Yamaha YFZ450 500cc Stroker Motor Engine Rebuild Kit 98mm Cylinder BPRATV Wiseco

💥 Yamaha YFZ450 500cc Stroker Big Bore Motor Engine Rebuild Kit Complete 💥

🚀 Ultimate 500cc Power Surge: Unleash Maximum Performance & Reliability!

Ready to push your Yamaha YFZ450 beyond limits? The YFZ450 500cc Stroker Big Bore Motor Engine Rebuild Kit delivers the perfect combination of displacement and torque, thanks to its Hot Rods +4mm stroker crankshaft and 98mm Nikasil big bore cylinder. 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 YFZ450 carburetor models (2004-2009, 2012-2013), this comprehensive package ensures precision fitment and performance—no machining required!

🔥 Key Features & Benefits

This meticulously assembled kit features only the highest-quality components for every critical area of your YFZ450 engine. Each piece is chosen for its precision, strength, and proven performance under racing and extreme riding conditions.

• +4mm Hot Rods Stroker Crankshaft with connecting rod for a true 500cc powerplant.
• 98mm BPRATV Big Bore Nikasil Cylinder with 1-year warranty – precision bored and plated.
• Wiseco, Wossner, CP Carrillo, or JE Forged Piston Kit* with rings, wrist pin, and circlips.
• SKF or Hot Rods Bearings – main crank, crank balancer, shift cam, and transmission bearings.
• BPRATV Hi-Flow Water Pump Rebuild Upgrade Kit with new impeller, shaft, and bearing upgrades.
• 07+ Aftermarket Oil Pump Assembly with upgraded high-flow nozzle for superior lubrication.
• BPRATV Talon Titanium Cylinder Head Stud Kit and BPRATV Talon Camshaft Timing Chain for reliable head clamping and cam timing precision.
• Clutch Kit with fiber plates, steel plates, and springs for positive power transfer.
• Complete Gasket & Seal Kit – Cometic 98mm MLS head gasket, Viton valve stem seals, and all top/bottom end gaskets.
• NGK Spark Plug included – every kit ships brand new and ready to assemble.

✅ Compatibility

This 500cc +4mm Stroker Big Bore Motor Rebuild Kit is a direct bolt-on upgrade for Yamaha YFZ450 Carburetor Models (2004–2009, 2012–2013). Designed for maximum power increase without machining, this kit ensures perfect fitment, reliability, and performance gains you can feel instantly.

• Fits Yamaha YFZ450 Carburetor Models 2004–2009, 2012–2013.
• Does NOT fit YFZ450R or YFZ450X Fuel-Injected Models.
• Bolt-on installation – no machining required.
• Piston compatible with pump or race gas.
• All parts are brand new and backed by manufacturer warranty.

❓ Frequently Asked Questions (FAQ)

• Q: What makes this kit a 500cc stroker build?

  A: The combination of a 98mm big bore cylinder with a +4mm stroker crankshaft increases displacement to approximately 500cc, giving you massive torque and horsepower gains.

• Q: Is machining required to install this kit?

  A: No. This is a direct bolt-on kit designed to fit the specified YFZ450 carburetor models perfectly without modification.

• Q: What kind of performance gains can I expect?

  A: Riders typically experience substantial increases in low-end torque, midrange pull, and overall horsepower. It’s the perfect blend of power and reliability.

• Q: What’s included in the complete kit?

  A: 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.

🌟 Why Buy from BPRATV? Trusted Performance Experts 🌟

At BPRATV, our promise is unwavering: The Best Parts. The Best Performance. The Best Price. 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 YFZ450 runs harder, longer, and faster. Trust BPRATV to keep your YFZ450 running at its best, every single time.

Upgrade to 500cc Stroker Power Today – Feel the Torque, Rule the Track! 🏁

BPRATV - The Best Parts. The Best Performance. The Best Price.

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© 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, 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.