RIVA Yamaha SVHO Supercharger Impellers

The RIVA Supercharger Impellers (part # RY17080-SCI-R3 / RY17080-SCI-R4) are precision-machined billet aluminum supercharger impellers for the Yamaha SVHO engine. The new blade design produces increased boost pressure and air flow, resulting in excellent acceleration and top speed. Choose the R3 or the R4 version below.

Choose Your Version

R3 Impeller (part # RY17080-SCI-R3) — $499.95. The 'R3' impeller delivers increased horsepower and torque throughout the RPM range.

Boost Performance (R3):

• 8 PSI @ 6,000 RPM
• 11 PSI @ 7,000 RPM
• 15.5 PSI @ 8,000 RPM
• 17.5 PSI @ 8,500 RPM
• 20 PSI @ 9,000 RPM
• 22 PSI @ 9,500 RPM

R4 Impeller (part # RY17080-SCI-R4) — $599.95. The 'R4' impeller delivers increased horsepower and torque throughout the RPM range, with higher boost than the R3.

Boost Performance (R4):

• 8.5 PSI @ 6,000 RPM
• 11.75 PSI @ 7,000 RPM
• 16 PSI @ 8,000 RPM
• 19.5 PSI @ 8,500 RPM
• 22 PSI @ 9,000 RPM
• 25 PSI @ 9,500 RPM

Key Features

• Delivers increased horsepower and torque throughout the RPM range
• New blade design produces increased boost pressure and air flow, resulting in excellent acceleration and top speed
• Precision machined from billet aluminum to exact tolerances
• Constructed with 2618 U.S. Forged Aluminum
• Precision machining does not require "old school" post production balancing
• Anodized to prevent corrosion
• Made in North America
• Installs quickly and easily into the stock supercharger housing

What's Included

• Supercharger impeller (R3 or R4, as selected)
• Detailed installation instructions

Fitment

Yamaha SVHO engine. Installs into the stock supercharger housing.

Notes

For use with Stage 3 & Up modifications. Requires use of aftermarket Engine Management System, Upgraded MAP Sensor & Supercharger Shaft Upgrade Kit.

IMPORTANT: Engine Oil Level should be 2/3~3/4 on the dipstick. Be sure to follow warm up procedure outlined in your owner's manual or service manual prior to checking oil level. Data Logging of Air/Fuel-Ratio strongly recommended. Submit your data log at maptuner-support.web.app for review.