Wiseco WB1099 Bottom End Gasket Kit for Polaris 500cc Engines

The Wiseco WB1099 is a complete bottom end rebuild kit designed for Polaris 500cc engines. This all-in-one kit includes everything needed to complete a proper bottom end rebuild, including the crankshaft and connecting rod, all applicable bearings, and a full bottom end gasket kit — engineered to meet or exceed OEM specifications.

Key Features:

• Double-forged connecting rod manufactured from a dedicated forging with shot peening, oil slots, and coated bronze thrust washers for durability and smooth operation
• Premium bottom end gasket kit constructed from high-quality materials exceeding OEM standards, ensuring an exceptional seal at all critical mating surfaces
• Case-hardened main bearings manufactured to the highest quality standards for maximum service life and smooth operation at high RPMs
• Corrosion-resistant surface treatment protects against corrosion and pitting during long-term use or storage, extending the life and strength of the entire assembly
• Bushed top end rod designed for optimal oil retention, eliminating pin galling; bottom end rod bores are case hardened to 58–62 RC for an optimized bearing running surface
• High-quality crank pin bearings forged from hot-rolled steel and case hardened to 58–62 RC for extended assembly lifespan
• Caged needle roller bearings engineered to support the highest possible RPM capability

Wiseco's WB1099 bottom end kit delivers OEM-beating quality in a single, comprehensive package — making it the smart choice for a reliable, long-lasting Polaris 500cc engine rebuild.