Features:

• Enables Yamaha 1.8 Liter naturally aspirated engine to produce more horsepower by delivering increased air flow
• Precision tapered billet sleeve directly replaces restrictive mesh element in intake manifold
• Provides low end punch and mid range pull
• Quick and easy installation
• Riva testing has determined the stock ECU will compensate for increased air flow
• REQUIRES Coast Guard approved aftermarket filter kit to meet flame arrestor requirements
• These items are designed exclusively for closed course competition use ONLY. Use on public lands and/or waterways in the state of California is illegal