{"product_id":"bmw-s58-arp-625-custom-age-main-stud-kit","title":"BMW S58 ARP 625+ Custom Age Main Stud Kit","description":"\u003ch2\u003e\u003cspan\u003eARP S58 625+ Custom Age Main Stud Kit\u003c\/span\u003e\u003c\/h2\u003e\n\u003cp class=\"isSelectedEnd\"\u003e\u003cspan\u003eWhen we started developing our \u003c\/span\u003eS58 Billet Main Cap system\u003cspan\u003e, we needed a main stud strong enough to handle the extreme loads of high-horsepower S58 builds. Our friends at \u003c\/span\u003e\u003cstrong\u003e\u003cspan\u003eNRW\u003c\/span\u003e\u003c\/strong\u003e\u003cspan\u003e had the same need for their S58 Billet Block project, so we teamed up to develop a solution that would benefit the entire S58 performance community.\u003c\/span\u003e\u003c\/p\u003e\n\u003cp class=\"isSelectedEnd\"\u003e\u003cspan\u003eManufactured from \u003c\/span\u003e\u003cstrong\u003e\u003cspan\u003eARP 625+ Custom Age material\u003c\/span\u003e\u003c\/strong\u003e\u003cspan\u003e, these high-strength main studs provide exceptional tensile strength, fatigue resistance, and consistent clamping force for extreme-power applications. \u003c\/span\u003e\u003cspan\u003e\u003c\/span\u003e\u003c\/p\u003e\n\u003cp\u003e\u003cspan\u003eThis ARP Main Stud Kit is designed to replace BMW part number \u003cstrong\u003e11118604584\u003c\/strong\u003e for the \u003cstrong\u003eBMW S58\u003c\/strong\u003e engines found in high-performance models such as \u003cstrong\u003eG80\/G81\/G82\/G83 M3\/M4,\u003c\/strong\u003e \u003cstrong\u003eX3M F97, \u003c\/strong\u003eand\u003cstrong\u003e X4M F98. \u003c\/strong\u003e\u003c\/span\u003e\u003c\/p\u003e\n\u003ch3\u003e\u003cspan\u003eFeatures \u0026amp; Benefits\u003c\/span\u003e\u003c\/h3\u003e\n\u003cul\u003e\n\u003cli\u003eARP 625+ Custom Age material\u003c\/li\u003e\n\u003cli\u003e\u003cspan\u003eIncreased strength and fatigue resistance\u003c\/span\u003e\u003c\/li\u003e\n\u003cli\u003e\u003cspan\u003eMore consistent main-cap clamping\u003c\/span\u003e\u003c\/li\u003e\n\u003cli\u003e\u003cspan\u003eHelps minimize main-cap movement under extreme loads\u003c\/span\u003e\u003c\/li\u003e\n\u003cli\u003e\u003cspan\u003eImproved crankshaft and main-bearing alignment\u003c\/span\u003e\u003c\/li\u003e\n\u003cli\u003e\u003cspan\u003eIdeal for high-RPM and high-horsepower S58 builds\u003c\/span\u003e\u003c\/li\u003e\n\u003cli\u003e\u003cspan\u003eDirect replacement for BMW OEM main bolt part #11118604584\u003c\/span\u003e\u003c\/li\u003e\n\u003cli\u003e\n\u003cspan\u003eDesigned for use with \u003c\/span\u003e\u003cstrong\u003e\u003cspan\u003e5150 AutoSport Billet Main Caps\u003c\/span\u003e\u003c\/strong\u003e\u003cspan\u003e and \u003c\/span\u003e\u003cstrong\u003e\u003cspan\u003eNRW S58 Billet Blocks\u003c\/span\u003e\u003c\/strong\u003e\n\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003cp\u003e\u003cspan\u003e\u003cstrong\u003e\u003cem\u003eWhen opting for main studs instead of factory bolts,\u003c\/em\u003e\u003c\/strong\u003e\u003cspan style=\"color: #ff0b0b;\"\u003e\u003cstrong\u003e\u003cem\u003e it's important to note that the engine builder should mic the bores.\u003c\/em\u003e\u003c\/strong\u003e \u003cspan style=\"color: #000000;\"\u003eU\u003c\/span\u003e\u003c\/span\u003e\u003cspan style=\"color: #000000;\"\u003esi\u003c\/span\u003eng studs may require a line hone to ensure proper fitment and alignment. A line hone is a machining process that can be used to resize and reshape the main bearing bores, ensuring that they are perfectly round and concentric. \u003cstrong\u003e\u003cem\u003eThis is crucial for ensuring proper oil clearance and preventing premature bearing wear.\u003c\/em\u003e\u003c\/strong\u003e By mic'ing the bores and performing a line hone if necessary, engine builders can ensure that the main studs are installed correctly and that the engine will perform reliably and at its best.\u003c\/span\u003e\u003c\/p\u003e\n\u003cdiv role=\"presentation\" dir=\"ltr\"\u003e\n\u003ch3\u003e\u003cspan\u003eInstallation Instructions\u003c\/span\u003e\u003c\/h3\u003e\n\u003col start=\"1\"\u003e\n\u003cli\u003eThoroughly clean all threaded holes in the engine block. If necessary, use an ARP thread chaser to ensure clean threads and proper engagement.\u003c\/li\u003e\n\u003cli\u003eInspect all studs, nuts, and washers for damage and verify proper fit, length, and dimensions before installation.\u003c\/li\u003e\n\u003cli\u003eInstall the main studs into the engine block by hand until snug. Do not overtighten.\u003c\/li\u003e\n\u003cli\u003eInstall the main caps and check for proper fit, alignment, and any binding.\u003c\/li\u003e\n\u003cli\u003eApply ARP Ultra-Torque Fastener Assembly Lubricant to the stud threads, nuts, washers, and washer contact surfaces.\u003c\/li\u003e\n\u003cli\u003eInstall the washers and nuts and tighten them by hand. Do not substitute motor oil or other lubricants for ARP Ultra-Torque.\u003c\/li\u003e\n\u003cli\u003e\n\u003cp class=\"isSelectedEnd\"\u003eFollowing the manufacturer's recommended main-cap tightening sequence, torque all main stud nuts progressively in three steps using ARP Ultra-Torque:\u003c\/p\u003e\n\u003cp class=\"isSelectedEnd\"\u003e\u003cstrong\u003e\u003cspan\u003eStep 1:\u003c\/span\u003e\u003c\/strong\u003e\u003cspan\u003e 25 ft-lbs\u003c\/span\u003e\u003cbr\u003e\u003cstrong\u003e\u003cspan\u003eStep 2:\u003c\/span\u003e\u003c\/strong\u003e\u003cspan\u003e 50 ft-lbs\u003c\/span\u003e\u003cbr\u003e\u003cstrong\u003e\u003cspan\u003eStep 3:\u003c\/span\u003e\u003c\/strong\u003e\u003cspan\u003e 75 ft-lbs\u003c\/span\u003e\u003c\/p\u003e\n\u003c\/li\u003e\n\u003cli\u003eAfter final torque, measure the main bearing bores and verify proper size, roundness, and alignment.\u003c\/li\u003e\n\u003cli\u003eIf necessary, line hone the main bores with the ARP main studs installed and torqued to specification.\u003c\/li\u003e\n\u003cli\u003eVerify final main bearing oil clearances before engine assembly.\u003c\/li\u003e\n\u003c\/ol\u003e\n\u003c\/div\u003e\n\u003cdiv role=\"presentation\" dir=\"ltr\"\u003e\n\u003cspan\u003e\u003c\/span\u003e\u003cbr\u003e\n\u003c\/div\u003e\n\u003cdiv role=\"presentation\" dir=\"ltr\"\u003e\n\u003cdiv dir=\"ltr\" role=\"presentation\"\u003e\n\u003ch4\u003e\u003cstrong\u003eBMW S58 Applications:\u003c\/strong\u003e\u003c\/h4\u003e\n\u003cp\u003e\u003cstrong\u003e2 Series\u003c\/strong\u003e\u003c\/p\u003e\n\u003cp style=\"padding-left: 40px;\"\u003e2023-Present     G87     M2\u003c\/p\u003e\n\u003cp\u003e\u003cstrong\u003e3 Series\u003c\/strong\u003e\u003c\/p\u003e\n\u003cp style=\"padding-left: 40px;\"\u003e2021-Present     G80     M3\u003cbr\u003e\u003c\/p\u003e\n\u003cp\u003e\u003cstrong\u003e4 Series\u003c\/strong\u003e\u003c\/p\u003e\n\u003cp style=\"padding-left: 40px;\"\u003e2021-Present     G82\/G83     M4\u003cbr\u003e\u003c\/p\u003e\n\u003cp\u003e\u003cstrong\u003eX3 Series\u003c\/strong\u003e\u003c\/p\u003e\n\u003cp style=\"padding-left: 40px;\"\u003e2019-Present     F97     X3M\u003cbr\u003e\u003c\/p\u003e\n\u003cp\u003e\u003cstrong\u003eX4 Series\u003c\/strong\u003e\u003c\/p\u003e\n\u003cp style=\"padding-left: 40px;\"\u003e2019-Present     F98     X4M\u003c\/p\u003e\n\u003cbr\u003e\n\u003c\/div\u003e\n\u003c\/div\u003e","brand":"ARP Automotive Racing Products","offers":[{"title":"Default Title","offer_id":53839753118003,"sku":"ARP-MSK-S58-CA","price":799.99,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0735\/3827\/3587\/products\/ARP-Main-Stud-Kit-for-BMW-Engines_ac291d99-e821-4a0c-8947-978a973698b1.jpg?v=1680743748","url":"https:\/\/5150autosport.com\/sv\/products\/bmw-s58-arp-625-custom-age-main-stud-kit","provider":"5150 AutoSport","version":"1.0","type":"link"}