{"id":3199,"date":"2026-09-07T14:14:51","date_gmt":"2026-09-07T14:14:51","guid":{"rendered":"https:\/\/passionwebs.com\/elite-engines\/product\/wilwood-forged-narrow-superlite-4r-big-brake-front-brake-kits-140-12440-r\/"},"modified":"2026-09-07T14:14:51","modified_gmt":"2026-09-07T14:14:51","slug":"wilwood-forged-narrow-superlite-4r-big-brake-front-brake-kits-140-12440-r","status":"publish","type":"product","link":"https:\/\/passionwebs.com\/elite-engines\/product\/wilwood-forged-narrow-superlite-4r-big-brake-front-brake-kits-140-12440-r\/","title":{"rendered":"Wilwood Forged Narrow Superlite 4R Big Brake Front Brake Kits 140-12440-R"},"content":{"rendered":"

Description<\/h2>\n

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

\n
Brand: <\/strong>Wilwood Disc Brakes<\/div>\n
Manufacturer\u2019s Part Number: <\/strong>140-12440-R<\/div>\n
Part Type: <\/strong>Disc Brake Kits<\/div>\n
Product Line: <\/strong>Wilwood Forged Narrow Superlite 4R Big Brake Front Brake Kits<\/div>\n
Summit Racing Part Number: <\/strong>WIL-140-12440-R<\/div>\n
UPC: <\/strong>889545016499<\/div>\n
Position: <\/strong>Front<\/div>\n
Front Rotor Included: <\/strong>Yes<\/div>\n
Front Rotor Style: <\/strong>Slotted surface<\/div>\n
Front Rotor Construction: <\/strong>Vented<\/div>\n
Front Rotor Diameter: <\/strong>14.00 in.\/355.60mm<\/div>\n
Front Rotor Thickness (in.): <\/strong>1.25 in.<\/div>\n
Brake Rotor Bolt Pattern (in.): <\/strong>5 x 5.00 in.<\/div>\n
Brake Rotor Bolt Pattern (mm): <\/strong>5 x 127.00mm<\/div>\n
Rear Rotor Included: <\/strong>No<\/div>\n
Front Caliper Included: <\/strong>Yes<\/div>\n
Front Caliper Piston Quantity: <\/strong>Six<\/div>\n
Front Caliper Material: <\/strong>Forged billet aluminum<\/div>\n
Front Caliper Color: <\/strong>Red<\/div>\n
Rear Caliper Included: <\/strong>No<\/div>\n
Brake Pads Included: <\/strong>Yes<\/div>\n
Friction Material Name: <\/strong>BP-20<\/div>\n
Parking Brake Provision: <\/strong>No<\/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
Notes: <\/strong>Designed for use with factory disc spindles.<\/div>\n<\/div>\n

Wilwood Forged Narrow Superlite 4R Big Brake Front Brake Kits<\/strong><\/p>\n

Lifted 4x4s with taller and heavier tire and wheel combinations need Wilwood Forged Narrow Superlite 4R big brake front brake kits to restore stopping power. SL4 kits are specifically engineered per application, but all revolve around Forged Narow Superlite 4R four-piston stainless steel calipers with their 4-symmetrical bores and high clamping force. Oversized, proprietary iron alloy, Spec 37 rotors withstand extreme temperatures and have a high degree of resistance to warping, cracking, distortion, and wear. Both of these parts are built to work hard without issues, but Wilwood\u2019s kit doesn\u2019t stop there. They also feature forged aluminum mounting hats, BP-10 Smart Pads to increase friction and reduce pad dust, radial mounting brackets, and hardware. Custom wheels and tall tires give character and off-road prowess, but if you can\u2019t stop them you\u2019re destined to hurt yourself and many others. Wilwood Forged Narrow Superlite 4R big brake front brake kits will help reel in your beast.<\/p>\n","protected":false},"excerpt":{"rendered":"

Disc Brakes, Forged Narrow Superlite 6R Big Brake, Front, Slotted Surface Rotors, Red Calipers, Jeep, Kit<\/p>\n","protected":false},"featured_media":3198,"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-3199","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\/3199","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=3199"}],"wp:featuredmedia":[{"embeddable":true,"href":"https:\/\/passionwebs.com\/elite-engines\/wp-json\/wp\/v2\/media\/3198"}],"wp:attachment":[{"href":"https:\/\/passionwebs.com\/elite-engines\/wp-json\/wp\/v2\/media?parent=3199"}],"wp:term":[{"taxonomy":"product_brand","embeddable":true,"href":"https:\/\/passionwebs.com\/elite-engines\/wp-json\/wp\/v2\/product_brand?post=3199"},{"taxonomy":"product_cat","embeddable":true,"href":"https:\/\/passionwebs.com\/elite-engines\/wp-json\/wp\/v2\/product_cat?post=3199"},{"taxonomy":"product_tag","embeddable":true,"href":"https:\/\/passionwebs.com\/elite-engines\/wp-json\/wp\/v2\/product_tag?post=3199"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}