{"id":3034,"date":"2026-09-07T14:13:56","date_gmt":"2026-09-07T14:13:56","guid":{"rendered":"https:\/\/passionwebs.com\/elite-engines\/product\/wilwood-w4a-rear-disc-brake-kits-140-9407-dr\/"},"modified":"2026-09-07T14:13:56","modified_gmt":"2026-09-07T14:13:56","slug":"wilwood-w4a-rear-disc-brake-kits-140-9407-dr","status":"publish","type":"product","link":"https:\/\/passionwebs.com\/elite-engines\/product\/wilwood-w4a-rear-disc-brake-kits-140-9407-dr\/","title":{"rendered":"Wilwood W4A Rear Disc Brake Kits 140-9407-DR"},"content":{"rendered":"

Description<\/h2>\n

Overview<\/strong><\/p>\n

\n
Brand: <\/strong>Wilwood Disc Brakes<\/div>\n
Manufacturer\u2019s Part Number: <\/strong>140-9407-DR<\/div>\n
Part Type: <\/strong>Disc Brake Kits<\/div>\n
Product Line: <\/strong>Wilwood W4A Rear Disc Brake Kits<\/div>\n
Summit Racing Part Number: <\/strong>WIL-140-9407-DR<\/div>\n
UPC: <\/strong>889545031867<\/div>\n
Position: <\/strong>Rear<\/div>\n
Front Rotor Included: <\/strong>No<\/div>\n
Brake Rotor Bolt Pattern (in.): <\/strong>6 x 5.50 in.<\/div>\n
Brake Rotor Bolt Pattern (mm): <\/strong>6 x 139.70mm<\/div>\n
Rear Rotor Included: <\/strong>Yes<\/div>\n
Rear Rotor Style: <\/strong>Cross-drilled\/Slotted surface<\/div>\n
Rear Rotor Construction: <\/strong>Vented<\/div>\n
Rear Rotor Diameter: <\/strong>14.25 in.\/361.95mm<\/div>\n
Rear Rotor Thickness (in.): <\/strong>1.25<\/div>\n
Front Caliper Included: <\/strong>No<\/div>\n
Rear Caliper Included: <\/strong>Yes<\/div>\n
Rear Caliper Piston Quantity: <\/strong>Four<\/div>\n
Rear Caliper Material: <\/strong>Forged billet aluminum<\/div>\n
Rear Caliper Color: <\/strong>Red<\/div>\n
Brake Pads Included: <\/strong>Yes<\/div>\n
Friction Material Name: <\/strong>BP-20<\/div>\n
Parking Brake Provision: <\/strong>Yes<\/div>\n
Parking Brake Style: <\/strong>Internal drum<\/div>\n
Minimum Recommended Wheel Diameter (in.): <\/strong>18 in.<\/div>\n
Front Spindles Included: <\/strong>No<\/div>\n
Master Cylinder Included: <\/strong>No<\/div>\n
Brake Booster Included: <\/strong>No<\/div>\n
Remanufactured: <\/strong>No<\/div>\n
Brake Hoses Included: <\/strong>No<\/div>\n
Quantity: <\/strong>Sold as a kit.<\/div>\n
Special Attention: <\/strong>Replaces models with single rear piston calipers.<\/div>\n<\/div>\n

Wilwood W4A Rear Disc Brake Kits<\/strong><\/p>\n

These Wilwood W4A rear disc brake kits are designed to replace the factory disc brakes and still use the OEM parking brake assembly. They feature Wilwood\u2019s W4AR brake calipers, vented rotors, and BP-10 compound brake pads. Stop your ride quicker than ever before with one of these Wilwood W4A rear disc brake kits.<\/p>\n","protected":false},"excerpt":{"rendered":"

Disc Brakes, W4A, Rear, Slotted\/Drilled Rotors, 4-Piston Red Calipers, Chevy, GMC, Kit<\/p>\n","protected":false},"featured_media":3033,"comment_status":"open","ping_status":"closed","template":"","meta":{"site-sidebar-layout":"default","site-content-layout":"","ast-site-content-layout":"default","site-content-style":"default","site-sidebar-style":"default","ast-global-header-display":"","ast-banner-title-visibility":"","ast-main-header-display":"","ast-hfb-above-header-display":"","ast-hfb-below-header-display":"","ast-hfb-mobile-header-display":"","site-post-title":"","ast-breadcrumbs-content":"","ast-featured-img":"","footer-sml-layout":"","ast-disable-related-posts":"","theme-transparent-header-meta":"","adv-header-id-meta":"","stick-header-meta":"","header-above-stick-meta":"","header-main-stick-meta":"","header-below-stick-meta":"","astra-migrate-meta-layouts":"default","ast-page-background-enabled":"default","ast-page-background-meta":{"desktop":{"background-color":"var(--ast-global-color-5)","background-image":"","background-repeat":"repeat","background-position":"center center","background-size":"auto","background-attachment":"scroll","background-type":"","background-media":"","overlay-type":"","overlay-color":"","overlay-opacity":"","overlay-gradient":""},"tablet":{"background-color":"","background-image":"","background-repeat":"repeat","background-position":"center center","background-size":"auto","background-attachment":"scroll","background-type":"","background-media":"","overlay-type":"","overlay-color":"","overlay-opacity":"","overlay-gradient":""},"mobile":{"background-color":"","background-image":"","background-repeat":"repeat","background-position":"center center","background-size":"auto","background-attachment":"scroll","background-type":"","background-media":"","overlay-type":"","overlay-color":"","overlay-opacity":"","overlay-gradient":""}},"ast-content-background-meta":{"desktop":{"background-color":"var(--ast-global-color-4)","background-image":"","background-repeat":"repeat","background-position":"center center","background-size":"auto","background-attachment":"scroll","background-type":"","background-media":"","overlay-type":"","overlay-color":"","overlay-opacity":"","overlay-gradient":""},"tablet":{"background-color":"var(--ast-global-color-4)","background-image":"","background-repeat":"repeat","background-position":"center center","background-size":"auto","background-attachment":"scroll","background-type":"","background-media":"","overlay-type":"","overlay-color":"","overlay-opacity":"","overlay-gradient":""},"mobile":{"background-color":"var(--ast-global-color-4)","background-image":"","background-repeat":"repeat","background-position":"center center","background-size":"auto","background-attachment":"scroll","background-type":"","background-media":"","overlay-type":"","overlay-color":"","overlay-opacity":"","overlay-gradient":""}}},"product_brand":[],"product_cat":[17],"product_tag":[],"class_list":["post-3034","product","type-product","status-publish","has-post-thumbnail","product_cat-brake-systems","desktop-align-left","tablet-align-left","mobile-align-left","first","instock","shipping-taxable","purchasable","product-type-simple"],"_links":{"self":[{"href":"https:\/\/passionwebs.com\/elite-engines\/wp-json\/wp\/v2\/product\/3034","targetHints":{"allow":["GET"]}}],"collection":[{"href":"https:\/\/passionwebs.com\/elite-engines\/wp-json\/wp\/v2\/product"}],"about":[{"href":"https:\/\/passionwebs.com\/elite-engines\/wp-json\/wp\/v2\/types\/product"}],"replies":[{"embeddable":true,"href":"https:\/\/passionwebs.com\/elite-engines\/wp-json\/wp\/v2\/comments?post=3034"}],"wp:featuredmedia":[{"embeddable":true,"href":"https:\/\/passionwebs.com\/elite-engines\/wp-json\/wp\/v2\/media\/3033"}],"wp:attachment":[{"href":"https:\/\/passionwebs.com\/elite-engines\/wp-json\/wp\/v2\/media?parent=3034"}],"wp:term":[{"taxonomy":"product_brand","embeddable":true,"href":"https:\/\/passionwebs.com\/elite-engines\/wp-json\/wp\/v2\/product_brand?post=3034"},{"taxonomy":"product_cat","embeddable":true,"href":"https:\/\/passionwebs.com\/elite-engines\/wp-json\/wp\/v2\/product_cat?post=3034"},{"taxonomy":"product_tag","embeddable":true,"href":"https:\/\/passionwebs.com\/elite-engines\/wp-json\/wp\/v2\/product_tag?post=3034"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}