Description

Built to perform. Tested to last. Backed by experience.

If your 2021–2025 Yamaha FX SVHO 1800 WaveRunner needs a new heart, this Build Core Engine delivers trusted power and proven durability. Each engine goes through extensive machining, precision assembly, and rigorous testing to ensure it meets or exceeds factory standards. Our process combines new and expertly refurbished components with skilled craftsmanship so you can ride with complete confidence.

Engine Rebuild Features

• Standard No-Fault 1-year warranty with an optional 2-year No-Fault Warranty upgrade.
• We restore and reuse as many OEM parts as possible. We inspect and refurbish all OEM parts to guarantee high quality internals that keep your machine running reliably.
• All components are cleaned, dismantled, inspected and repaired as needed.
• Cylinder head inspected, cleaned, sandblasted, decked, rebuilt to manufacturer spec and undergoes a quality inspection.
• Valve guides inspected and replaced as needed.
• Valves and valve seats are recut/refaced to ensure tight seal, verified with vacuum test.
• Camshafts lobes and journals cleaned and polished, replaced as needed.
• Refurbished crankshaft.
• Cylinder block is inspected for damage. If the bore is worn or damaged, requiring replating or sleeving, there will be additional fees incurred.
• Pistons replaced with a new pistons and rings.
• Timing chain inspected for stretch and wear, replaced as needed.
• Fully inspected engine cases, tested for cracks, holes, or excessive wear.
• All gaskets and seals replaced.
• Engine assembled and torqued to manufacturer specifications.

Once your engine passes our quality control inspection, we will ship your new Rev6 rebuilt engine back to you!

Note: This is a generalized list and may include more or less, depending on the needs for your specific model or core.

Model Compatibility

This Build Core fits the Yamaha FX SVHO 1800 WaveRunner (2021–2025).

Warranty Backing You Can Trust

• 1-Year Warranty included on every engine.
• Optional 2-Year No-Fault Warranty Upgrade ($450) – If something happens, we replace it. No questions asked.

Learn more about our warranty coverage and why riders nationwide choose REV6 for peace of mind.

Our Process, Your Confidence

Every engine is built under a strict quality control system. One master technician handles the assembly, and a second expert inspects it before shipment. With over 50 years of combined powersports knowledge, we deliver engines designed with performance and dependability in mind.

Core Requirement – What You Need to Know

This product is sold as a Build Core Engine, not a ready-to-install unit. A complete, rebuildable core is required as the foundation for remanufacturing. Engines go through full disassembly, machining, and reassembly with new and refurbished components.

For details on shipping and acceptable cores, visit our Help Center. If you’re unsure about your core’s condition, reach out to our team before purchasing.

Take Action

Don’t gamble on stock replacements. Choose a proven rebuild with nationwide shipping and warranty protection. Review our FAQ for common questions or check our Engine Rebuild Kit Guide for other solutions. When ready, send in your core and let REV6 put you back on the water with confidence.