Yamaha YFZ 450 500cc Stroker Big Bore Kit Hot Rods +4mm Crank 98mm Wiseco Piston

  

Yamaha YFZ 450 500cc Stroker Big Bore Kit Hot Rods +4mm Crank 98mm Wiseco Piston. Yamaha YFZ450 500cc Stroker Big Bore Engine Rebuild Kit - includes +4mm Hot Rods/Wiseco crankshaft, 98mm Nikasil cylinder, forged piston, bearings, gaskets & more. 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. 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. 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. Designed for maximum power increase without machining, this kit ensures perfect fitment, reliability, and performance gains you can feel instantly. Does NOT fit YFZ450R or YFZ450X Fuel-Injected Models. Bolt-on installation - no machining required.

Piston compatible with pump or race gas. 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? 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. At BPRATV, our promise is unwavering: The Best Parts. 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. This product is exempt from the emission standards and related requirements of 40 C.

§ 1051 as provided by 40 C. § 1051.620, and California law e. Vehicle code §§27156 and 38391. DO YOU NEED THIS ITEM INSTALLED? NOTICE REGARDING PHOTOS: Product photos used in our listings are for example only to show the high quality of our components. You will receive the correct quantity, size, and fitment of bearings, titanium fasteners, nuts, and bolts for the specific kit listed. BEARING NOTICE: In some cases, you may receive SEALED bearings. If your application requires an OPEN bearing, the seals can easily be removed. EMISSIONS & RACE USE ONLY: This product is exempt from emission standards and requirements of 40 C. Vehicle code §§ 27156 and 38391. BPRATV LLC shall not be liable for specific, incidental, or consequential damages (loss of property, equipment, profits, or revenue) resulting from sale, installation, or use of these parts. This product is NOT DIY; we strongly recommend work be done by a qualified, experienced mechanic. Items installed or prepped (lubricated/sealed) are ineligible. Titanium Fasteners: Failure during use results in replacement only. INTERCHANGEABLE PARTS: We may substitute parts of equal quality from different manufacturers to prevent backorder delays. Prices and listings subject to change without notice.