003e\n            \u003cli\u003eSlide the clamp over the joint and position it evenly.\u003c\/li\u003e\n            \u003cli\u003eTighten the clamp bolts to the manufacturer's torque specifications.\u003c\/li\u003e\n          \u003c\/ul\u003e\n        \u003c\/li\u003e\n      \u003c\/ol\u003e\n\n      \u003cp\u003e\u003cstrong\u003eStep 7: Reinstall Oxygen Sensors\u003c\/strong\u003e\u003c\/p\u003e\n      \u003col\u003e\n        \u003cli\u003eApply a small amount of anti‑seize compound to the sensor threads (avoid getting any on the sensor tip).\u003c\/li\u003e\n        \u003cli\u003eScrew the upstream and downstream O₂ sensors into their respective bungs on the new converter.\u003c\/li\u003e\n        \u003cli\u003eTighten to the specified torque (typically 30–45 Nm). Do not overtighten.\u003c\/li\u003e\n        \u003cli\u003eReconnect the sensor wiring harnesses securely.\u003c\/li\u003e\n        \u003cli\u003eRoute the wiring away from hot exhaust components and moving parts.\u003c\/li\u003e\n      \u003c\/ol\u003e\n\n      \u003cp\u003e\u003cstrong\u003eStep 8: Reinstall Heat Shields and Final Checks\u003c\/strong\u003e\u003c\/p\u003e\n      \u003col\u003e\n        \u003cli\u003eReinstall any heat shields, underbody covers, or brackets that were removed.\u003c\/li\u003e\n        \u003cli\u003eCheck that all hanger rods are properly seated in the rubber isolators.\u003c\/li\u003e\n        \u003cli\u003eVerify that there is adequate clearance between the converter and any surrounding components (fuel lines, brake lines, wiring, body panels).\u003c\/li\u003e\n        \u003cli\u003eDouble‑check that all bolts, nuts, and clamps are tightened to specification.\u003c\/li\u003e\n      \u003c\/ol\u003e\n\n      \u003cp\u003e\u003cstrong\u003eStep 9: Reconnect Battery and Test Operation\u003c\/strong\u003e\u003c\/p\u003e\n      \u003col\u003e\n        \u003cli\u003eReconnect the negative battery terminal.\u003c\/li\u003e\n        \u003cli\u003eStart the engine and allow it to idle.\u003c\/li\u003e\n        \u003cli\u003e\n\u003cstrong\u003eCheck for exhaust leaks:\u003c\/strong\u003e Listen for hissing sounds and feel around all connections (flanges, welds, clamps, sensor bungs) for escaping exhaust gases. Use a soapy water spray — bubbles indicate a leak.\u003c\/li\u003e\n        \u003cli\u003eAllow the engine to reach normal operating temperature (the catalytic converter needs to reach light‑off temperature, typically around 300°C, to function properly).\u003c\/li\u003e\n        \u003cli\u003eVerify that the check engine light remains off. If it illuminates, use an OBD‑II scanner to read the diagnostic trouble codes.\u003c\/li\u003e\n        \u003cli\u003eTake a short test drive (10–15 minutes) to confirm proper function. Listen for any unusual noises or vibrations.\u003c\/li\u003e\n        \u003cli\u003eAfter the test drive, re‑check all connections for leaks while the system is hot.\u003c\/li\u003e\n      \u003c\/ol\u003e\n\n      \u003cdiv class=\"warning-box\"\u003e\n        ⚠️ \u003cstrong\u003eImportant Safety \u0026amp; Compliance Notes:\u003c\/strong\u003e\u003cbr\u003e\n        • This converter contains a ceramic substrate — handle with care. Dropping or impacting the unit can crack the ceramic core, rendering it useless.\u003cbr\u003e\n        • All welding must be performed by a qualified technician to maintain the structural integrity of the exhaust system.\u003cbr\u003e\n        • Improper installation may damage the substrate, reduce performance, void the warranty, and create safety hazards (exhaust leaks can allow carbon monoxide to enter the cabin).\u003cbr\u003e\n        • Ensure the replacement converter is the correct type for your vehicle's engine and emissions system. Using an incorrect converter can trigger check engine lights and cause failed emissions tests.\u003cbr\u003e\n        • For vehicles registered in California or other CARB‑restricted states, verify that the converter meets applicable CARB compliance requirements.\u003cbr\u003e\n        • Always follow your vehicle manufacturer's service procedures. This guide provides general instructions only — refer to your vehicle's service manual for torque specifications and model‑specific details.\n      \u003c\/div\u003e\n    \u003c\/div\u003e\n  \u003c\/details\u003e\n\n  \u003c!-- Q7 – 发货\/运输时间 --\u003e\n  \u003cdetails\u003e\n    \u003csummary\u003e\u003cspan class=\"q-mark\"\u003eQ7\u003c\/span\u003e What are your shipping \u0026amp; delivery times?\u003c\/summary\u003e\n    \u003cdiv class=\"answer-wrap\"\u003e\n      \u003cp\u003eOur shipping and delivery times depend on stock availability:\u003c\/p\u003e\n      \u003cul\u003e\n        \u003cli\u003e\n\u003cstrong\u003eIf we have stock:\u003c\/strong\u003e We ship within 1–3 business days. Delivery typically takes \u003cstrong\u003e12–15 days\u003c\/strong\u003e (including customs clearance and duties).\u003c\/li\u003e\n        \u003cli\u003e\n\u003cstrong\u003eIf we are out of stock:\u003c\/strong\u003e Production and handling take 15–20 business days, then delivery takes approximately \u003cstrong\u003e12–15 days\u003c\/strong\u003e (including customs clearance and duties).\u003c\/li\u003e\n      \u003c\/ul\u003e\n      \u003cp\u003e\u003cstrong\u003eAll shipments are sent DDP (Delivered Duty Paid)\u003c\/strong\u003e – this means that all customs clearance fees, import duties, and taxes are already included in the total price you pay. You will not be charged any extra fees upon delivery.\u003c\/p\u003e\n      \u003cp\u003eIf you need faster delivery, please contact us to arrange expedited shipping via \u003cstrong\u003eDHL, UPS, or FEDEX\u003c\/strong\u003e (additional charges apply).\u003c\/p\u003e\n      \u003cp\u003eWe will provide you with a tracking number as soon as your order is dispatched.\u003c\/p\u003e\n    \u003c\/div\u003e\n  \u003c\/details\u003e\n\n  \u003c!-- Q8 – 联系我们 --\u003e\n  \u003cdetails\u003e\n    \u003csummary\u003e\u003cspan class=\"q-mark\"\u003eQ8\u003c\/span\u003e How can I contact you?\u003c\/summary\u003e\n    \u003cdiv class=\"answer-wrap\"\u003e\n      \u003cp\u003eYou can reach our team directly via WhatsApp or email. We are happy to assist with any questions about products, sizing, orders, or technical support.\u003c\/p\u003e\n\n      \u003cdiv class=\"contact-item\"\u003e\n        \u003cstrong\u003eDavin\u003c\/strong\u003e\u003cbr\u003e\n        WhatsApp: \u003ca href=\"https:\/\/wa.me\/8613335696939\" target=\"_blank\"\u003e+86 133 3569 6939\u003c\/a\u003e\u003cbr\u003e\n        E-mail: \u003ca href=\"mailto:KSRCAT@proton.me\"\u003eKSRCAT@proton.me\u003c\/a\u003e\n      \u003c\/div\u003e\n\n      \u003cdiv class=\"contact-item\"\u003e\n        \u003cstrong\u003eAlison\u003c\/strong\u003e\u003cbr\u003e\n        WhatsApp: \u003ca href=\"https:\/\/wa.me\/8615082475717\" target=\"_blank\"\u003e+86 150 8247 5717\u003c\/a\u003e\u003cbr\u003e\n        E-mail: \u003ca href=\"mailto:Ksrcatalytic@gmail.com\"\u003eKsrcatalytic@gmail.com\u003c\/a\u003e\n      \u003c\/div\u003e\n\n      \u003cdiv class=\"contact-item\"\u003e\n        \u003cstrong\u003eMia\u003c\/strong\u003e\u003cbr\u003e\n        WhatsApp: \u003ca href=\"https:\/\/wa.me\/8613681711685\" target=\"_blank\"\u003e+86 136 8171 1685\u003c\/a\u003e\u003cbr\u003e\n        E-mail: \u003ca href=\"mailto:Kesairay@proton.me\"\u003eKesairay@proton.me\u003c\/a\u003e\n      \u003c\/div\u003e\n\n      \u003cp\u003eWe typically respond within 24 hours (Monday–Saturday). Please include your order number or vehicle details for faster assistance.\u003c\/p\u003e\n    \u003c\/div\u003e\n  \u003c\/details\u003e\n\n  \u003c!-- Q9 – 公司总部地址 --\u003e\n  \u003cdetails\u003e\n    \u003csummary\u003e\u003cspan class=\"q-mark\"\u003eQ9\u003c\/span\u003e Where is your headquarters located?\u003c\/summary\u003e\n    \u003cdiv class=\"answer-wrap\"\u003e\n      \u003cp\u003eOur company headquarters is located at:\u003c\/p\u003e\n      \u003cp\u003e\u003cstrong\u003eBuilding C, Zhongguan Innovation Center, Dongcheng 2nd Road, Pujiang Town, Minhang District, Shanghai, China\u003c\/strong\u003e\u003c\/p\u003e\n      \u003cp\u003eWe welcome business visits by appointment. Please contact us in advance to arrange a suitable time.\u003c\/p\u003e\n    \u003c\/div\u003e\n  \u003c\/details\u003e\n\u003c\/div\u003e","brand":"SVIPCAT Store","offers":[{"title":"53 x 60mm","offer_id":54402924773722,"sku":null,"price":8.88,"currency_code":"GBP","in_stock":true},{"title":"53 x 80mm","offer_id":54402924806490,"sku":null,"price":13.33,"currency_code":"GBP","in_stock":true},{"title":"53 x 100mm","offer_id":54402924839258,"sku":null,"price":16.66,"currency_code":"GBP","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0958\/5164\/3226\/files\/1_2e919408-332f-4ce7-a28a-c32ccb415fd0.jpg?v=1783591666","url":"https:\/\/www.svipcat.com\/products\/53mm-diameter-motorcycle-catalyst","provider":"SVIPCAT Store","version":"1.0","type":"link"}