{"product_id":"trx450r-crf450x-kpmi-12mm-oversize-head-stud-kit","title":"Kibblewhite Cylinder Head Bolt Stud Nut TRX 450R 450ER 450 ER CRF 450X R RX BPR","description":"\u003cdiv style=\"max-width:800px;margin:0 auto;font-family:Arial,Helvetica,sans-serif;line-height:1.5;color:#222;\"\u003e \u003ch2 style=\"text-align:center;font-size:26px;margin:0 0 12px 0;\"\u003e \u003cstrong\u003e🔥 TRX450R 450ER CRF450X KPMI Oversize Head Stud Kit 12mm MAX CLAMP 🔥\u003c\/strong\u003e \u003c\/h2\u003e \u003ch3 style=\"color:#c00;margin:20px 0 6px;text-align:center;\"\u003e🛠️ Extreme Duty Upgrade: Maximize Clamping Force for High-Performance Builds!\u003c\/h3\u003e \u003cp style=\"text-align:center;\"\u003e\u003cspan style=\"font-size:16px;\"\u003eWhen pushing your Honda TRX450R, TRX450ER, or CRF450 to the limit, reliability starts at the cylinder head. This \u003cstrong\u003eKibblewhite KPMI Oversize Head Stud Kit\u003c\/strong\u003e is the ultimate solution for maximum performance applications where the OEM studs are simply inadequate. These \u003cstrong\u003eBlack Diamond™ studs\u003c\/strong\u003e feature a consistent \u003cstrong\u003e12mm body diameter\u003c\/strong\u003e—upgraded from the stock thin section—providing \u003cstrong\u003emaximum clamping force\u003c\/strong\u003e and unparalleled proof-stress reliability for extreme duty and peace of mind on the track.\u003c\/span\u003e\u003c\/p\u003e \u003ch3 style=\"color:#c00;margin:20px 0 6px;text-align:center;\"\u003e✅ Uncompromising Strength: Aircraft Alloy Steel, Rolled Threads, Made in USA!\u003c\/h3\u003e \u003cp style=\"text-align:center;\"\u003e\u003cspan style=\"font-size:16px;\"\u003eInvest in the highest quality fasteners available. KPMI® Cylinder Studs are made from \u003cstrong\u003e180,000 psi yield strength, fine grain, heat treated, aircraft grade alloy steel\u003c\/strong\u003e. The threads are **\"rolled\" to create the toughest and strongest thread possible**, and the entire body is center-less ground to remove notch sensitivity. The nuts are single point machined from \u003cstrong\u003ehigh tensile strength Aircraft Alloy Steel\u003c\/strong\u003e and heat treated to ensure hard, wear-resistant surfaces while retaining a ductile core to prevent cracking. Both nuts and studs receive a premium \u003cstrong\u003eBlack Oxide treatment\u003c\/strong\u003e for enhanced corrosion resistance, guaranteeing a stud that meets and exceeds high-performance needs!\u003c\/span\u003e\u003c\/p\u003e \u003cul\u003e \u003cli\u003e\u003cspan style=\"font-size:16px;\"\u003eStuds are heat treated \u003cstrong\u003e180,000 psi aircraft alloy steel\u003c\/strong\u003e.\u003c\/span\u003e\u003c\/li\u003e \u003cli\u003e\u003cspan style=\"font-size:16px;\"\u003e\u003cstrong\u003e12mm Oversize Diameters\u003c\/strong\u003e throughout the stud body for maximum clamping force.\u003c\/span\u003e\u003c\/li\u003e \u003cli\u003e\u003cspan style=\"font-size:16px;\"\u003eNuts and studs have \u003cstrong\u003erolled threads\u003c\/strong\u003e for the strongest possible threads.\u003c\/span\u003e\u003c\/li\u003e \u003cli\u003e\u003cspan style=\"font-size:16px;\"\u003eTreated with \u003cstrong\u003eblack oxide\u003c\/strong\u003e for enhanced corrosion resistance.\u003c\/span\u003e\u003c\/li\u003e \u003cli\u003e\u003cspan style=\"font-size:16px;\"\u003eQuantity includes \u003cstrong\u003e4pcs. Studs \/ 4pcs. Nuts \/ 4pcs. Washers\u003c\/strong\u003e.\u003c\/span\u003e\u003c\/li\u003e \u003c\/ul\u003e \u003ch3 style=\"color:#c00;margin:20px 0 6px;text-align:center;\"\u003e📦 IMPORTANT: Installation Requirements \u0026amp; Fitment Details!\u003c\/h3\u003e \u003cp style=\"text-align:center;\"\u003e\u003cspan style=\"font-size:16px;\"\u003eThis \u003cstrong\u003e12mm Oversize Stud Kit\u003c\/strong\u003e is designed for extreme duty and high performance, requiring a **simple drilling operation with a 1\/2” drill bit** to modify the cylinder head for fitment. This modification is necessary to achieve maximum clamping force (the 12mm thread for the case end reduces to a 10mm thread for the nut on standard studs, but the oversize option keeps a consistent 12mm diameter). This kit is precision engineered for a flawless fit on the following models.\u003c\/span\u003e\u003c\/p\u003e \u003cul\u003e \u003cli\u003e\u003cspan style=\"font-size:16px;\"\u003eFits \u003cstrong\u003eHonda® CRF™ 450R (2002-2008)\u003c\/strong\u003e \u0026amp; \u003cstrong\u003eCRF™ 450X (2005-2017)\u003c\/strong\u003e.\u003c\/span\u003e\u003c\/li\u003e \u003cli\u003e\u003cspan style=\"font-size:16px;\"\u003eFits \u003cstrong\u003eHonda® TRX™ 450R\/ER (2006-2014)\u003c\/strong\u003e.\u003c\/span\u003e\u003c\/li\u003e \u003cli\u003e\u003cspan style=\"font-size:16px;\"\u003e\u003cstrong\u003eCylinder Head Modification Required\u003c\/strong\u003e (simple 1\/2\" drill bit operation).\u003c\/span\u003e\u003c\/li\u003e \u003cli\u003e\u003cspan style=\"font-size:16px;\"\u003eReplaces Honda OEM Part #s: \u003cstrong\u003e90031-MEB-670, 90453-KCY-670, 94050-10000\u003c\/strong\u003e.\u003c\/span\u003e\u003c\/li\u003e \u003cli\u003e\u003cspan style=\"font-size:16px;\"\u003eStuds are proudly \u003cstrong\u003eMADE IN USA\u003c\/strong\u003e.\u003c\/span\u003e\u003c\/li\u003e \u003c\/ul\u003e \u003ch3 style=\"color:#c00;margin:20px 0 6px;text-align:center;\"\u003e❓ Frequently Asked Questions (FAQ)\u003c\/h3\u003e \u003cul\u003e \u003cli\u003e\n\u003cspan style=\"font-size:16px;\"\u003e\u003cstrong\u003eQ: Why do I need to modify the cylinder head?\u003c\/strong\u003e\u003c\/span\u003e \u003cp style=\"text-align:left;margin:0 0 10px 0;\"\u003e\u003cspan style=\"font-size:16px;\"\u003eA: The KPMI Black Diamond studs use a consistent 12mm diameter to achieve maximum clamping force, which requires slightly enlarging the stock cylinder head bolt holes with a 1\/2\" drill bit.\u003c\/span\u003e\u003c\/p\u003e\n\u003c\/li\u003e \u003cli\u003e\n\u003cspan style=\"font-size:16px;\"\u003e\u003cstrong\u003eQ: What is the benefit of rolled threads?\u003c\/strong\u003e\u003c\/span\u003e \u003cp style=\"text-align:left;margin:0 0 10px 0;\"\u003e\u003cspan style=\"font-size:16px;\"\u003eA: Rolling the threads, rather than cutting them, creates a much stronger, tougher, and more fatigue-resistant thread, which is essential for high-stress applications.\u003c\/span\u003e\u003c\/p\u003e\n\u003c\/li\u003e \u003cli\u003e\n\u003cspan style=\"font-size:16px;\"\u003e\u003cstrong\u003eQ: Are these compatible with my stock cylinder?\u003c\/strong\u003e\u003c\/span\u003e \u003cp style=\"text-align:left;margin:0 0 10px 0;\"\u003e\u003cspan style=\"font-size:16px;\"\u003eA: Yes, these studs are designed to fit your stock cylinder case, though they require the specified modification to the cylinder head itself.\u003c\/span\u003e\u003c\/p\u003e\n\u003c\/li\u003e \u003cli\u003e\n\u003cspan style=\"font-size:16px;\"\u003e\u003cstrong\u003eQ: What is the material of the stud?\u003c\/strong\u003e\u003c\/span\u003e \u003cp style=\"text-align:left;margin:0 0 10px 0;\"\u003e\u003cspan style=\"font-size:16px;\"\u003eA: The studs are made from 180,000 psi yield strength, fine grain, heat treated, aircraft grade alloy steel.\u003c\/span\u003e\u003c\/p\u003e\n\u003c\/li\u003e \u003c\/ul\u003e \u003ch3 style=\"color:#c00;margin:20px 0 6px;text-align:center;\"\u003e🌟 Why Buy from BPRATV? Your Authority for Honda Performance! 🌟\u003c\/h3\u003e \u003cp style=\"text-align:center;margin:0 20px;\"\u003e\u003cspan style=\"font-size:16px;\"\u003eAt BPRATV, our promise is unwavering: \u003cstrong\u003eThe Best Parts. The Best Performance. The Best Price.\u003c\/strong\u003e This complete KPMI Head Stud Kit is curated to deliver reliability, power, and value in one box—so you can spend less time wrenching and more time riding. Trust BPRATV to deliver the parts you need to keep your Honda TRX450R running at its best, \u003cstrong\u003eevery single time\u003c\/strong\u003e.\u003c\/span\u003e\u003c\/p\u003e \u003cp style=\"text-align:center;margin:0 20px;\"\u003e\u003cspan style=\"font-size:16px;\"\u003e\u003cbr\u003e\u003c\/span\u003e\u003c\/p\u003e \u003cp style=\"text-align:center;margin:0 20px;\"\u003e\u003cspan style=\"color:#38761d;font-size:16px;\"\u003e\u003cstrong\u003e\u003cem\u003eUpgrade to KPMI Black Diamond studs and maximize your engine's potential! 🏁\u003c\/em\u003e\u003c\/strong\u003e\u003c\/span\u003e\u003c\/p\u003e \u003cp style=\"text-align:center;margin:0 20px;\"\u003e\u003cspan style=\"font-size:16px;\"\u003e\u003cbr\u003e\u003c\/span\u003e\u003c\/p\u003e \u003cp style=\"text-align:center;margin:0 20px;\"\u003e\u003cspan style=\"color:#0000ff;font-size:16px;\"\u003e\u003cstrong\u003eBPRATV - The Best Parts. The Best Performance. The Best Price.\u003c\/strong\u003e\u003c\/span\u003e\u003c\/p\u003e \u003cp style=\"text-align:center;margin:0 20px;\"\u003e\u003cspan style=\"color:#0000ff;font-size:16px;\"\u003e\u003cstrong\u003eBRAPPPPPPPPPP!\u003c\/strong\u003e\u003c\/span\u003e\u003c\/p\u003e \u003cp style=\"text-align:center;font-size:10px;color:#555;margin:20px 0 0px;\"\u003e© BPRATV LLC 1-year limited warranty from the manufacturer for material or workmanship defects.* Due to the nature of high performance and racing applications, BPRATV LLC components are sold without express warranty or any implied warranty of merchantability or fitness for a specific purpose. BPRATV LLC shall not, under any circumstances, be liable for any specific, incidental or consequential damages, including, but not limited to, damage, or loss of property or equipment, loss of profits or revenue(s), cost of purchased or replacement goods, or claims of customers of the purpose, which may arise and\/or shall result from sale, installation or use of these parts. Installation of these parts may void vehicle manufacturers warranty coverage and\/or may cause the vehicle to be illegal in some locations. This product is exempt from the emission standards and related requirements of 40 C.F.R. § 1051 as provided by 40 C.F.R. § 1051.620, and California law [e.g., vehicle code§§ 27156 and 38391]. This product is sold only for use in connection with EPA -certified, purpose-built, non-road vehicles used solely for closed course, non-road competition\/racing and not used for any recreational purpose or on public highways or right of ways maintained by and open to the public. This product is sold only in connection with machines that do not fall under state and\/or federal noise or emission standards\/regulations. Purchasers who\/that purchase this product represent and warrant that the product is purchased only in connection with EPA -certified, emission-regulations-exempt and noise-regulations-exempt competition\/racing vehicles as interpreted under applicable state and\/or federal law. \u003c\/p\u003e\n\u003c\/div\u003e","brand":"Kibblewhite Precision","offers":[{"title":"Default Title","offer_id":45436251242693,"sku":"256197249270\/30-33850\/JT","price":108.88,"currency_code":"USD","in_stock":false}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0593\/1083\/3861\/files\/256197249270-6.jpg?v=1764705684","url":"https:\/\/bpratv.com\/products\/trx450r-crf450x-kpmi-12mm-oversize-head-stud-kit","provider":"BPRATV","version":"1.0","type":"link"}