R4 compressor propeller for SVHO (14+)

R4 model compressor propeller, from Riva Racing for Yamaha SVHO jet ski

Reference: RY17080-SCI-R4

The next-generation “R4” supercharger turbine for the Yamaha SVHO engine delivers incredible power and torque throughout the entire rev range. The all-new blade design produces increased boost pressure and airflow, resulting in excellent acceleration and top speed.

Precision machined from aluminum machined to exact tolerances and anodized to prevent corrosion. Installs quickly and easily into the original compressor housing. Includes detailed installation instructions.

Main characteristics:
More acceleration and top speed
Constructed with 2618 US forged aluminum
Precision machining does not require “old-fashioned” post-production balancing
Anodized to prevent corrosion
Made in North America
NOTE: For use with modifications level 3 and above. Requires use of aftermarket engine management system and compressor shaft upgrade kit.

Boost performance:
8.5 psi at 6,000 rpm
11.75 psi at 7,000 rpm
16 psi at 8,000 rpm
19.5 psi at 8,500 rpm
22 psi at 9,000 rpm
25 psi at 9,500 rpm