{"product_id":"shimano-bl-mt401-br-mt420-4-piston-hydraulic-disc-brake-set","title":"Shimano BL-MT401\/BR-MT420 4-Piston Hydraulic Disc Brake Set Left\/Right\/Set-Bulk","description":"\u003cstyle type=\"text\/css\"\u003e.yanzo-tab-container {\n    font-family: -apple-system, BlinkMacSystemFont, \"Segoe UI\", Roboto, sans-serif;\n    margin-top: 15px;\n    width: 100%;\n    box-sizing: border-box;\n  }\n\n  \/* 隐藏单选框原生的 radio 按钮 *\/\n  .yanzo-tab-container input[type=\"radio\"] {\n    display: none;\n  }\n\n  \/* 采用 4 列等宽网格（Grid 1:1:1:1） *\/\n  .yanzo-tab-headers {\n    display: grid;\n    grid-template-columns: repeat(4, 1fr);\n    border-bottom: 2px solid #E5E7EB;\n    margin-bottom: 20px;\n    width: 100%;\n    text-align: center;\n  }\n\n  .yanzo-tab-headers label {\n    padding: 10px 0;\n    font-size: 11px;\n    font-weight: 700;\n    letter-spacing: 0.2px;\n    color: #6B7280;\n    background: none;\n    border-bottom: 2px solid transparent;\n    margin-bottom: -2px;\n    cursor: pointer;\n    text-transform: uppercase;\n    transition: all 0.2s ease;\n    white-space: nowrap;\n    overflow: hidden;\n    text-overflow: ellipsis;\n  }\n\n  \/* 选中状态下的 Tab 按钮样式 *\/\n  #tab-desc:checked ~ .yanzo-tab-headers label[for=\"tab-desc\"],\n  #tab-specs:checked ~ .yanzo-tab-headers label[for=\"tab-specs\"],\n  #tab-qa:checked ~ .yanzo-tab-content #content-qa,\n  #tab-shipping:checked ~ .yanzo-tab-headers label[for=\"tab-shipping\"] {\n    color: #111827;\n    border-bottom-color: #111827;\n  }\n\n  \/* 内容面板默认隐藏 *\/\n  .yanzo-tab-panel {\n    display: none;\n  }\n\n  \/* 根据选中的 Radio 显示对应的内容面板 *\/\n  #tab-desc:checked ~ .yanzo-tab-content #content-desc,\n  #tab-specs:checked ~ .yanzo-tab-content #content-specs,\n  #tab-qa:checked ~ .yanzo-tab-content #content-qa,\n  #tab-shipping:checked ~ .yanzo-tab-content #content-shipping {\n    display: block;\n  }\n\n  \/* 详情页排版样式 *\/\n  .yanzo-h2 {\n    font-size: 17px;\n    font-weight: 800;\n    letter-spacing: 0.5px;\n    text-transform: uppercase;\n    margin: 0 0 6px 0;\n    color: #111827;\n  }\n  .yanzo-subhead {\n    font-size: 12px;\n    font-weight: 700;\n    text-transform: uppercase;\n    color: #4B5563;\n    margin: 0 0 12px 0;\n    letter-spacing: 0.3px;\n  }\n  .yanzo-intro {\n    font-size: 13px;\n    line-height: 1.6;\n    color: #4B5563;\n    margin-bottom: 20px;\n    padding-bottom: 16px;\n    border-bottom: 1px solid #F3F4F6;\n  }\n  .yanzo-features-title {\n    font-size: 14px;\n    font-weight: 800;\n    text-transform: uppercase;\n    letter-spacing: 0.5px;\n    margin-bottom: 10px;\n  }\n  .yanzo-list {\n    margin: 0;\n    padding-left: 18px;\n  }\n  .yanzo-list li {\n    font-size: 13px;\n    line-height: 1.6;\n    color: #374151;\n    margin-bottom: 8px;\n  }\n  .yanzo-list li strong {\n    color: #111827;\n  }\n\n  \/* Q\u0026A 专属样式 *\/\n  .yanzo-qa-item {\n    margin-bottom: 16px;\n    padding-bottom: 12px;\n    border-bottom: 1px dashed #E5E7EB;\n  }\n  .yanzo-qa-item:last-child {\n    border-bottom: none;\n  }\n  .yanzo-qa-q {\n    font-size: 13px;\n    font-weight: 700;\n    color: #111827;\n    margin-bottom: 4px;\n    display: flex;\n    gap: 6px;\n  }\n  .yanzo-qa-a {\n    font-size: 13px;\n    line-height: 1.5;\n    color: #4B5563;\n    padding-left: 22px;\n  }\n\u003c\/style\u003e\n\u003cdiv class=\"yanzo-tab-container\"\u003e\n\u003c!-- 隐藏的控制状态 Radio 按钮 --\u003e\u003cinput checked id=\"tab-desc\" name=\"yanzo-tabs\" type=\"radio\"\u003e \u003cinput id=\"tab-specs\" name=\"yanzo-tabs\" type=\"radio\"\u003e \u003cinput id=\"tab-qa\" name=\"yanzo-tabs\" type=\"radio\"\u003e \u003cinput id=\"tab-shipping\" name=\"yanzo-tabs\" type=\"radio\"\u003e \u003c!-- 网格平分 4 个 Tab 按钮 --\u003e\n\u003cdiv class=\"yanzo-tab-headers\"\u003e\n\u003clabel for=\"tab-desc\"\u003eDETAILS\u003c\/label\u003e \u003clabel for=\"tab-specs\"\u003eSPECS\u003c\/label\u003e \u003clabel for=\"tab-qa\"\u003eQ\u0026amp;A\u003c\/label\u003e \u003clabel for=\"tab-shipping\"\u003eSHIPPING\u003c\/label\u003e\n\u003c\/div\u003e\n\u003c!-- 选项卡对应的具体内容区域 --\u003e\n\n\u003cdiv class=\"yanzo-tab-content\"\u003e\n\u003c!-- 面板 1: DETAILS --\u003e\n\u003cdiv class=\"yanzo-tab-panel\" id=\"content-desc\"\u003e\n\u003cdiv class=\"yanzo-h2\"\u003eSHIMANO BL-MT401 \/ BR-MT420 4-PISTON HYDRAULIC DISC BRAKE SET\u003c\/div\u003e\n\n\u003cdiv class=\"yanzo-subhead\"\u003eHIGH-POWER 4-PISTON CALIPERS WITH SLIM BL-MT401 ERGONOMIC LEVERS FOR TRAIL, ENDURO \u0026amp; E-MTB — AVAILABLE FRONT, REAR \u0026amp; FULL SET (OEM BULK)\u003c\/div\u003e\n\n\u003cdiv class=\"yanzo-intro\"\u003eTackle aggressive trails and heavy-duty riding with confidence using the genuine \u003cstrong\u003eShimano BL-MT401 \/ BR-MT420 Hydraulic Disc Brake System\u003c\/strong\u003e. By pairing the slim, 2-finger \u003cstrong\u003eBL-MT401 aluminum brake lever\u003c\/strong\u003e with the powerful \u003cstrong\u003eBR-MT420 4-piston caliper\u003c\/strong\u003e, this setup delivers 20% more stopping power compared to standard 2-piston MT200\/MT400 systems, along with faster initial pad contact and reduced rotor noise. Available as an assembled front brake (1000mm hose), an easy-routing J-Kit rear brake (1700mm hose), or a complete front + rear performance set.\u003c\/div\u003e\n\n\u003cdiv class=\"yanzo-features-title\"\u003eFEATURES\u003c\/div\u003e\n\n\u003cul class=\"yanzo-list\"\u003e\n\t\u003cli\u003e\n\u003cstrong\u003eHigh-Power 4-Piston Caliper (BR-MT420):\u003c\/strong\u003e Features four ceramic pistons for greater stopping power, consistent heat dissipation, and superior braking modulation on steep descents.\u003c\/li\u003e\n\t\u003cli\u003e\n\u003cstrong\u003eErgonomic Slim Lever (BL-MT401):\u003c\/strong\u003e Anodized 2-finger aluminum lever designed specifically for smaller hands and tight handlebar cockpits with adjustable reach.\u003c\/li\u003e\n\t\u003cli\u003e\n\u003cstrong\u003eEasy Frame Routing (Rear J-Kit):\u003c\/strong\u003e Rear brake comes in a disconnected J-Kit setup (pre-bled lever and hose with pre-installed olive) for effortless internal frame routing before quick connection.\u003c\/li\u003e\n\t\u003cli\u003e\n\u003cstrong\u003ePre-Bled Front System:\u003c\/strong\u003e Front brake arrives fully assembled, pre-bled, and ready to bolt directly onto your fork out of the box.\u003c\/li\u003e\n\t\u003cli\u003e\n\u003cstrong\u003eResin Pad Included:\u003c\/strong\u003e Comes fitted with organic resin pads for quiet operation and immediate bite response.\u003c\/li\u003e\n\t\u003cli\u003e\n\u003cstrong\u003eOEM Workshop Packaging:\u003c\/strong\u003e 100% authentic Shimano quality supplied in economical bulk packaging without retail box markups.\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003c\/div\u003e\n\u003c!-- 面板 2: SPECS --\u003e\n\n\u003cdiv class=\"yanzo-tab-panel\" id=\"content-specs\"\u003e\n\u003cul class=\"yanzo-list\"\u003e\n\t\u003cli\u003e\n\u003cstrong\u003eBrand:\u003c\/strong\u003e Shimano\u003c\/li\u003e\n\t\u003cli\u003e\n\u003cstrong\u003eBrake Lever Model:\u003c\/strong\u003e BL-MT401 (Slim 2-Finger Lever)\u003c\/li\u003e\n\t\u003cli\u003e\n\u003cstrong\u003eCaliper Model:\u003c\/strong\u003e BR-MT420 (4-Piston Hydraulic Caliper)\u003c\/li\u003e\n\t\u003cli\u003e\n\u003cstrong\u003eBrake Type:\u003c\/strong\u003e Hydraulic Disc Brake\u003c\/li\u003e\n\t\u003cli\u003e\n\u003cstrong\u003eFluid Type:\u003c\/strong\u003e Shimano Mineral Oil\u003c\/li\u003e\n\t\u003cli\u003e\n\u003cstrong\u003eHose Lengths:\u003c\/strong\u003e Front Left ~1000mm \/ Rear Right ~1700mm\u003c\/li\u003e\n\t\u003cli\u003e\n\u003cstrong\u003eConfiguration Options:\u003c\/strong\u003e\u003cbr\u003e\n\t• \u003cem\u003eFront Left (1000mm):\u003c\/em\u003e Pre-bled \u0026amp; Fully Assembled\u003cbr\u003e\n\t• \u003cem\u003eRear Right (1700mm):\u003c\/em\u003e Disconnected J-Kit for Internal Routing (Pre-Bled)\u003cbr\u003e\n\t• \u003cem\u003eFront + Rear Set:\u003c\/em\u003e Includes both Front 1000mm and Rear 1700mm J-Kit\u003c\/li\u003e\n\t\u003cli\u003e\n\u003cstrong\u003eBrake Pad Type:\u003c\/strong\u003e Resin Pads (D03S \/ NO3A \/ B05S-RX compatible)\u003c\/li\u003e\n\t\u003cli\u003e\n\u003cstrong\u003eMount Type:\u003c\/strong\u003e Post Mount (IS Mount adapters sold separately)\u003c\/li\u003e\n\t\u003cli\u003e\n\u003cstrong\u003ePackaging:\u003c\/strong\u003e Genuine Shimano Workshop \/ OEM Bulk Packaging\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003c\/div\u003e\n\u003c!-- 面板 3: Q\u0026A --\u003e\n\n\u003cdiv class=\"yanzo-tab-panel\" id=\"content-qa\"\u003e\n\u003cdiv class=\"yanzo-qa-item\"\u003e\n\u003cdiv class=\"yanzo-qa-q\"\u003e\n\u003cspan\u003eQ:\u003c\/span\u003e What is a \"J-Kit\" (Easy Hose Connection System)?\u003c\/div\u003e\n\n\u003cdiv class=\"yanzo-qa-a\"\u003eA: The rear brake comes as a J-Kit setup where the brake lever is pre-bled and capped, and the hose has an olive pre-installed. This makes it extremely easy to route the hose internally through your bike frame before connecting it to the lever without spilling oil or needing a full bleed in most cases.\u003c\/div\u003e\n\u003c\/div\u003e\n\n\u003cdiv class=\"yanzo-qa-item\"\u003e\n\u003cdiv class=\"yanzo-qa-q\"\u003e\n\u003cspan\u003eQ:\u003c\/span\u003e How much more powerful is the BR-MT420 4-piston caliper compared to 2-piston brakes?\u003c\/div\u003e\n\n\u003cdiv class=\"yanzo-qa-a\"\u003eA: The BR-MT420 4-piston design offers approximately 20% more braking power and increased pad wear resistance compared to standard 2-piston models like MT200 or MT400, making it ideal for Trail, Enduro, and E-MTBs.\u003c\/div\u003e\n\u003c\/div\u003e\n\n\u003cdiv class=\"yanzo-qa-item\"\u003e\n\u003cdiv class=\"yanzo-qa-q\"\u003e\n\u003cspan\u003eQ:\u003c\/span\u003e Are disc rotors and frame mounting adapters included?\u003c\/div\u003e\n\n\u003cdiv class=\"yanzo-qa-a\"\u003eA: No, this listing includes the pre-filled brake lever, hose, and 4-piston caliper with pads. Rotors and post-mount adapters are sold separately.\u003c\/div\u003e\n\u003c\/div\u003e\n\u003c\/div\u003e\n\u003c!-- 面板 4: SHIPPING --\u003e\n\n\u003cdiv class=\"yanzo-tab-panel\" id=\"content-shipping\"\u003e\n\u003cul class=\"yanzo-list\"\u003e\n\t\u003cli\u003e\n\u003cstrong\u003eProcessing Time:\u003c\/strong\u003e Ships within 24–48 hours from our California warehouse.\u003c\/li\u003e\n\t\u003cli\u003e\n\u003cstrong\u003eDelivery Time:\u003c\/strong\u003e Standard shipping usually arrives within 3–7 business days across the US mainland.\u003c\/li\u003e\n\t\u003cli\u003e\n\u003cstrong\u003eTracking:\u003c\/strong\u003e Tracking information will be emailed immediately once your package is dispatched.\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003c\/div\u003e\n\u003c\/div\u003e\n\u003c\/div\u003e\n","brand":"Shimano","offers":[{"title":"Left Connected Only(900mm)","offer_id":67536523362604,"sku":"MK247-US-Left Connected Only(900mm)","price":52.99,"currency_code":"USD","in_stock":true},{"title":"Right Split Only(1700mm)","offer_id":67536523395372,"sku":"MK247-US-Right Split Only(1700mm)","price":59.99,"currency_code":"USD","in_stock":true},{"title":"Left\u0026Right Set","offer_id":67536523428140,"sku":"MK247-US-Left\u0026Right Set","price":105.99,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0944\/3357\/5212\/files\/Shimano_BL-MT401_BR-MT420_4_piston_hydraulic_disc_brake_set_front_1000mm_rear_1700mm_Set.png?v=1790580628","url":"https:\/\/yanzocycling.com\/products\/shimano-bl-mt401-br-mt420-4-piston-hydraulic-disc-brake-set","provider":"YanzoCycling","version":"1.0","type":"link"}