{"product_id":"royal-enfield-kab00039-a-master-cylinder-major-kit-etl-for-bullet-350-es-disc-bs4-genuine-oem","title":"Royal Enfield KAB00039\/A – Master Cylinder Major Kit (ETL) for Bullet 350 ES Disc BS4 – Genuine OEM","description":"\u003cp data-start=\"391\" data-end=\"942\"\u003eRestore crisp, consistent braking with the \u003cstrong data-start=\"434\" data-end=\"494\"\u003eRoyal Enfield KAB00039\/A Master Cylinder Major Kit (ETL)\u003c\/strong\u003e. This \u003cstrong data-start=\"501\" data-end=\"529\"\u003egenuine OEM overhaul kit\u003c\/strong\u003e services the disc-brake master cylinder used on the \u003cstrong data-start=\"582\" data-end=\"610\"\u003eBullet 350 ES Disc (BS4)\u003c\/strong\u003e, replacing the high-wear internal parts to bring back proper hydraulic pressure and lever feel. The kit (ETL = \u003cstrong data-start=\"722\" data-end=\"748\"\u003eEndurance Technologies\u003c\/strong\u003e, the OE brake supplier to RE) is engineered to factory tolerances for a direct, reliable rebuild—ideal when your lever feels spongy, you notice fluid bypass\/leaks, or the piston\/seals are worn.\u003c\/p\u003e\n\u003cp data-start=\"944\" data-end=\"1295\"\u003eBecause it’s OEM, components match the original bore and materials for long service in Indian riding conditions. Installation is straightforward for an experienced technician: disassemble the master cylinder, clean the body, install the new piston\/springs\/seals (as supplied in the OEM pack), reassemble, and \u003cstrong data-start=\"1253\" data-end=\"1273\"\u003ebleed the system\u003c\/strong\u003e with fresh DOT fluid.\u003c\/p\u003e\n\u003cblockquote data-start=\"1297\" data-end=\"1526\"\u003e\n\u003cp data-start=\"1299\" data-end=\"1526\"\u003e\u003cstrong data-start=\"1299\" data-end=\"1320\"\u003eVerified fitment:\u003c\/strong\u003e Bullet 350 \u003cstrong data-start=\"1332\" data-end=\"1349\"\u003eES Disc (BS4)\u003c\/strong\u003e master cylinder using the ETL unit. For other models, confirm your existing master cylinder \u003cstrong data-start=\"1442\" data-end=\"1471\"\u003epart code and ETL marking\u003c\/strong\u003e before purchase. \u003cspan class=\"\" data-state=\"closed\"\u003e\u003cspan class=\"ms-1 inline-flex max-w-full items-center relative top-[-0.094rem] animate-[show_150ms_ease-in]\"\u003e\u003ca href=\"https:\/\/thesparescompany.com\/products\/master-cylinder-major-kit_etl-reparts-2?srsltid=AfmBOopRqUlIdY5XjsuFxo2oNQFwmqw95CJ0fvAcQVEWqBUEGHOrXngJ\u0026amp;utm_source=chatgpt.com\" rel=\"noopener\" alt=\"https:\/\/thesparescompany.com\/products\/master-cylinder-major-kit_etl-reparts-2?srsltid=AfmBOopRqUlIdY5XjsuFxo2oNQFwmqw95CJ0fvAcQVEWqBUEGHOrXngJ\u0026amp;utm_source=chatgpt.com\" class=\"flex h-4.5 overflow-hidden rounded-xl px-2 text-[9px] font-medium text-token-text-secondary! bg-[#F4F4F4]! dark:bg-[#303030]! transition-colors duration-150 ease-in-out\" target=\"_blank\"\u003e\u003cspan class=\"relative start-0 bottom-0 flex h-full w-full items-center\"\u003e\u003cspan class=\"flex h-4 w-full items-center justify-between overflow-hidden\"\u003e\u003cspan class=\"max-w-full grow truncate overflow-hidden text-center\"\u003eThe Spares Company\u003c\/span\u003e\u003c\/span\u003e\u003c\/span\u003e\u003c\/a\u003e\u003c\/span\u003e\u003c\/span\u003e\u003cspan class=\"\" data-state=\"closed\"\u003e\u003cspan class=\"ms-1 inline-flex max-w-full items-center relative top-[-0.094rem] animate-[show_150ms_ease-in]\"\u003e\u003ca href=\"https:\/\/www.bike-parts-royalenfield.com\/royalenfield-motorcycle\/assignment_spare_parts\/KAB00039_A?utm_source=chatgpt.com\" rel=\"noopener\" alt=\"https:\/\/www.bike-parts-royalenfield.com\/royalenfield-motorcycle\/assignment_spare_parts\/KAB00039_A?utm_source=chatgpt.com\" class=\"flex h-4.5 overflow-hidden rounded-xl px-2 text-[9px] font-medium text-token-text-secondary! bg-[#F4F4F4]! dark:bg-[#303030]! transition-colors duration-150 ease-in-out\" target=\"_blank\"\u003e\u003cspan class=\"relative start-0 bottom-0 flex h-full w-full items-center\"\u003e\u003cspan class=\"flex h-4 w-full items-center justify-between overflow-hidden\"\u003e\u003cspan class=\"max-w-full grow truncate overflow-hidden text-center\"\u003eRoyal Enfield Parts\u003c\/span\u003e\u003c\/span\u003e\u003c\/span\u003e\u003c\/a\u003e\u003c\/span\u003e\u003c\/span\u003e\u003c\/p\u003e\n\u003c\/blockquote\u003e\n\u003ch1 data-start=\"1528\" data-end=\"1542\"\u003eKey Features\u003c\/h1\u003e\n\u003cul data-start=\"1543\" data-end=\"2189\"\u003e\n\u003cli data-start=\"1543\" data-end=\"1669\"\u003e\n\u003cp data-start=\"1545\" data-end=\"1669\"\u003e\u003cstrong data-start=\"1545\" data-end=\"1570\"\u003eOEM Royal Enfield kit\u003c\/strong\u003e — Part No. \u003cstrong data-start=\"1582\" data-end=\"1596\"\u003eKAB00039\/A\u003c\/strong\u003e (Master Cylinder Major Kit_ETL). \u003cspan class=\"\" data-state=\"closed\"\u003e\u003cspan class=\"ms-1 inline-flex max-w-full items-center relative top-[-0.094rem] animate-[show_150ms_ease-in]\"\u003e\u003ca href=\"https:\/\/www.bike-parts-royalenfield.com\/royalenfield-motorcycle\/assignment_spare_parts\/KAB00039_A?utm_source=chatgpt.com\" rel=\"noopener\" alt=\"https:\/\/www.bike-parts-royalenfield.com\/royalenfield-motorcycle\/assignment_spare_parts\/KAB00039_A?utm_source=chatgpt.com\" class=\"flex h-4.5 overflow-hidden rounded-xl px-2 text-[9px] font-medium text-token-text-secondary! bg-[#F4F4F4]! dark:bg-[#303030]! transition-colors duration-150 ease-in-out\" target=\"_blank\"\u003e\u003cspan class=\"relative start-0 bottom-0 flex h-full w-full items-center\"\u003e\u003cspan class=\"flex h-4 w-full items-center justify-between\"\u003e\u003cspan class=\"max-w-full grow truncate overflow-hidden text-center\"\u003eRoyal Enfield Parts\u003c\/span\u003e\u003cspan class=\"-me-1 flex h-full items-center rounded-full px-1 text-[#8F8F8F]\"\u003e+1\u003c\/span\u003e\u003c\/span\u003e\u003c\/span\u003e\u003c\/a\u003e\u003c\/span\u003e\u003c\/span\u003e\u003c\/p\u003e\n\u003c\/li\u003e\n\u003cli data-start=\"1670\" data-end=\"1819\"\u003e\n\u003cp data-start=\"1672\" data-end=\"1819\"\u003eDesigned to \u003cstrong data-start=\"1684\" data-end=\"1702\"\u003efully overhaul\u003c\/strong\u003e the ETL master cylinder (piston, seals, springs \u0026amp; hardware as per OEM pack). \u003cspan class=\"\" data-state=\"closed\"\u003e\u003cspan class=\"ms-1 inline-flex max-w-full items-center relative top-[-0.094rem] animate-[show_150ms_ease-in]\"\u003e\u003ca href=\"https:\/\/www.bike-parts-royalenfield.com\/royalenfield-motorcycle\/assignment_spare_parts\/KAB00039_A?utm_source=chatgpt.com\" rel=\"noopener\" alt=\"https:\/\/www.bike-parts-royalenfield.com\/royalenfield-motorcycle\/assignment_spare_parts\/KAB00039_A?utm_source=chatgpt.com\" class=\"flex h-4.5 overflow-hidden rounded-xl px-2 text-[9px] font-medium text-token-text-secondary! bg-[#F4F4F4]! dark:bg-[#303030]! transition-colors duration-150 ease-in-out\" target=\"_blank\"\u003e\u003cspan class=\"relative start-0 bottom-0 flex h-full w-full items-center\"\u003e\u003cspan class=\"flex h-4 w-full items-center justify-between overflow-hidden\"\u003e\u003cspan class=\"max-w-full grow truncate overflow-hidden text-center\"\u003eRoyal Enfield Parts\u003c\/span\u003e\u003c\/span\u003e\u003c\/span\u003e\u003c\/a\u003e\u003c\/span\u003e\u003c\/span\u003e\u003c\/p\u003e\n\u003c\/li\u003e\n\u003cli data-start=\"1820\" data-end=\"1947\"\u003e\n\u003cp data-start=\"1822\" data-end=\"1947\"\u003e\u003cstrong data-start=\"1822\" data-end=\"1849\"\u003eVerified compatibility:\u003c\/strong\u003e Bullet 350 \u003cstrong data-start=\"1861\" data-end=\"1878\"\u003eES Disc (BS4)\u003c\/strong\u003e front brake master cylinder. \u003cspan class=\"\" data-state=\"closed\"\u003e\u003cspan class=\"ms-1 inline-flex max-w-full items-center relative top-[-0.094rem] animate-[show_150ms_ease-in]\"\u003e\u003ca href=\"https:\/\/thesparescompany.com\/products\/master-cylinder-major-kit_etl-reparts-2?srsltid=AfmBOopRqUlIdY5XjsuFxo2oNQFwmqw95CJ0fvAcQVEWqBUEGHOrXngJ\u0026amp;utm_source=chatgpt.com\" rel=\"noopener\" alt=\"https:\/\/thesparescompany.com\/products\/master-cylinder-major-kit_etl-reparts-2?srsltid=AfmBOopRqUlIdY5XjsuFxo2oNQFwmqw95CJ0fvAcQVEWqBUEGHOrXngJ\u0026amp;utm_source=chatgpt.com\" class=\"flex h-4.5 overflow-hidden rounded-xl px-2 text-[9px] font-medium text-token-text-secondary! bg-[#F4F4F4]! dark:bg-[#303030]! transition-colors duration-150 ease-in-out\" target=\"_blank\"\u003e\u003cspan class=\"relative start-0 bottom-0 flex h-full w-full items-center\"\u003e\u003cspan class=\"flex h-4 w-full items-center justify-between overflow-hidden\"\u003e\u003cspan class=\"max-w-full grow truncate overflow-hidden text-center\"\u003eThe Spares Company\u003c\/span\u003e\u003c\/span\u003e\u003c\/span\u003e\u003c\/a\u003e\u003c\/span\u003e\u003c\/span\u003e\u003c\/p\u003e\n\u003c\/li\u003e\n\u003cli data-start=\"1948\" data-end=\"2024\"\u003e\n\u003cp data-start=\"1950\" data-end=\"2024\"\u003eRestores \u003cstrong data-start=\"1959\" data-end=\"1995\"\u003ehydraulic integrity \u0026amp; lever feel\u003c\/strong\u003e; reduces internal leakage.\u003c\/p\u003e\n\u003c\/li\u003e\n\u003cli data-start=\"2025\" data-end=\"2091\"\u003e\n\u003cp data-start=\"2027\" data-end=\"2091\"\u003e\u003cstrong data-start=\"2027\" data-end=\"2041\"\u003eDirect fit\u003c\/strong\u003e with factory dimensions; no machining required.\u003c\/p\u003e\n\u003c\/li\u003e\n\u003cli data-start=\"2092\" data-end=\"2189\"\u003e\n\u003cp data-start=\"2094\" data-end=\"2189\"\u003eBuilt to \u003cstrong data-start=\"2103\" data-end=\"2122\"\u003eEndurance (ETL)\u003c\/strong\u003e OE standards for durability. \u003cspan class=\"\" data-state=\"closed\"\u003e\u003cspan class=\"ms-1 inline-flex max-w-full items-center relative top-[-0.094rem] animate-[show_150ms_ease-in]\"\u003e\u003ca href=\"https:\/\/www.endurancegroup.com\/braking-systems\/?utm_source=chatgpt.com\" rel=\"noopener\" alt=\"https:\/\/www.endurancegroup.com\/braking-systems\/?utm_source=chatgpt.com\" class=\"flex h-4.5 overflow-hidden rounded-xl px-2 text-[9px] font-medium text-token-text-secondary! bg-[#F4F4F4]! dark:bg-[#303030]! transition-colors duration-150 ease-in-out\" target=\"_blank\"\u003e\u003cspan class=\"relative start-0 bottom-0 flex h-full w-full items-center\"\u003e\u003cspan class=\"flex h-4 w-full items-center justify-between overflow-hidden\"\u003e\u003cspan class=\"max-w-full grow truncate overflow-hidden text-center\"\u003eEndurance\u003c\/span\u003e\u003c\/span\u003e\u003c\/span\u003e\u003c\/a\u003e\u003c\/span\u003e\u003c\/span\u003e\u003c\/p\u003e\n\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003ch1 data-start=\"2191\" data-end=\"2226\"\u003eCompatibility (strictly verified)\u003c\/h1\u003e\n\u003cul data-start=\"2227\" data-end=\"2593\"\u003e\n\u003cli data-start=\"2227\" data-end=\"2344\"\u003e\n\u003cp data-start=\"2229\" data-end=\"2344\"\u003e\u003cstrong data-start=\"2229\" data-end=\"2238\"\u003eFits:\u003c\/strong\u003e Royal Enfield \u003cstrong data-start=\"2253\" data-end=\"2281\"\u003eBullet 350 ES Disc – BS4\u003c\/strong\u003e (ETL master cylinder). \u003cspan class=\"\" data-state=\"closed\"\u003e\u003cspan class=\"ms-1 inline-flex max-w-full items-center relative top-[-0.094rem] animate-[show_150ms_ease-in]\"\u003e\u003ca href=\"https:\/\/thesparescompany.com\/products\/master-cylinder-major-kit_etl-reparts-2?srsltid=AfmBOopRqUlIdY5XjsuFxo2oNQFwmqw95CJ0fvAcQVEWqBUEGHOrXngJ\u0026amp;utm_source=chatgpt.com\" rel=\"noopener\" alt=\"https:\/\/thesparescompany.com\/products\/master-cylinder-major-kit_etl-reparts-2?srsltid=AfmBOopRqUlIdY5XjsuFxo2oNQFwmqw95CJ0fvAcQVEWqBUEGHOrXngJ\u0026amp;utm_source=chatgpt.com\" class=\"flex h-4.5 overflow-hidden rounded-xl px-2 text-[9px] font-medium text-token-text-secondary! bg-[#F4F4F4]! dark:bg-[#303030]! transition-colors duration-150 ease-in-out\" target=\"_blank\"\u003e\u003cspan class=\"relative start-0 bottom-0 flex h-full w-full items-center\"\u003e\u003cspan class=\"flex h-4 w-full items-center justify-between overflow-hidden\"\u003e\u003cspan class=\"max-w-full grow truncate overflow-hidden text-center\"\u003eThe Spares Company\u003c\/span\u003e\u003c\/span\u003e\u003c\/span\u003e\u003c\/a\u003e\u003c\/span\u003e\u003c\/span\u003e\u003c\/p\u003e\n\u003c\/li\u003e\n\u003cli data-start=\"2345\" data-end=\"2593\"\u003e\n\u003cp data-start=\"2347\" data-end=\"2593\"\u003e\u003cstrong data-start=\"2347\" data-end=\"2368\"\u003eNot confirmed for\u003c\/strong\u003e Classic 350\/500 UCE, Electra, Thunderbird, J-Series (Reborn\/Meteor\/Hunter) or 650\/411 platforms. Please match your master cylinder’s \u003cstrong data-start=\"2502\" data-end=\"2520\"\u003esupplier (ETL)\u003c\/strong\u003e and \u003cstrong data-start=\"2525\" data-end=\"2538\"\u003epart code\u003c\/strong\u003e before ordering. \u003cspan class=\"\" data-state=\"closed\"\u003e\u003cspan class=\"ms-1 inline-flex max-w-full items-center relative top-[-0.094rem] animate-[show_150ms_ease-in]\"\u003e\u003ca href=\"https:\/\/www.bike-parts-royalenfield.com\/royalenfield-motorcycle\/assignment_spare_parts\/KAB00039_A?utm_source=chatgpt.com\" rel=\"noopener\" alt=\"https:\/\/www.bike-parts-royalenfield.com\/royalenfield-motorcycle\/assignment_spare_parts\/KAB00039_A?utm_source=chatgpt.com\" class=\"flex h-4.5 overflow-hidden rounded-xl px-2 text-[9px] font-medium text-token-text-secondary! bg-[#F4F4F4]! dark:bg-[#303030]! transition-colors duration-150 ease-in-out\" target=\"_blank\"\u003e\u003cspan class=\"relative start-0 bottom-0 flex h-full w-full items-center\"\u003e\u003cspan class=\"flex h-4 w-full items-center justify-between overflow-hidden\"\u003e\u003cspan class=\"max-w-full grow truncate overflow-hidden text-center\"\u003eRoyal Enfield Parts\u003c\/span\u003e\u003c\/span\u003e\u003c\/span\u003e\u003c\/a\u003e\u003c\/span\u003e\u003c\/span\u003e\u003c\/p\u003e\n\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003ch1 data-start=\"2595\" data-end=\"2638\"\u003eVariants \/ Related OEM Kits (for clarity)\u003c\/h1\u003e\n\u003cp data-start=\"2639\" data-end=\"2690\"\u003eIf your service need is different, RE also lists:\u003c\/p\u003e\n\u003cul data-start=\"2691\" data-end=\"2960\"\u003e\n\u003cli data-start=\"2691\" data-end=\"2743\"\u003e\n\u003cp data-start=\"2693\" data-end=\"2743\"\u003e\u003cstrong data-start=\"2693\" data-end=\"2741\"\u003eKAB00040\/A – Master Cylinder Minor Kit (ETL)\u003c\/strong\u003e\u003c\/p\u003e\n\u003c\/li\u003e\n\u003cli data-start=\"2744\" data-end=\"2795\"\u003e\n\u003cp data-start=\"2746\" data-end=\"2795\"\u003e\u003cstrong data-start=\"2746\" data-end=\"2793\"\u003eKAB00041\/A – Master Cylinder Seal Kit (ETL)\u003c\/strong\u003e\u003c\/p\u003e\n\u003c\/li\u003e\n\u003cli data-start=\"2796\" data-end=\"2960\"\u003e\n\u003cp data-start=\"2798\" data-end=\"2960\"\u003e\u003cstrong data-start=\"2798\" data-end=\"2854\"\u003eKAB00042\/A – Master Cylinder Push Rod–Fork Kit (ETL)\u003c\/strong\u003e\u003cbr data-start=\"2854\" data-end=\"2857\"\u003e(these part names\/codes are per RE’s official price\/parts inde\u003c\/p\u003e\n\u003c\/li\u003e\n\u003c\/ul\u003e","brand":"UNDER THE HOOD","offers":[{"title":"Default Title","offer_id":50294096527655,"sku":null,"price":0.0,"currency_code":"INR","in_stock":false}],"url":"https:\/\/underthehood.co.in\/products\/royal-enfield-kab00039-a-master-cylinder-major-kit-etl-for-bullet-350-es-disc-bs4-genuine-oem","provider":"UNDER THE HOOD","version":"1.0","type":"link"}