Description
The RIVA Intake Manifold Upgrade Kit enables Yamaha 1.8 Liter naturally aspirated engines to produce more horsepower by increasing air flow. This precision-tapered billet sleeve directly replaces the restrictive mesh element inside the intake manifold, providing noticeable low-end punch and mid-range pull. Installation is quick and easy, with RIVA testing confirming that the stock ECU will compensate for the increased air flow.
Note: Requires Coast Guard approved aftermarket filter kit to comply with flame arrestor requirements. Designed for closed course competition use only. Use on public lands and/or waterways in California is illegal.
Fits various Yamaha models including FX, VX, GP, and FZ series from 2008 to 2025. See compatibility for full fitment details.
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