{"product_id":"yamaha-yfz450-500cc-4mm-stroker-98mm-big-bore-engine-rebuild-kit-wiseco-hotrods","title":"Yamaha YFZ450 500cc +4mm Stroker 98mm Big Bore Engine Rebuild Kit Wiseco HotRods","description":"\u003cp style=\"text-align: center;\"\u003e\u003cspan style=\"font-size: 0.000001px; color: transparent;\"\u003eYamaha YFZ450 500cc Stroker Big Bore Engine Rebuild Kit – includes +4mm Hot Rods\/Wiseco crankshaft, 98mm Nikasil cylinder, forged piston, bearings, gaskets \u0026amp; more. Bolt-on power from BPRATV!\u003c\/span\u003e\u003c\/p\u003e \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💥 Yamaha YFZ450 500cc Stroker Big Bore Motor Engine Rebuild Kit Complete 💥\u003c\/strong\u003e \u003c\/h2\u003e \u003ch3 style=\"color:#c00;margin:20px 0 6px;text-align:center;\"\u003e🚀 Ultimate 500cc Power Surge: Unleash Maximum Performance \u0026amp; Reliability!\u003c\/h3\u003e \u003cp style=\"text-align:center;\"\u003e\u003cspan style=\"font-size:16px;\"\u003eReady to push your \u003cstrong\u003eYamaha YFZ450\u003c\/strong\u003e beyond limits? The \u003cstrong\u003eYFZ450 500cc Stroker Big Bore Motor Engine Rebuild Kit\u003c\/strong\u003e delivers the perfect combination of displacement and torque, thanks to its \u003cstrong\u003eHot Rods +4mm stroker crankshaft\u003c\/strong\u003e and \u003cstrong\u003e98mm Nikasil big bore cylinder\u003c\/strong\u003e. This complete bolt-on kit transforms your quad into a true powerhouse, delivering explosive acceleration, stronger low-end torque, and unbeatable reliability. Designed specifically for \u003cstrong\u003eYFZ450 carburetor models (2004-2009, 2012-2013)\u003c\/strong\u003e, this comprehensive package ensures precision fitment and performance—no machining required!\u003c\/span\u003e\u003c\/p\u003e \u003ch3 style=\"color:#c00;margin:20px 0 6px;text-align:center;\"\u003e🔥 Key Features \u0026amp; Benefits\u003c\/h3\u003e \u003cp style=\"text-align:center;\"\u003e\u003cspan style=\"font-size:16px;\"\u003eThis meticulously assembled kit features only the highest-quality components for every critical area of your \u003cstrong\u003eYFZ450 engine\u003c\/strong\u003e. Each piece is chosen for its precision, strength, and proven performance under racing and extreme riding conditions.\u003c\/span\u003e\u003c\/p\u003e \u003cul\u003e \u003cli\u003e\u003cspan style=\"font-size:16px;\"\u003e\u003cstrong\u003e+4mm Hot Rods Stroker Crankshaft\u003c\/strong\u003e with connecting rod for a true 500cc powerplant.\u003c\/span\u003e\u003c\/li\u003e \u003cli\u003e\u003cspan style=\"font-size:16px;\"\u003e\u003cstrong\u003e98mm BPRATV Big Bore Nikasil Cylinder\u003c\/strong\u003e with 1-year warranty – precision bored and plated.\u003c\/span\u003e\u003c\/li\u003e \u003cli\u003e\u003cspan style=\"font-size:16px;\"\u003e\u003cstrong\u003eWiseco, Wossner, CP Carrillo, or JE Forged Piston Kit*\u003c\/strong\u003e with rings, wrist pin, and circlips.\u003c\/span\u003e\u003c\/li\u003e \u003cli\u003e\u003cspan style=\"font-size:16px;\"\u003e\u003cstrong\u003eSKF or Hot Rods Bearings\u003c\/strong\u003e – main crank, crank balancer, shift cam, and transmission bearings.\u003c\/span\u003e\u003c\/li\u003e \u003cli\u003e\u003cspan style=\"font-size:16px;\"\u003e\u003cstrong\u003eBPRATV Hi-Flow Water Pump Rebuild Upgrade Kit\u003c\/strong\u003e with new impeller, shaft, and bearing upgrades.\u003c\/span\u003e\u003c\/li\u003e \u003cli\u003e\u003cspan style=\"font-size:16px;\"\u003e\u003cstrong\u003e07+ Aftermarket Oil Pump Assembly\u003c\/strong\u003e with upgraded high-flow nozzle for superior lubrication.\u003c\/span\u003e\u003c\/li\u003e \u003cli\u003e\u003cspan style=\"font-size:16px;\"\u003e\u003cstrong\u003eBPRATV Talon Titanium Cylinder Head Stud Kit\u003c\/strong\u003e and \u003cstrong\u003eBPRATV Talon Camshaft Timing Chain\u003c\/strong\u003e for reliable head clamping and cam timing precision.\u003c\/span\u003e\u003c\/li\u003e \u003cli\u003e\u003cspan style=\"font-size:16px;\"\u003e\u003cstrong\u003eClutch Kit\u003c\/strong\u003e with fiber plates, steel plates, and springs for positive power transfer.\u003c\/span\u003e\u003c\/li\u003e \u003cli\u003e\u003cspan style=\"font-size:16px;\"\u003e\u003cstrong\u003eComplete Gasket \u0026amp; Seal Kit\u003c\/strong\u003e – Cometic 98mm MLS head gasket, Viton valve stem seals, and all top\/bottom end gaskets.\u003c\/span\u003e\u003c\/li\u003e \u003cli\u003e\u003cspan style=\"font-size:16px;\"\u003e\u003cstrong\u003eNGK Spark Plug\u003c\/strong\u003e included – every kit ships brand new and ready to assemble.\u003c\/span\u003e\u003c\/li\u003e \u003c\/ul\u003e \u003ch3 style=\"color:#c00;margin:20px 0 6px;text-align:center;\"\u003e✅ Compatibility\u003c\/h3\u003e \u003cp style=\"text-align:center;\"\u003e\u003cspan style=\"font-size:16px;\"\u003eThis \u003cstrong\u003e500cc +4mm Stroker Big Bore Motor Rebuild Kit\u003c\/strong\u003e is a direct bolt-on upgrade for \u003cstrong\u003eYamaha YFZ450 Carburetor Models (2004–2009, 2012–2013)\u003c\/strong\u003e. Designed for maximum power increase without machining, this kit ensures perfect fitment, reliability, and performance gains you can feel instantly.\u003c\/span\u003e\u003c\/p\u003e \u003cul\u003e \u003cli\u003e\u003cspan style=\"font-size:16px;\"\u003eFits Yamaha YFZ450 Carburetor Models 2004–2009, 2012–2013.\u003c\/span\u003e\u003c\/li\u003e \u003cli\u003e\u003cspan style=\"font-size:16px;\"\u003eDoes NOT fit YFZ450R or YFZ450X Fuel-Injected Models.\u003c\/span\u003e\u003c\/li\u003e \u003cli\u003e\u003cspan style=\"font-size:16px;\"\u003eBolt-on installation – \u003cstrong\u003eno machining required.\u003c\/strong\u003e\u003c\/span\u003e\u003c\/li\u003e \u003cli\u003e\u003cspan style=\"font-size:16px;\"\u003ePiston compatible with pump or race gas.\u003c\/span\u003e\u003c\/li\u003e \u003cli\u003e\u003cspan style=\"font-size:16px;\"\u003eAll parts are brand new and backed by manufacturer warranty.\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: What makes this kit a 500cc stroker build?\u003c\/strong\u003e\u003c\/span\u003e \u003cp style=\"text-align:left;margin:0 0 10px 0;\"\u003e\u003cspan style=\"font-size:16px;\"\u003eA: The combination of a \u003cstrong\u003e98mm big bore cylinder\u003c\/strong\u003e with a \u003cstrong\u003e+4mm stroker crankshaft\u003c\/strong\u003e increases displacement to approximately 500cc, giving you massive torque and horsepower gains.\u003c\/span\u003e\u003c\/p\u003e\n\u003c\/li\u003e \u003cli\u003e\n\u003cspan style=\"font-size:16px;\"\u003e\u003cstrong\u003eQ: Is machining required to install this kit?\u003c\/strong\u003e\u003c\/span\u003e \u003cp style=\"text-align:left;margin:0 0 10px 0;\"\u003e\u003cspan style=\"font-size:16px;\"\u003eA: No. This is a \u003cstrong\u003edirect bolt-on kit\u003c\/strong\u003e designed to fit the specified YFZ450 carburetor models perfectly without modification.\u003c\/span\u003e\u003c\/p\u003e\n\u003c\/li\u003e \u003cli\u003e\n\u003cspan style=\"font-size:16px;\"\u003e\u003cstrong\u003eQ: What kind of performance gains can I expect?\u003c\/strong\u003e\u003c\/span\u003e \u003cp style=\"text-align:left;margin:0 0 10px 0;\"\u003e\u003cspan style=\"font-size:16px;\"\u003eA: Riders typically experience substantial increases in low-end torque, midrange pull, and overall horsepower. It’s the perfect blend of power and reliability.\u003c\/span\u003e\u003c\/p\u003e\n\u003c\/li\u003e \u003cli\u003e\n\u003cspan style=\"font-size:16px;\"\u003e\u003cstrong\u003eQ: What’s included in the complete kit?\u003c\/strong\u003e\u003c\/span\u003e \u003cp style=\"text-align:left;margin:0 0 10px 0;\"\u003e\u003cspan style=\"font-size:16px;\"\u003eA: Everything from top to bottom — cylinder, stroker crankshaft, piston kit, bearings, clutch, gaskets, seals, oil and water pump upgrades, titanium studs, cam chain, and spark plug.\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? Trusted Performance Experts 🌟\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 For years, we’ve been the trusted choice for riders who demand reliable performance and value. Every kit we offer is tested for precision and built for power, ensuring your \u003cstrong\u003eYFZ450\u003c\/strong\u003e runs harder, longer, and faster. Trust BPRATV to keep your \u003cstrong\u003eYFZ450\u003c\/strong\u003e 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 500cc Stroker Power Today – Feel the Torque, Rule the Track! 🏁\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=\"font-size:8px;color:#555;margin-top:20px;text-align:center;\"\u003e © BPRATV LLC\u003cbr\u003e1-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.\u003cbr\u003e\u003cbr\u003eThis 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, nonroad vehicles used solely for closed course, nonroad 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 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.\u003cbr\u003e\u003cbr\u003e \u003c\/p\u003e \u003c\/div\u003e \u003c!-- eBay Listing Titles (79-80 Characters Each): 1. Yamaha YFZ450 500cc Stroker Big Bore Engine Rebuild Kit Wiseco Hot Rods 2. YFZ450 500cc Stroker Motor Rebuild Kit Complete Big Bore Crankshaft BPRATV 3. Yamaha YFZ450 500cc +4mm Stroker Big Bore Engine Kit Hot Rods Wiseco JE 4. YFZ450 500cc Engine Rebuild Kit Stroker Crank +4 Big Bore Cylinder BPRATV 5. Yamaha YFZ450 Carb 500cc Big Bore Stroker Motor Engine Rebuild Kit Complete 6. YFZ450 500cc Hot Rods Stroker Crank Engine Kit with 98mm Nikasil Cylinder 7. Yamaha YFZ450 500cc Complete Big Bore Stroker Rebuild Kit BPRATV Wiseco 8. YFZ450 500cc +4mm Stroker Crank Big Bore Engine Rebuild Kit Wiseco Wossner 9. Yamaha YFZ450 Carburetor 500cc Engine Rebuild Kit Big Bore Stroker Hot Rods 10. YFZ450 500cc Big Bore Stroker Engine Rebuild Kit Complete Bolt-On BPRATV Top 10 eBay SEO Keywords: YFZ450 500cc YFZ450 stroker kit YFZ450 big bore rebuild YFZ450 engine rebuild kit Yamaha YFZ450 stroker crank YFZ450 Hot Rods crankshaft Wiseco YFZ450 piston BPRATV YFZ450 parts YFZ450 performance engine 500cc YFZ450 motor kit Top 10 Search Engine Keywords: Yamaha YFZ450 500cc YFZ450 500cc stroker YFZ450 big bore kit YFZ450 stroker crankshaft YFZ450 engine rebuild Hot Rods YFZ450 crank Wiseco YFZ450 piston kit BPRATV YFZ450 rebuild YFZ450 500cc motor upgrade YFZ450 stroker engine kit Meta Title: Yamaha YFZ450 500cc Stroker Big Bore Engine Rebuild Kit | BPRATV Meta Description: Upgrade your Yamaha YFZ450 to 500cc with BPRATV’s +4mm Stroker Big Bore Motor Rebuild Kit. Includes Hot Rods\/Wiseco crankshaft, forged piston, Nikasil cylinder \u0026 more. Recommended eBay Primary Category: eBay Motors \u003e Parts \u0026 Accessories \u003e ATV, Side-by-Side \u0026 UTV Parts \u003e Engines \u0026 Components \u003e Complete Engines Recommended Secondary Category: eBay Motors \u003e Parts \u0026 Accessories \u003e ATV, Side-by-Side \u0026 UTV Parts \u003e Engine Rebuild Kits Broad Match Keywords: YFZ450 500cc stroker YFZ450 big bore YFZ450 crankshaft Hot Rods YFZ450 Wiseco YFZ450 kit BPRATV YFZ450 500cc YFZ450 engine YFZ450 rebuild kit YFZ450 performance parts YFZ450 stroker crank Yamaha YFZ450 engine YFZ450 500cc rebuild kit --\u003e","brand":"BPRATV","offers":[{"title":"Default Title","offer_id":45219636379845,"sku":"267442680272\/21001\/4173\/M09800\/*118\/2HHD\/JT","price":1348.88,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0593\/1083\/3861\/files\/yfz450-yfz-450-oil-water-pump-complete-98mm-3-big-bore-motor-engine-rebuild-kit-1_2a25f9de-8231-44ca-9c3e-8d63f7edc14a.png?v=1760937004","url":"https:\/\/bpratv.com\/products\/yamaha-yfz450-500cc-4mm-stroker-98mm-big-bore-engine-rebuild-kit-wiseco-hotrods","provider":"BPRATV","version":"1.0","type":"link"}