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WORX Highly recommends cooling upgrade (WR04011) for modified skis operating above 8300rpm
clean exhaust note without going over the top
8 Waverunners but not required on plastic manifold models
For skis upgraded from 60HP to 90HP
Riva Yamaha Supercharger Shaft Upgrade Kit 2019 seadoo WORX Highly recommends cooling upgradeRiv'as 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 superior
