Wiseco WB1149 Bottom End Gasket Kit for Polaris 550cc Fuji Engine

The Wiseco WB1149 is a complete bottom end gasket and rebuild kit designed specifically for Polaris 550cc Fuji-engine applications. Each kit contains everything required to complete a bottom end rebuild correctly the first time, including all applicable bearings and a full bottom end gasket kit manufactured to meet or exceed OEM standards.

Key Features:

• Complete Rebuild Solution: Includes crankshaft and connecting rod, all applicable bearings, and a comprehensive bottom end gasket kit — everything needed for a full bottom end rebuild in one package
• Double-Forged Connecting Rod: Manufactured from a dedicated forging process with shot peening, oil slots, and coated bronze thrust washers for superior strength and durability
• Bushed Top-End Rod Pin: Upper rod bore is bushed for optimal oil retention, eliminating pin galling and extending component life
• Case-Hardened Rod Bores: Bottom end rod bores are case hardened to 58–62 RC, providing an optimized bearing running surface for long-term reliability
• Premium Crank Pin Bearings: Manufactured from high-quality, hot-rolled steel and case hardened to 58–62 RC to maximize assembly lifespan
• Caged Needle Roller Bearings: Designed to deliver the highest possible RPM capacity and smooth operation
• Main Bearings: Produced to the highest quality standards, case hardened for maximum service life and consistent performance at high RPMs
• Corrosion-Resistant Surface Treatment: Applied to prevent corrosion and pitting during long-term use or storage, enhancing overall assembly strength and longevity
• Premium Gasket Materials: Bottom end gaskets exceed OEM standards to ensure exceptional sealing across all critical mating surfaces

The Wiseco WB1149 bottom end kit delivers OEM-surpassing quality and precision engineering, making it the trusted choice for powersports technicians and enthusiasts performing a full bottom end rebuild on Polaris 550cc Fuji-powered machines.