RAVE Valve Rebuild Kit – Fits SeaDoo 787 800 Carbureted GSX GTX SPX XP (Replaces 290260723, 290260728, 420260728, 420260723)

Product Details

This RAVE Valve Rebuild Kit fits SeaDoo 787 800 carbureted engines, including GSX, GTX, SPX, and XP models from 1995–1999. The kit includes all essential components to restore your exhaust RAVE valve system, ensuring proper power delivery and engine performance across compatible twin-cylinder applications.

This aftermarket kit directly replaces OEM part numbers 290260723, 290260728, 420260728, and 420260723.

• Complete rebuild solution for both RAVE valves
• Designed for carbureted 787/800 two-stroke engines
• Includes bellows, O-rings, and gaskets for full service

Part Number Matrix

Use this matrix to confirm equivalent references across OEM and aftermarket.

Engine & Model Compatibility

Confirm your engine model/year in the table below.

Technical Specs

Engine Displacement

787 / 800 cc

Engine Type

Two-stroke carbureted

Application

RAVE valve exhaust system

Kit Type

Complete rebuild/repair (twin pack)

Fitment

SeaDoo 787/800 carbureted models

What's in the Box

• 2 × RAVE Valve Bellows
• 2 × Shaft O-Rings
• 2 × Gaskets

Installation Notes

1. Shut off fuel and disconnect the battery before beginning work.
2. Remove the exhaust cover and locate both RAVE valve assemblies on the engine.
3. Carefully disassemble each valve housing, noting the orientation of components.
4. Remove old bellows, O-rings, and gaskets; clean all mating surfaces thoroughly.
5. Install new shaft O-rings onto each RAVE valve shaft.
6. Fit new bellows onto the valve assembly, ensuring proper seating.
7. Place new gaskets on the valve housing mating surfaces.
8. Reassemble the valve housing, torquing fasteners to factory specification.
9. Repeat the process for the second RAVE valve.
10. Reinstall the exhaust cover and reconnect all components.
11. Reconnect the battery and perform a visual inspection for leaks.
12. Test the engine at idle and low speed before returning to normal operation.

Troubleshooting & FAQ

How do I know if my RAVE valves need rebuilding?

Common symptoms include loss of mid-range power, rough idle, excessive smoke, or unusual exhaust noise. Torn bellows or hardened O-rings are typical failure points after several seasons of use.

Will this kit fit both 787 and 800 engines?

Yes, this kit is compatible with all SeaDoo 787 and 800 cc carbureted engines from the model years listed. Ensure your engine is carbureted, not fuel-injected.

Does this kit work on 720 XP models?

No, this kit is designed exclusively for 787/800 engines. The 720 XP uses different RAVE valve components and is not compatible.

Can I replace just one side, or must I do both?

While you can replace one valve, it is strongly recommended to rebuild both RAVE valves simultaneously to maintain balanced performance and avoid repeat maintenance.

What tools are required for installation?

Basic hand tools including socket wrenches, screwdrivers, and a torque wrench are needed. A service manual for your specific model will provide torque specifications and detailed diagrams.

How often should RAVE valves be serviced?

Inspect RAVE valves every 50–100 hours of operation or annually. Replace bellows and seals at the first sign of wear to prevent carbon buildup and maintain optimal exhaust timing.

OEM vs. Aftermarket?

This listing is an aftermarket replacement (not OEM). Built to OEM-level specifications with comparable materials. Manufactured in an ISO 9002 facility, batch-inspected for consistency.

Shipping speed & cost

We ship worldwide quickly—typical transit 5–15 days. Standard shipping is free; expedited options appear at checkout where available.

Warranty & returns

Covered by a 1-year warranty against manufacturing defects under normal use. If issues arise, contact support with your order details. Returns are accepted within our standard window (unused & in original condition). See our policy page or reach out for instructions.

Safety & Important Info

• Verify images/specifications against your original part. If anything differs—even if your model appears compatible—do not purchase.
• This is an aftermarket replacement, not an OEM component.
• Professional installation is recommended for safety and performance.

About Sea Sierra

• Pro-Grade Standards — We supply marine parts engineered to OEM-level tolerances and tested for real-world conditions.
• Fast Global Fulfillment — Free standard delivery to most regions in 5–15 days.
• Manufacturer-Direct Value — Fair pricing without compromising on materials or QC.