RIVA YAMAHA SUPERCHARGER SHAFT UPGRADE KITOur Super Duty GEN 4 SHO SVHO Supercharger Shaft Kit provides the ultimate in reliability for high boost applications. Kit features a revolutionary hydraulic shaft stabilization bearing that limits shaft deflection and wear. Bearing stabilizes end of supercharger shaft via high pressure oil film dramatically increasing the stability of the system. Hydraulic end bearing and one piece shaft bearing are fed by a through shaft oiling system providing