{"id":6012,"date":"2026-05-18T20:55:10","date_gmt":"2026-05-18T20:55:10","guid":{"rendered":"https:\/\/automotivebrakeandclutch.com\/index.php\/product\/new-brake-master-cylinder-1-inch-bore-size-fd6086-fd4564\/"},"modified":"2026-05-18T20:55:10","modified_gmt":"2026-05-18T20:55:10","slug":"new-brake-master-cylinder-1-inch-bore-size-fd6086-fd4564","status":"publish","type":"product","link":"https:\/\/automotivebrakeandclutch.com\/product\/new-brake-master-cylinder-1-inch-bore-size-fd6086-fd4564\/","title":{"rendered":"New Brake Master Cylinder 1-inch bore size FD6086 FD4564"},"content":{"rendered":"<div class=\"product-container\" style=\"font-family: 'Helvetica Neue', Helvetica, Arial, sans-serif; line-height: 1.6; color: #333; max-width: 900px; margin: 0 auto; border: 1px solid #eee; padding: 30px; border-radius: 8px; box-shadow: 0 4px 12px rgba(0,0,0,0.05);\">\n<h1 class=\"product-title\" style=\"color: #111; font-size: 28px; margin-bottom: 5px; letter-spacing: -0.5px;\">New Brake Master Cylinder 1-inch bore size FD6086 FD4564<\/h1>\n<p class=\"brand-slogan\" style=\"font-weight: bold; color: #666; margin-bottom: 25px; text-transform: uppercase; font-size: 13px; letter-spacing: 1px;\">Bexar Pro Components: Heavy-Duty Reliability for Fleet &#038; Industry.<\/p>\n<div class=\"product-description\" style=\"margin-bottom: 25px; font-size: 16px;\">\n        Restore your braking system to peak performance with the <strong>M608602<\/strong> Master Cylinder from <strong>Bexar Pro Components<\/strong>. Engineered with a precision 1-inch bore and high-grade materials, this unit is built for the rugged demands of <strong>heavy-duty fleet reliability<\/strong>, making it the ideal solution for <strong>classic automotive systems<\/strong> and specialized <strong>light industrial equipment<\/strong>.\n    <\/div>\n<h2 style=\"font-size: 18px; border-bottom: 2px solid #c00000; padding-bottom: 5px; color: #000; margin-bottom: 15px;\">Key Specifications &#038; Expert Features<\/h2>\n<ul class=\"feature-list\" style=\"list-style: none; padding: 0; margin: 0 0 25px 0;\">\n<li style=\"padding: 10px 0; border-bottom: 1px solid #eee;\"><strong>Bore Diameter:<\/strong> 1-inch bore size (Essential for single-circuit pressure calibration)<\/li>\n<li style=\"padding: 10px 0; border-bottom: 1px solid #eee;\"><strong>Outlet Size:<\/strong> Single 1\/2-20 INV (Secure hydraulic line connection)<\/li>\n<li style=\"padding: 10px 0; border-bottom: 1px solid #eee;\"><strong>Application:<\/strong> Classic cars, light commercial trucks, and industrial equipment.<\/li>\n<li style=\"padding: 10px 0;\"><strong>Companion Repair Kit:<\/strong> <a style=\"color: #c00000; font-weight: bold; text-decoration: none;\" href=\"https:\/\/automotivebrakeandclutch.com\/product\/mc-kit-137mk\/\">137MK (View Compatible Kit)<\/a><\/li>\n<\/ul>\n<h2 style=\"font-size: 18px; color: #000; margin-bottom: 10px;\">Verified Casting &#038; Part Numbers<\/h2>\n<p style=\"margin-bottom: 15px;\">Matching your existing part number is the most reliable method to ensure correct fitment. This unit replaces:<\/p>\n<ul class=\"casting-numbers\" style=\"list-style: none; padding: 0; margin: 0 0 30px 0; display: flex; flex-wrap: wrap; gap: 15px; font-family: monospace; font-size: 18px; font-weight: bold;\">\n<li style=\"background: #f4f4f4; padding: 6px 18px; border-radius: 4px; border-left: 4px solid #c00000; box-shadow: 2px 2px 5px rgba(0,0,0,0.05);\">FD6086<\/li>\n<li style=\"background: #f4f4f4; padding: 6px 18px; border-radius: 4px; border-left: 4px solid #c00000; box-shadow: 2px 2px 5px rgba(0,0,0,0.05);\">FD4564<\/li>\n<\/ul>\n<div style=\"background: #fcfcfc; border: 1px solid #e5e5e5; padding: 25px; border-radius: 6px; margin-bottom: 30px;\">\n<h3 style=\"font-size: 17px; margin-top: 0; color: #c00000; text-transform: uppercase; letter-spacing: 0.5px;\">Expert Installation &#038; Field Note<\/h3>\n<p style=\"margin-bottom: 0; font-size: 15px; line-height: 1.5;\">Based on our shop experience specializing in heavy-duty brakes since 1985: As a single-port, single-circuit master cylinder, maintaining system integrity is critical\u2014any fluid loss results in complete brake failure. During installation of the M608602, rigorously check all connections and linkage alignment. Note that while fitment is exact, the provided dust cover may vary slightly in style from the original unit.<\/p>\n<\/p><\/div>\n<div style=\"border: 2px solid #c00000; padding: 20px; background-color: #fffafa; border-radius: 4px; margin-bottom: 35px;\">\n<h4 style=\"color: #c00000; margin-top: 0; font-size: 16px; text-transform: uppercase;\">\u26a0 CRITICAL: Verify Specifications<\/h4>\n<p style=\"margin-bottom: 0; font-size: 15px;\">To ensure safety, verify that this master cylinder\u2019s <strong>1-inch bore size<\/strong> and <strong>SINGLE 1\/2-20 INV outlet port<\/strong> match your existing unit before purchasing.<\/p>\n<\/p><\/div>\n<div class=\"sleek-banner\" style=\"display: flex; align-items: stretch; border-radius: 6px; overflow: hidden; background: #c00000; min-height: 120px; border: 1px solid #c00000;\">\n<div style=\"background: #ffffff; padding: 20px; flex: 1; display: flex; justify-content: center; align-items: center; border: 8px solid #c00000;\">\n            <img decoding=\"async\" src=\"2026\/03\/bexar-pro-01-1.png\" alt=\"Bexar Pro Components\" style=\"width: 240px; height: auto; max-width: 100%;\">\n        <\/div>\n<div style=\"flex: 1.2; padding: 25px; color: #ffffff; display: flex; flex-direction: column; justify-content: center; text-align: left; background: #c00000;\">\n<p style=\"margin: 0; font-size: 13px; text-transform: uppercase; opacity: 0.9; letter-spacing: 1.5px; font-weight: 600;\">Bexar Pro Components<\/p>\n<p style=\"margin: 0; font-size: 28px; font-weight: 800; letter-spacing: 1px; color: #ffffff; text-shadow: 1px 1px 2px rgba(0,0,0,0.2);\">SKU: M608602<\/p>\n<\/p><\/div><\/div>\n<div style=\"text-align: center; margin-top: 25px;\">\n        <a class=\"cta-button\" href=\"https:\/\/automotivebrakeandclutch.com\/master-cylinder-replacement\/\" style=\"background: #333; color: #fff; padding: 14px 28px; text-decoration: none; border-radius: 4px; font-weight: bold; display: inline-block; font-size: 14px;\">Official Master Cylinder Installation Guide<\/a>\n    <\/div>\n<\/div>\n","protected":false},"excerpt":{"rendered":"<p>New Brake Master Cylinder 1-inch bore size FD6086 FD4564 Bexar Pro Components: Heavy-Duty Reliability for Fleet &#038; Industry. Restore your braking system to peak performance with the M608602 Master Cylinder from Bexar Pro Components. Engineered with a precision 1-inch bore and high-grade materials, this unit is built for the rugged demands of heavy-duty fleet reliability,<\/p>\n","protected":false},"featured_media":0,"comment_status":"closed","ping_status":"closed","template":"","meta":{"_coblocks_attr":"","_coblocks_dimensions":"","_coblocks_responsive_height":"","_coblocks_accordion_ie_support":""},"product_brand":[18],"product_cat":[21,17],"product_tag":[],"class_list":{"0":"post-6012","1":"product","2":"type-product","3":"status-publish","5":"product_brand-bexar-pro-componets","6":"product_cat-brake-master-cylinders","7":"product_cat-view-all-products","9":"first","10":"instock","11":"taxable","12":"shipping-taxable","13":"purchasable","14":"product-type-simple"},"yoast_head":"<!-- This site is optimized with the Yoast SEO plugin v27.6 - https:\/\/yoast.com\/product\/yoast-seo-wordpress\/ -->\n<title>M608602 Brake Master Cylinder | 1-inch Bore | Bexar Pro Components<\/title>\n<meta name=\"description\" content=\"Shop the M608602 Heavy-Duty Master Cylinder from Bexar Pro. 1-inch bore size for classic cars &amp; light trucks. Replaces FD6086. Expert support since 1985.\" \/>\n<meta name=\"robots\" content=\"index, follow, max-snippet:-1, max-image-preview:large, max-video-preview:-1\" \/>\n<link rel=\"canonical\" href=\"https:\/\/automotivebrakeandclutch.com\/index.php\/product\/new-brake-master-cylinder-1-inch-bore-size-fd6086-fd4564\/\" \/>\n<meta property=\"og:locale\" content=\"en_US\" \/>\n<meta property=\"og:type\" content=\"article\" \/>\n<meta property=\"og:title\" content=\"M608602 Brake Master Cylinder | 1-inch Bore | Bexar Pro Components\" \/>\n<meta property=\"og:description\" content=\"Shop the M608602 Heavy-Duty Master Cylinder from Bexar Pro. 1-inch bore size for classic cars &amp; light trucks. Replaces FD6086. Expert support since 1985.\" \/>\n<meta property=\"og:url\" content=\"https:\/\/automotivebrakeandclutch.com\/index.php\/product\/new-brake-master-cylinder-1-inch-bore-size-fd6086-fd4564\/\" \/>\n<meta property=\"og:site_name\" content=\"Automotive Brake &amp; Clutch\" \/>\n<meta name=\"twitter:card\" content=\"summary_large_image\" \/>\n<meta name=\"twitter:label1\" content=\"Est. reading time\" \/>\n\t<meta name=\"twitter:data1\" content=\"3 minutes\" \/>\n<script type=\"application\/ld+json\" class=\"yoast-schema-graph\">{\"@context\":\"https:\\\/\\\/schema.org\",\"@graph\":[{\"@type\":\"WebPage\",\"@id\":\"https:\\\/\\\/automotivebrakeandclutch.com\\\/index.php\\\/product\\\/new-brake-master-cylinder-1-inch-bore-size-fd6086-fd4564\\\/\",\"url\":\"https:\\\/\\\/automotivebrakeandclutch.com\\\/index.php\\\/product\\\/new-brake-master-cylinder-1-inch-bore-size-fd6086-fd4564\\\/\",\"name\":\"M608602 Brake Master Cylinder | 1-inch Bore | Bexar Pro Components\",\"isPartOf\":{\"@id\":\"https:\\\/\\\/automotivebrakeandclutch.com\\\/#website\"},\"datePublished\":\"2026-05-18T20:55:10+00:00\",\"description\":\"Shop the M608602 Heavy-Duty Master Cylinder from Bexar Pro. 1-inch bore size for classic cars &amp; light trucks. 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