RIVA Yamaha 2018+ SVHO Intake Manifold Upgrade Kit

The Riva Yamaha Intake Manifold Upgrade Kit enables your Yamaha SVHO engine to produce more horsepower by delivering increased air flow and boost pressure (+1lb). Precision machined billet sleeve directly replaces restrictive mesh element that is prone to becoming dislodged in OEM plastic intake manifold. Provides improved low-end punch and mid-range pull with improved reliability. Includes detailed installation instructions.

Key Features:
• Delivers more boost pressure & horsepower.
• Improves reliability by removing OEM mesh that is prone to failure.
• Billet aluminum sleeve features an o-ring design for a positive seal.
• Includes hole saw & cutting fixture for clean installation.

Fits The Following Models:

• 2018 Yamaha FX Cruiser SVHO Intake Manifold Upgrade Kit
• 2018 Yamaha FX Limited SVHO Intake Manifold Upgrade Kit
• 2018 Yamaha FX SVHO Intake Manifold Upgrade Kit
• 2018 Yamaha GP1800 Intake Manifold Upgrade Kit
• 2019 Yamaha FX Cruiser SVHO Intake Manifold Upgrade Kit
• 2019 Yamaha FX Limited SVHO Intake Manifold Upgrade Kit
• 2019 Yamaha FX SVHO Intake Manifold Upgrade Kit
• 2019 Yamaha GP1800R Intake Manifold Upgrade Kit
• 2020 Yamaha FX Cruiser SVHO Intake Manifold Upgrade Kit
• 2020 Yamaha FX Limited SVHO Intake Manifold Upgrade Kit
• 2020 Yamaha FX SVHO Intake Manifold Upgrade Kit
• 2020 Yamaha GP1800R SVHO Intake Manifold Upgrade Kit
• 2021 Yamaha FX Cruiser SVHO Intake Manifold Upgrade Kit
• 2021 Yamaha FX Limited SVHO Intake Manifold Upgrade Kit
• 2021 Yamaha FX SVHO Intake Manifold Upgrade Kit
• 2021 Yamaha GP1800R SVHO Intake Manifold Upgrade Kit
• 2022 Yamaha FX Cruiser SVHO Intake Manifold Upgrade Kit
• 2022 Yamaha FX Limited SVHO Intake Manifold Upgrade Kit
• 2022 Yamaha FX SVHO Intake Manifold Upgrade Kit
• 2022 Yamaha GP1800R SVHO Intake Manifold Upgrade Kit
• 2023 Yamaha FX Cruiser SVHO Intake Manifold Upgrade Kit
• 2023 Yamaha FX Limited SVHO Intake Manifold Upgrade Kit
• 2023 Yamaha FX SVHO Intake Manifold Upgrade Kit
• 2023 Yamaha GP1800R SVHO Intake Manifold Upgrade Kit
• 2024 Yamaha FX Cruiser SVHO Intake Manifold Upgrade Kit
• 2024 Yamaha FX Limited SVHO Intake Manifold Upgrade Kit
• 2024 Yamaha FX SVHO Intake Manifold Upgrade Kit
• 2024 Yamaha GP SVHO (1.8L) Intake Manifold Upgrade Kit

NOTE: Our testing has determined the stock ECU will compensate for the increased boost provided by our Intake Manifold Upgrade Kit.

NOTE: This item is not included in our "Free Shipping" offer.

Ships via UPS or USPS Priority.  All "Open Box" items are excluded from our free shipping offer and are not returnable.

International Customers: Shipping charges reflect transportation costs only and do not include international brokerage fees, duties, GST/HST/PST, or other applicable taxes. Customers outside the United States may receive a separate invoice directly from the carrier for these additional charges.

If your order arrives damaged or appears defective, please submit a claim through our Customer Service Order Damage Form. Our team will review your submission and contact you within 24 hours (excluding weekends and holidays). All damage/defect claims must be reported within 48 hours of delivery.

An RMA# (Return Merchandise Authorization Number) is required for all returns.

Returns must be initiated through your Customer Account Portal within 10 days of delivery.

Returned items must be:

• Unused
• Uninstalled
• Unmodified
• Complete with all original packaging, hardware, manuals, and accessories

Returns not related to damage, defect, or an Atlantic Jet Sports shipping error are subject to a 20% restocking fee. Customers are responsible for return shipping costs.

Unauthorized returns will be refused at our shipping dock.

[View Full Return Policy & Return Instructions]

Non‑Returnable Items

The following items are final sale and not eligible for return, exchange, or store credit:

• Seat Covers
• Mat Kits, Mat Sheets
• Chin Pads
• Waterboxes
• Aqua Cart & Factory Zero Transportation/Beach Dollies, Totes, Display Carts, and all related Parts/Accessories
• Watercraft Stands
• Aqua Performance Watercraft Steps
• RRP Handlepoles
• Special Order Items
• Close‑Out Items

Electrical Components (non‑returnable):
Starter Motors, Regulators, Relays, CDI Units, Ignition Coils, Stator Coils, Stator Assemblies, Fuel Injectors.

All warranties are those of the manufacturer and not Atlantic Jet Sports. We will be happy to assist you in filing a warranty claim with the manufacturer, but please remember that the manufacturer determines whether a claim is approved or denied. Any modification to a product voids your warranty. All claims for consequential, physical, incidental, or special damage are hereby excluded.

Performance Product Use & Compliance Notice

Atlantic Jet Sports supplies high‑performance components engineered solely for closed‑course racing and sanctioned competition. These parts are not designed, tested, certified, or warranted for use on public waterways or on watercraft equipped with emissions‑controlled systems.

Installing or using these components may change the watercraft’s safety characteristics, emissions compliance, or legal classification. Using competition‑only products on public waterways may violate federal, state, or local regulations.

By purchasing, installing, or operating a watercraft equipped with these components, the user acknowledges and accepts full responsibility for all associated risks—including, but not limited to, personal injury, property damage, mechanical failure, or legal consequences. The user further agrees that Atlantic Jet Sports assumes no liability for damages arising from improper installation, misuse, or operation outside of competition environments.

For best performance and safety, Atlantic Jet Sports strongly recommends installation by a qualified technician experienced with high‑performance Personal Watercraft systems.

Product Installation Disclaimer

⚠️ Warning — Professional Installation Required

• Ensure the hull is fully ventilated and free of fuel vapors before using electric or battery‑powered tools. Failure to do so may result in fire, explosion, serious injury, or death.
• Disconnect the battery before performing any installation or maintenance to prevent accidental ignition, electrical shock, or unintended engine engagement.
• Allow the engine, exhaust, and surrounding components to cool completely before beginning work.
• No smoking, open flames, or spark‑producing devices should be present during installation.

This product is not intended for use on watercraft equipped with pollution‑control systems. Modifying or removing emissions‑related components may violate state or local laws and may render the watercraft illegal for use outside of competition.