Riva Yamaha 1.8L 1.9L Pro-Series Waterbox HO SHO SVHO

Description

Riva Yamaha 1.8L 1.9L Pro-Series Waterbox HO SHO SVHO.

Developed on Riva’s in-house Dyno and tested extensively on the water, this waterbox features radiused exhaust tubes and end caps for optimum exhaust flow. Unique exhaust baffle will increase the low-end power and mid-range pull of your Yamaha watercraft. Delivers up to 15hp on modified engines along with significant torque gains. High-strength aluminum construction will survive backfires and meltdowns. Powder coated to prevent corrosion. A must for modified motors.

Key Features:

• Delivers up to 15hp on modified craft! 
• Machined hose flanges for reliable coupler retention. 
• Radiused exhaust tubes & end caps. 
• Powder coated to prevent corrosion.