YFZ450 YFZ 450 OEM Crank Big Bore Cylinder Kit Complete Motor Rebuild 98mm 478cc. YFZ450 YFZ 450 OEM Crank Big Bore Cylinder Kit Complete Motor Rebuild 98mm 478cc?? Upgrade your Yamaha YFZ450 carbureted model with this comprehensive 478cc big bore engine rebuild kit. Featuring a 98mm BPRATV Nikasil-plated cylinder and a genuine OEM Yamaha crankshaft, this kit delivers enhanced performance and reliability. Genuine Yamaha OEM Crankshaft Assembly - Made in Japan.
Wiseco or CP-Carrillo 98mm 12.75:1 Forged Piston Kit - Includes high-temp rings, chrome wristpin, and circlips. SKF or Hot Rods Heavy-Duty Main Crank Bearings. Water Pump Rebuild Kit - Includes bearing and mechanical seal. Complete Gasket Kit - With Cometic Big Bore MLS Head Gasket. Complete Engine Oil Seal Kit.
What It Means for You. Increases displacement to 478cc for enhanced power.Ensures factory-level reliability and performance. Provides durability and compatibility with pump or race gas. Includes all necessary components for a complete engine rebuild. Is this kit compatible with fuel-injected YFZ450 models?
Does the piston require race gas? - The 12.75:1 compression piston is compatible with high-octane pump gas; race gas is optional for maximum performance.
Are any modifications required for installation? - No, this is a bolt-on kit with no case or head modifications needed. BPRATV - The Best Parts. Enhance your YFZ450's performance with this complete 478cc big bore rebuild kit! DO YOU NEED TO HAVE THIS ITEM INSTALLED ON YOUR VEHICLE? We are BPRATV, offering you the best in parts and service for over 20 years. PRICES AND LISTINGS ARE SUBJECT TO CHANGE AT ANY TIME WITHOUT NOTICE. Interchangeable part: We stock the same parts from different manufacturers so that when back orders occur, we have a part that is equal in quality and cost to send, preventing what can sometimes be long waits. This would be the only reason your order might vary slightly from the description, and the part that is subbed will always be comparable quality. If you only want a specific brand, just ask and we will let you know if it is out of stock and for how long.Once a part has been installed or prepped for installation it is no longer eligible for return. Over 99% of people in the world are not qualified to build an engine, and it is the responsibility of the person assembling and tuning the engine to make sure all the parts are correct and work properly. We ALWAYS STRONGLY recommend work be done by a qualified, experienced mechanic. Please work with us and we will ALWAYS work with you. No other parts nor any labor are included.
We are BPRATV, and we offer a huge selection of Titanium fasteners. Once an item has been used or prepped for use with lubricants, sealant, etc. It is not eligible for return.