RIVA/Solas Set-Back Yamaha YF-CD-13/20-SB Impeller

The RIVA/Solas 'Set-Back' is a special series of performance impellers offered exclusively by RIVA and RIVA authorized dealers. Built by Solas, these impellers deliver the ultimate in performance for modified Yamaha watercraft. Inner hub is machined allowing impellers to mount closer to vein housing for reduced cavitation and more top speed. All three blades are digitally calibrated to RIVA's uniform pitch specifications. Impellers are then dynamically spin-balanced at high RPM. A precision factory blueprinting process is performed far exceeding any "prop shop" services available. Includes RIVA Billet Impeller Cone for maximum performance and durability.

For use in craft equipped with a 155mm diameter wear ring.