Wiseco WB1112 Bottom End Gasket Kit Polaris 400/440cc Fuji Engine

The Wiseco WB1112 is a complete bottom end gasket kit designed for Polaris 400/440cc Fuji-engine applications. Engineered to meet or exceed OEM standards, this kit provides everything needed to properly seal critical mating surfaces during a bottom end rebuild — delivering lasting, leak-free performance.

Key Features:

• Premium gasket materials exceeding OEM specifications for exceptional sealing between all critical mating surfaces
• Corrosion-resistant surface treatment protects against corrosion and pitting during long-term use or storage, extending assembly life and strength
• Main bearings manufactured to the highest quality standards, case hardened for maximum service life and smooth operation at high RPMs
• Crank pin bearings produced from premium hot-rolled steel, case hardened to 58–62 RC for extended assembly longevity
• Caged needle roller bearings engineered to deliver the highest possible RPM capability
• Double-forged connecting rod (where included) features shot peening, oil slots, and coated bronze thrust washers for superior durability
• Bushed top end rod for improved oil retention and elimination of pin galling
• Bottom end rod bores case hardened to 58–62 RC for an optimized bearing running surface

Wiseco has been a trusted name in performance engine components for decades, and the WB1112 bottom end gasket kit upholds that reputation with precision-engineered parts built for demanding powersports applications. Whether you're performing a routine rebuild or restoring performance, this kit ensures your Polaris Fuji-powered machine is back on the trail with confidence.