{"product_id":"king-engine-bearings-subaru-fa-fb-size-025-oversized-main-bearing-set","title":"King SI Series Main Bearings (0.026mm Undersize) – Toyota 86 \/ GR86 \u0026 Subaru BRZ (FA20\/FA24)","description":"\u003cp\u003e\u003cimg src=\"https:\/\/cdn.shopify.com\/s\/files\/1\/0273\/1491\/files\/king_Logo.png?v=1792931991\" alt=\"kingLogo\" style=\"display: block; margin-left: auto; margin-right: auto;\" width=\"408\" height=\"127\"\u003e\u003c\/p\u003e\u003chr\u003e\u003ch2 style=\"text-align: center;\" dir=\"ltr\"\u003e\u003cspan\u003eOVERVIEW\u003c\/span\u003e\u003c\/h2\u003e\u003cp\u003eThe King SI-Series Main Bearing Set (MB5745SI.026) is engineered as an upgraded OE-replacement main bearing set for Subaru FA20\/FA24 and Toyota 4U-GSE\/FA24D engines requiring a 0.026mm undersize fitment. Constructed with King's lead-free silicon-aluminum bi-metal alloy, this set provides precise oil clearance when assembling engines with micro-polished or light-ground crankshaft main journals.\u003c\/p\u003e\u003cp\u003e \u003c\/p\u003e\u003chr\u003e\u003ch2 style=\"text-align: center;\" dir=\"ltr\"\u003e\u003cspan\u003eFEATURES\u003c\/span\u003e\u003c\/h2\u003e\u003cul\u003e\n\u003cli role=\"presentation\" dir=\"ltr\"\u003e\u003cspan\u003e\u003cstrong\u003eSilicon-Aluminum Bi-Metal Alloy:\u003c\/strong\u003e Advanced lead-free material featuring 2.5–3% silicon for exceptional surface hardness and wear resistance.\u003c\/span\u003e\u003c\/li\u003e\n\u003cli role=\"presentation\" dir=\"ltr\"\u003e\u003cspan\u003e\u003cstrong\u003e0.026mm Machinists Undersize:\u003c\/strong\u003e Engineered specifically for crankshaft main journals with micro-polishing or light grinding to achieve exact oil clearance.\u003c\/span\u003e\u003c\/li\u003e\n\u003cli role=\"presentation\" dir=\"ltr\"\u003e\u003cspan\u003e\u003cstrong\u003eOptimized Oil Delivery:\u003c\/strong\u003e Precision-grooved halves ensure reliable oil distribution across main journals under all engine operating temperatures.\u003c\/span\u003e\u003c\/li\u003e\n\u003cli role=\"presentation\" dir=\"ltr\"\u003e\u003cspan\u003e\u003cstrong\u003eHigh-Micro Finish Consistency:\u003c\/strong\u003e Manufactured to strict wall thickness tolerances to eliminate clearance variance across main caps.\u003c\/span\u003e\u003c\/li\u003e\n\u003c\/ul\u003e\u003cp\u003e \u003c\/p\u003e\u003chr\u003e\u003ch2 style=\"text-align: center;\" dir=\"ltr\"\u003e\u003cspan\u003eWHAT IS INCLUDED\u003c\/span\u003e\u003c\/h2\u003e\u003cul\u003e\u003cli role=\"presentation\" dir=\"ltr\"\u003e\u003cspan\u003e(1) King Engine Bearings SI-Series Main Bearing Set (Complete 10-Piece Main Bearing Set - 0.026mm Undersize)\u003c\/span\u003e\u003c\/li\u003e\u003c\/ul\u003e\u003chr\u003e\u003ch2 style=\"text-align: center;\" dir=\"ltr\"\u003e\u003cspan\u003eSPECIFICATIONS\u003c\/span\u003e\u003c\/h2\u003e\u003cul\u003e\n\u003cli dir=\"ltr\"\u003e\u003cspan\u003e\u003cstrong\u003ePart Number:\u003c\/strong\u003e MB5745SI.026 (MB5745SI 0.026)\u003c\/span\u003e\u003c\/li\u003e\n\u003cli dir=\"ltr\"\u003e\u003cspan\u003e\u003cstrong\u003eSeries:\u003c\/strong\u003e SI-Series (Bi-Metal OE-Replacement \/ Upgrade)\u003c\/span\u003e\u003c\/li\u003e\n\u003cli dir=\"ltr\"\u003e\u003cspan\u003e\u003cstrong\u003eMaterial:\u003c\/strong\u003e Aluminum-Silicon Bi-Metal Alloy\u003c\/span\u003e\u003c\/li\u003e\n\u003cli dir=\"ltr\"\u003e\u003cspan\u003e\u003cstrong\u003eJournal Size:\u003c\/strong\u003e 0.026mm Undersize\u003c\/span\u003e\u003c\/li\u003e\n\u003cli dir=\"ltr\"\u003e\u003cspan\u003e\u003cstrong\u003eWarranty:\u003c\/strong\u003e 12 Months\u003c\/span\u003e\u003c\/li\u003e\n\u003cli dir=\"ltr\"\u003e\u003cspan\u003e\u003cstrong\u003eInstallation Time:\u003c\/strong\u003e Professional Engine Assembly Required\u003c\/span\u003e\u003c\/li\u003e\n\u003cli dir=\"ltr\"\u003e\u003cspan\u003e\u003cstrong\u003eDifficulty:\u003c\/strong\u003e Advanced \/ Engine Overhaul\u003c\/span\u003e\u003c\/li\u003e\n\u003c\/ul\u003e\u003chr\u003e\u003ch2 style=\"text-align: center;\" dir=\"ltr\"\u003e\u003cspan\u003eFITMENT\u003c\/span\u003e\u003c\/h2\u003e\u003cul\u003e\n\u003cli dir=\"ltr\"\u003e\u003cspan\u003e2013-2020 Toyota 86 \/ Scion FR-S \/ Subaru BRZ (ZN6 \/ ZC6 - FA20 \/ 4U-GSE Engine)\u003c\/span\u003e\u003c\/li\u003e\n\u003cli dir=\"ltr\"\u003e\u003cspan\u003e2022-2026 Toyota GR86 \/ Subaru BRZ (ZN8 \/ ZD8 - FA24 \/ FA24D Engine)\u003c\/span\u003e\u003c\/li\u003e\n\u003cli dir=\"ltr\"\u003e\u003cspan\u003e\u003cem\u003eReplaces OEM Part Numbers: 12209AA650, 12209-AA650\u003c\/em\u003e\u003c\/span\u003e\u003c\/li\u003e\n\u003c\/ul\u003e\u003chr\u003e\u003cp style=\"text-align: center; font-size: 0.85em; color: #555;\"\u003e\u003cem\u003e\u003cstrong\u003eWARNING:\u003c\/strong\u003e California Proposition 65 — This product contains chemicals known to the State of California to cause cancer, birth defects, or other reproductive harm. Intended for competition \/ off-road use only.\u003c\/em\u003e\u003c\/p\u003e","brand":"King Engine Bearings","offers":[{"title":"Default Title","offer_id":68059436286164,"sku":"KINGMB5745SI.026","price":120.56,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0273\/1491\/files\/3a98ab869d3fa26a280d083a5a333652L_ba233953-3e40-466a-9413-59b2adc6ffbb.jpg?v=1792911432","url":"https:\/\/shop.battlegarage-rs.com\/products\/king-engine-bearings-subaru-fa-fb-size-025-oversized-main-bearing-set","provider":"Battle Garage Racing Service","version":"1.0","type":"link"}