{"product_id":"royal-enfield-1100684b-front-master-cylinder-black","title":"Royal Enfield 1100684\/B – Front Brake Master Cylinder Assembly (Black) for Classic 350, Hunter 350 \u0026 Meteor 350","description":"\u003cp data-end=\"900\" data-start=\"459\"\u003eReplace worn or leaking parts with the genuine Royal Enfield \u003cstrong data-end=\"615\" data-start=\"563\"\u003e1100684\/B Front Master Cylinder Assembly (Black)\u003c\/strong\u003e. This OE unit ensures firm lever feel and precise front-brake control, matching factory specification for bore size, internal seals, mounting, and reservoir interface. Designed in black finish, it blends seamlessly with current styling trends and maintains the OEM build aesthetics.\u003c\/p\u003e\n\u003cp data-end=\"1592\" data-start=\"902\"\u003eFitment is confirmed with multiple UK\/Euro V model trims of \u003cstrong data-end=\"977\" data-start=\"962\"\u003eClassic 350\u003c\/strong\u003e, \u003cstrong data-end=\"1000\" data-start=\"979\"\u003eHunter 350 Dapper\u003c\/strong\u003e, \u003cstrong data-end=\"1016\" data-start=\"1002\"\u003eMeteor 350\u003c\/strong\u003e, and others listed by Iron City Motorcycles and other dealers. If your front brake lever feels spongy, leaks around the master cylinder, deteriorates under heavy use, or shows internal pitting, this assembly restores safety, control, and braking confidence. Installation involves bleeding the brake lines after replacement, using correct DOT brake fluid, and torquing per the service manual. Being a complete OE part, it reduces risk of poor fit, mismatched lever pull, or premature seal failure found in generic replacements. Order it as a single unit—front assembly only.\u003c\/p\u003e\n\u003chr data-end=\"1597\" data-start=\"1594\"\u003e\n\u003cp data-end=\"1618\" data-start=\"1599\"\u003e\u003cstrong data-end=\"1616\" data-start=\"1599\"\u003eKey Features:\u003c\/strong\u003e\u003c\/p\u003e\n\u003cul data-end=\"2279\" data-start=\"1619\"\u003e\n\u003cli data-end=\"1752\" data-start=\"1619\"\u003e\n\u003cp data-end=\"1752\" data-start=\"1621\"\u003eGenuine Royal Enfield OEM part \u003cstrong data-end=\"1665\" data-start=\"1652\"\u003e1100684\/B\u003c\/strong\u003e – Front Brake Master Cylinder Assembly, Black. \u003cspan data-state=\"closed\" class=\"\"\u003e\u003cspan data-testid=\"webpage-citation-pill\" class=\"ms-1 inline-flex max-w-full items-center relative top-[-0.094rem] animate-[show_150ms_ease-in]\"\u003e\u003ca 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\" alt=\"https:\/\/www.bike-parts-royalenfield.com\/royalenfield-motorcycle\/assignment_spare_parts\/1100684_B?utm_source=chatgpt.com\" rel=\"noopener\" href=\"https:\/\/www.bike-parts-royalenfield.com\/royalenfield-motorcycle\/assignment_spare_parts\/1100684_B?utm_source=chatgpt.com\" 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-[15ch] grow truncate overflow-hidden text-center\"\u003e\u003c\/span\u003e\u003c\/span\u003e\u003c\/span\u003e\u003c\/a\u003e\u003c\/span\u003e\u003c\/span\u003eBlack finish styling matched to UK\/Euro V trims (Classic 350, Hunter 350 Dapper, Meteor 350, etc.). \u003cspan data-state=\"closed\" class=\"\"\u003e\u003cspan data-testid=\"webpage-citation-pill\" class=\"ms-1 inline-flex max-w-full items-center relative top-[-0.094rem] animate-[show_150ms_ease-in]\"\u003e\u003c\/span\u003e\u003c\/span\u003e\u003c\/p\u003e\n\u003c\/li\u003e\n\u003cli data-end=\"2054\" data-start=\"1895\"\u003e\n\u003cp data-end=\"2054\" data-start=\"1897\"\u003eExact factory dimensions \u0026amp; internal components (seal, bore, mounting holes) for reliable lever feel and safe braking. \u003cspan data-state=\"closed\" class=\"\"\u003e\u003c\/span\u003e\u003c\/p\u003e\n\u003c\/li\u003e\n\u003cli data-end=\"2141\" data-start=\"2055\"\u003e\n\u003cp data-end=\"2141\" data-start=\"2057\"\u003eIncludes reservoir interface compatible with OE hoses; plug-and-play installation.\u003c\/p\u003e\n\u003c\/li\u003e\n\u003cli data-end=\"2211\" data-start=\"2142\"\u003e\n\u003cp data-end=\"2211\" data-start=\"2144\"\u003eDurable build quality and resistance to weather, heat, vibration.\u003c\/p\u003e\n\u003c\/li\u003e\n\u003cli data-end=\"2279\" data-start=\"2212\"\u003e\n\u003cp data-end=\"2279\" data-start=\"2214\"\u003eReduces brake fade or softness caused by worn master cylinders.\u003c\/p\u003e\n\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003chr data-end=\"2284\" data-start=\"2281\"\u003e\n\u003cp data-end=\"2334\" data-start=\"2286\"\u003e\u003cstrong data-end=\"2334\" data-start=\"2286\"\u003eCompatibility Table (Confirmed Models Only): ALL INDIAN \u003cspan style=\"color: rgb(19, 19, 236);\"\u003e+\u003c\/span\u003e\u003c\/strong\u003e\u003c\/p\u003e\n\u003cdiv class=\"_tableContainer_1rjym_1\"\u003e\n\u003cdiv class=\"group _tableWrapper_1rjym_13 flex w-fit flex-col-reverse\" tabindex=\"-1\"\u003e\n\u003ctable class=\"w-fit min-w-(--thread-content-width)\" data-end=\"3042\" data-start=\"2336\"\u003e\n\u003cthead data-end=\"2409\" data-start=\"2336\"\u003e\n\u003ctr data-end=\"2409\" data-start=\"2336\"\u003e\n\u003cth data-col-size=\"sm\" data-end=\"2344\" data-start=\"2336\"\u003eModel\u003c\/th\u003e\n\u003cth data-col-size=\"sm\" data-end=\"2364\" data-start=\"2344\"\u003eEngine \/ Platform\u003c\/th\u003e\n\u003cth data-col-size=\"sm\" data-end=\"2385\" data-start=\"2364\"\u003eEmissions \/ Region\u003c\/th\u003e\n\u003cth data-col-size=\"md\" data-end=\"2400\" data-start=\"2385\"\u003eYears \/ Trim\u003c\/th\u003e\n\u003cth data-col-size=\"md\" data-end=\"2409\" data-start=\"2400\"\u003eNotes\u003c\/th\u003e\n\u003c\/tr\u003e\n\u003c\/thead\u003e\n\u003ctbody data-end=\"3042\" data-start=\"2432\"\u003e\n\u003ctr data-end=\"2638\" data-start=\"2432\"\u003e\n\u003ctd data-col-size=\"sm\" data-end=\"2457\" data-start=\"2432\"\u003eMeteor 350 UK \/ Euro V\u003c\/td\u003e\n\u003ctd data-col-size=\"sm\" data-end=\"2491\" data-start=\"2457\"\u003e349 cc single cylinder J-Series\u003c\/td\u003e\n\u003ctd data-col-size=\"sm\" data-end=\"2505\" data-start=\"2491\"\u003eUK \/ Euro V\u003c\/td\u003e\n\u003ctd data-col-size=\"md\" data-end=\"2547\" data-start=\"2505\"\u003eFireball, Stellar, Supernova trims etc.\u003c\/td\u003e\n\u003ctd data-col-size=\"md\" data-end=\"2638\" data-start=\"2547\"\u003eListed by Iron City as compatible with 1100684\/B.\u003cspan data-state=\"closed\" class=\"\"\u003e\u003c\/span\u003e\n\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr data-end=\"2826\" data-start=\"2639\"\u003e\n\u003ctd data-col-size=\"sm\" data-end=\"2665\" data-start=\"2639\"\u003eClassic 350 UK \/ Euro V\u003c\/td\u003e\n\u003ctd data-col-size=\"sm\" data-end=\"2699\" data-start=\"2665\"\u003e349 cc single cylinder J-Series\u003c\/td\u003e\n\u003ctd data-col-size=\"sm\" data-end=\"2713\" data-start=\"2699\"\u003eUK \/ Euro V\u003c\/td\u003e\n\u003ctd data-col-size=\"md\" data-end=\"2766\" data-start=\"2713\"\u003eClassic 350 Dark Gunmetal Grey, Stealth Black etc.\u003c\/td\u003e\n\u003ctd data-col-size=\"md\" data-end=\"2826\" data-start=\"2766\"\u003eIron City listing.\u003cspan data-state=\"closed\" class=\"\"\u003e\u003c\/span\u003e\n\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr data-end=\"3042\" data-start=\"2827\"\u003e\n\u003ctd data-col-size=\"sm\" data-end=\"2847\" data-start=\"2827\"\u003eHunter 350 Dapper\u003c\/td\u003e\n\u003ctd data-col-size=\"sm\" data-end=\"2881\" data-start=\"2847\"\u003e349 cc single cylinder J-Series\u003c\/td\u003e\n\u003ctd data-col-size=\"sm\" data-end=\"2895\" data-start=\"2881\"\u003eUK \/ Euro V\u003c\/td\u003e\n\u003ctd data-col-size=\"md\" data-end=\"2945\" data-start=\"2895\"\u003eAll Dapper colour trims (Ash, Black, Blue etc.)\u003c\/td\u003e\n\u003ctd data-col-size=\"md\" data-end=\"3042\" data-start=\"2945\"\u003eConfirmed via Iron City stock clearance \/ product page. \u003cspan data-state=\"closed\" class=\"\"\u003e\u003cspan data-testid=\"webpage-citation-pill\" class=\"ms-1 inline-flex max-w-full items-center relative top-[-0.094rem] animate-[show_150ms_ease-in]\"\u003e\u003c\/span\u003e\u003c\/span\u003e\n\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003c\/tbody\u003e\n\u003c\/table\u003e\n\u003c\/div\u003e\n\u003c\/div\u003e\n\u003chr data-end=\"3047\" data-start=\"3044\"\u003e\n\u003cp data-end=\"3064\" data-start=\"3049\"\u003e\u003cstrong data-end=\"3062\" data-start=\"3049\"\u003eVariants:\u003c\/strong\u003e\u003c\/p\u003e\n\u003cul data-end=\"3236\" data-start=\"3065\"\u003e\n\u003cli data-end=\"3163\" data-start=\"3065\"\u003e\n\u003cp data-end=\"3163\" data-start=\"3067\"\u003e\u003cstrong data-end=\"3078\" data-start=\"3067\"\u003eFinish:\u003c\/strong\u003e Black (1100684\/B). No chrome or alternate finish under same part number confirmed.\u003c\/p\u003e\n\u003c\/li\u003e\n\u003cli data-end=\"3205\" data-start=\"3164\"\u003e\n\u003cp data-end=\"3205\" data-start=\"3166\"\u003e\u003cstrong data-end=\"3175\" data-start=\"3166\"\u003eSide:\u003c\/strong\u003e Front master cylinder only.\u003c\/p\u003e\n\u003c\/li\u003e\n\u003cli data-end=\"3236\" data-start=\"3206\"\u003e\n\u003cp data-end=\"3236\" data-start=\"3208\"\u003e\u003cstrong data-end=\"3221\" data-start=\"3208\"\u003eQuantity:\u003c\/strong\u003e Single unit.\u003c\/p\u003e\n\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003chr data-end=\"3241\" data-start=\"3238\"\u003e\n\u003cp data-end=\"3252\" data-start=\"3243\"\u003e\u003cstrong data-end=\"3252\" data-start=\"3243\"\u003eFAQs:\u003c\/strong\u003e\u003c\/p\u003e\n\u003col data-end=\"4587\" data-start=\"3254\"\u003e\n\u003cli data-end=\"3481\" data-start=\"3254\"\u003e\n\u003cp data-end=\"3481\" data-start=\"3257\"\u003e\u003cstrong data-end=\"3306\" data-start=\"3257\"\u003eIs 1100684\/B an OE (original equipment) part?\u003c\/strong\u003e\u003cbr data-end=\"3309\" data-start=\"3306\"\u003eYes, it is a genuine Royal Enfield front master cylinder assembly, as listed by RE’s official parts catalog and authorized dealers. \u003cspan data-state=\"closed\" class=\"\"\u003e\u003c\/span\u003e\u003c\/p\u003e\n\u003c\/li\u003e\n\u003cli data-end=\"3881\" data-start=\"3483\"\u003e\n\u003cp data-end=\"3881\" data-start=\"3486\"\u003e\u003cstrong data-end=\"3544\" data-start=\"3486\"\u003eWill this fit my Indian BS6 Meteor 350 or Classic 350?\u003c\/strong\u003e\u003cbr data-end=\"3547\" data-start=\"3544\"\u003eVendors in India list the part as “Meteor 350 Front Master Cylinder Assembly – Black part no. 1100684\/B.”  However, there are sometimes regional variations in brake system parts; matching your current master cylinder’s mounting, lever design and reservoir height is recommended before purchase.\u003c\/p\u003e\n\u003c\/li\u003e\n\u003cli data-end=\"4140\" data-start=\"3883\"\u003e\n\u003cp data-end=\"4140\" data-start=\"3886\"\u003e\u003cstrong data-end=\"3946\" data-start=\"3886\"\u003eDo I need to replace anything else when installing this?\u003c\/strong\u003e\u003cbr data-end=\"3949\" data-start=\"3946\"\u003eIt’s best to use new brake fluid, new seal washers for hose connections if required, and bleed the front brake circuit thoroughly. Check for any damage to hoses, lever mount, or reservoir.\u003c\/p\u003e\n\u003c\/li\u003e\n\u003cli data-end=\"4348\" data-start=\"4142\"\u003e\n\u003cp data-end=\"4348\" data-start=\"4145\"\u003e\u003cstrong data-end=\"4197\" data-start=\"4145\"\u003eHow to detect if the master cylinder is failing?\u003c\/strong\u003e\u003cbr data-end=\"4200\" data-start=\"4197\"\u003eCommon symptoms: spongy lever feel even after bleeding; visible fluid leak; lever bottoms out too close to grip; difficulty applying front brake.\u003c\/p\u003e\n\u003c\/li\u003e\n\u003cli data-end=\"4587\" data-start=\"4350\"\u003e\n\u003cp data-end=\"4587\" data-start=\"4353\"\u003e\u003cstrong data-end=\"4398\" data-start=\"4353\"\u003eIs this part painted\/coated or raw metal?\u003c\/strong\u003e\u003cbr data-end=\"4401\" data-start=\"4398\"\u003eThis version (1100684\/B) comes with a black-finish body (painted\/coated as per factory). The black finish matches trims on many UK\/Euro V models.\u003c\/p\u003e\n\u003c\/li\u003e\n\u003c\/ol\u003e","brand":"UNDER THE HOOD","offers":[{"title":"Default Title","offer_id":50181966725415,"sku":null,"price":2350.0,"currency_code":"INR","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0878\/7447\/0183\/files\/1100684_Front_master_cylinder_assy.png?v=1751550229","url":"https:\/\/underthehood.co.in\/products\/royal-enfield-1100684b-front-master-cylinder-black","provider":"UNDER THE HOOD","version":"1.0","type":"link"}