Part No RY17040-UK-6S5: Riva Heavy-duty Supercharger Shaft Upgrade Kit delivers increased strength & reliability to your Yamaha Supercharger System. Upgraded shaft & bearings directly replace OEM parts for maximum durability in performance applications. Manufactured exclusively for RIVA by HKS, these components feature superior materials & finishing treatments for reduced friction and abrasion resistance. Key benefits include: Reduced friction between moving parts, increased fatigue strength in parts, higher resistance to surface abrasion and improved seize resistance. Kit includes supercharger shaft, 2 bearings, shaft nut and complete installation instructions. It is available from Hot Products USA and Riva Racing dealership.
