Wiseco WB1072 Bottom End Gasket Kit Yamaha YZ250 1995-1997

The Wiseco WB1072 is a complete bottom end gasket kit engineered for the 1995–1997 Yamaha YZ250. Manufactured to meet or exceed OEM specifications, this kit supplies all the gaskets and seals needed for a thorough bottom end rebuild—consolidated under a single part number for convenience.

Key Features:

• OEM+ Quality Gaskets: Premium materials sourced from leading gasket suppliers, inspected for quality and accuracy to deliver an exceptional seal at all critical mating surfaces
• Complete Seal Set: All gaskets and seals specified for the bottom end are included in one kit, eliminating the need to source individual components
• Corrosion-Resistant Treatment: Surface treatment protects against corrosion and pitting during long-term use or storage, extending the life and strength of the assembly
• Caged Needle Roller Bearings: Designed to support the highest possible RPM operation
• Case-Hardened Main Bearings: Manufactured to exacting quality standards and case hardened for maximum service life and smooth high-RPM performance
• Rod Bottom End Bores: Case hardened to 58–62 RC to optimize the bearing running surface
• Crank Pin Bearings: Produced from high-quality, hot-rolled steel case hardened to 58–62 RC for extended assembly longevity
• Top End Rod Bushing: Bushed for oil retention, eliminating pin galling for reliable long-term operation

Wiseco bottom end gasket kits are trusted by professional mechanics and serious enthusiasts who demand reliable, race-ready rebuilds. This kit ensures every critical seal is replaced with a component that meets or surpasses the original factory specification.