Description

Yamaha Banshee 350 Engine Rebuild Service

If your Banshee has lost its snap—or worse, gone quiet—it’s time for a proper rebuild. These engines are built to scream, and when they don’t, something’s worn out. A full REV6 rebuild brings it back the right way.

We tear your engine down completely, inspect every component, and rebuild it with corrected clearances and refreshed internals. As a result, your Banshee hits harder, revs cleaner, and responds the way it should.

Core Build Process

• Place your order and receive shipping instructions and labels
• Remove exhaust, electrical, and fuel-related components
• Package your engine core—we handle pickup and return shipping
• Full teardown, inspection, machining, and rebuild
• Final quality control check before shipping
• Engine returned ready for install

Typical turnaround time is about 2 weeks, depending on core condition.

What Gets Rebuilt

• Complete engine cleaning and blasting
• Fully refurbished crankshaft assembly
• Cylinder head inspected and decked
• Cylinders machined or replated to spec
• New dual pistons, rings, wrist pins, bearings, and circlips
• Complete transmission gearbox inspection and rebuild
• Bottom-end bearings inspected and refreshed
• Oil pump assembly inspected and rebuilt (if applicable)
• Engine cases inspected for cracks, wear, and damage

Note: Final build details may vary depending on the condition of your core and setup.

Built for Power

Once everything is dialed in, the engine revs cleaner and delivers sharper throttle response. In addition, proper sealing improves consistency across the powerband. Because of that, your Banshee feels alive again every time you hit the throttle.

Warranty & Support

Every engine includes a 1-year warranty. In addition, you can upgrade to a 2-year no-fault plan for full coverage.

Review details on our warranty policy, check answers in our FAQ, or contact our team for help before ordering.

For shipping steps and teardown guidance, visit our Help Center.

Performance Options Available

Looking to push it further? We offer performance upgrades and stroker builds. Call our team to talk through your setup and goals.

Looking for Parts Instead?

If you’re rebuilding on your own, you can find top and bottom end kits, cylinders, pistons, crankshafts, gaskets, seals, and more in our
Yamaha Banshee 350 parts catalog.

Take Action

If your Banshee isn’t hitting like it used to, now’s the time to bring it back the right way.

Get back on the trail and hear it scream again.

We proudly support veterans and active servicemembers with available discounts—thank you for your service.