Welcome Aboard!

10% savings across all ranges sitewide for new customers · Terms apply

FLASHSALE26

RAVE Valve Rebuild Kit for Sea-Doo 787/800 Carbureted GSX, GTX, SPX, XP, Challenger & Speedster

Regular price $21.99

Worry-free returns

Shop with confidence. If you’re not completely satisfied, eligible items may be returned within the return window, provided they are unused and in original packaging.


If the return is due to our error or a defective item, we’ll make it right.


Please contact us before returning any item.

Delivery and Shipping

Orders are typically processed within 1–2 business days.


U.S. orders usually arrive within 6–15 days, depending on stock location and destination.


International delivery times may vary due to customs processing.


Tracking information will be provided once your order ships.

If you have any questions, feel free to email us at info@seasierra.com, and we’ll get back to you within 20–36 hours.

Product Details

This aftermarket RAVE valve rebuild kit is intended for Sea-Doo 787/800 cc carbureted applications, including GSX, GTX, SPX, XP, Challenger, and Speedster models. It is designed to service the exhaust RAVE valve assemblies and renew commonly replaced bellows, shaft seals, and housing gaskets.

Use the application and part-number information below to compare your original components before ordering. Model compatibility can vary by engine configuration and model year; confirm that your watercraft uses the carbureted 787/800 engine and the matching RAVE valve assembly.

  • Service kit for Sea-Doo RAVE valve exhaust components
  • For carbureted 787/800 cc two-stroke applications
  • Includes bellows, shaft O-rings, and gaskets for valve service
  • Aftermarket replacement parts; not an OEM component

Part Number References

The following Sea-Doo part numbers are provided as cross-reference information. Compare the component design and dimensions with the parts removed from your engine before installation.

Reference Number Component Reference
290260723 RAVE valve bellow
290260728 RAVE valve bellow
420260728 RAVE valve bellow
420260723 RAVE valve bellow
420-430-110 RAVE valve shaft O-ring
290-430-110 RAVE valve shaft O-ring
290-931-765 RAVE valve shaft O-ring
420-931-540 RAVE valve housing gasket
290-931-540 RAVE valve housing gasket

Engine & Model Compatibility

The kit is associated with the following Sea-Doo 787/800 carbureted applications. Always verify the exact engine configuration, model year, and original valve components before ordering.

Model Family Engine/Application Important Check
GSX 787/800 carbureted Verify engine and RAVE assembly
GTX 787/800 carbureted Verify engine and RAVE assembly
SPX 787/800 carbureted Verify engine and RAVE assembly
XP 787/800 carbureted Not for 720 applications
Challenger 787/800 carbureted Verify engine and RAVE assembly
Speedster 787/800 carbureted Verify engine and RAVE assembly

Technical Specifications

Engine Displacement
787 / 800 cc
Engine Type
Two-stroke, carbureted
Application
RAVE valve exhaust system
Product Type
Aftermarket valve rebuild kit
Fitment Scope
Selected Sea-Doo 787/800 carbureted applications

What's in the Box

  • 2 × RAVE valve bellows
  • 2 × shaft O-rings
  • 2 × valve housing gaskets

Installation Notes

  1. Shut off the fuel supply and disconnect the battery before beginning work.
  2. Locate the RAVE valve assemblies and remove surrounding components as required for access.
  3. Disassemble each valve housing carefully, noting the orientation of the original components.
  4. Remove the used bellows, shaft O-rings, and gaskets. Clean the valve assemblies and mating surfaces thoroughly.
  5. Install the new shaft O-rings without cutting, twisting, or damaging them.
  6. Fit the replacement bellows securely onto the valve assemblies.
  7. Position the new gaskets on the valve housing mating surfaces.
  8. Reassemble the valve housings using the service procedure and torque specifications for the specific watercraft.
  9. Repeat the service procedure for the other RAVE valve where applicable.
  10. Reinstall removed components and reconnect the battery.
  11. Inspect the assemblies for correct seating and check for leaks or abnormal movement before normal operation.

Troubleshooting & FAQ

How do I know if my RAVE valves need rebuilding?

Loss of mid-range performance, rough running, unusual exhaust noise, or visibly damaged, hardened, or leaking bellows can indicate that the RAVE valve components require inspection. Diagnose the complete system before replacing parts.

Will this kit fit both 787 and 800 engines?

It is intended for the listed Sea-Doo 787/800 carbureted applications. Confirm the engine configuration and compare the original RAVE components and reference numbers before ordering.

Does this kit fit 720 XP models?

No. This listing is intended for 787/800 applications and should not be used for a 720 engine unless the exact components have been independently confirmed.

Can I replace only one valve?

Service requirements depend on the condition of each assembly. Inspect both valves and replace worn components as needed, following the service procedure for your specific model.

What tools are required?

Basic hand tools and a torque wrench are generally required. Use the appropriate service manual for access instructions, fastener torque values, and adjustment procedures.

Is this an OEM part?

No. This is an aftermarket replacement kit intended to service compatible Sea-Doo RAVE valve assemblies.

Safety & Important Information

  • Verify the engine type, model application, original component design, and reference numbers before purchase.
  • Do not install this kit on a 720 engine or fuel-injected application without confirming exact compatibility.
  • Follow the manufacturer service procedure and torque specifications for your watercraft.
  • Professional installation is recommended if you are not experienced with two-stroke engine service.

About Sea Sierra

  • Marine replacement parts for maintenance and repair applications.
  • Products selected for compatibility-focused service work.
  • Customer support for product and application questions.

Payment & Security

Payment methods

  • American Express
  • Apple Pay
  • Diners Club
  • Discover
  • Google Pay
  • JCB
  • Maestro
  • Mastercard
  • PayPal
  • Union Pay
  • Visa

Your payment information is processed securely. We do not store credit card details nor have access to your credit card information.