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🔧 Yamaha Banshee 350 OEM Crankcase Set

$500.00

🔧 Yamaha Banshee 350 OEM Crankcase Set – VERY CLEAN! Matching Numbers, No Stripped Threads! 🔧

Up for sale is an exceptionally clean, genuine Yamaha OEM crankcase set for the legendary Banshee 350 (YFZ350).

This is the foundation of any great build. Whether you are resurrecting a blown motor, doing a full ground-up restoration, or just need a pristine spare set to keep on the shelf, these cases are the perfect starting point. They have been carefully removed, thoroughly cleaned, and inspected to ensure they are ready for your next project.

Key Features & Qualities

100% Genuine OEM Yamaha: These are authentic factory castings—not cheap aftermarket replicas or Chinese knock-offs. You are getting the exact same quality and metallurgy that Yamaha engineered for the legendary twin-cylinder two-stroke.
Very Clean Condition: These cases have been degreased and power-washed. They present beautifully with no heavy baked-on grime, no deep corrosion, and no excessive wear from years of mud and abuse. They are builder-ready right out of the box.
Matching Set: This is a complete, matched upper and lower case half set. They belong together and fit perfectly, ensuring proper bearing alignment and seal surfaces.
Untouched & Un-Modified: Here is the BIGGEST selling point—these cases have NOT been hacked, widened, or clearanced for aftermarket 10-mil stroker cranks. The internal webbing is completely intact. They have also NOT been drilled, tapped, or modified for external coolant lines or aftermarket intakes.
Crank Journal & Bearing Surfaces: The bearing pockets are clean, round, and free of spin damage. The crank journal saddles are in excellent shape with no galling or scoring.
All Threads Intact: This is a major issue with used Banshee cases, and we are happy to report that all threads are clean and intact. No helicoils, no stripped case bolts, no broken studs, and no repaired drain plug threads.

Condition & Warranty / Disclaimer

Condition: Used / Very Clean: While these cases are in excellent cosmetic and mechanical condition, they are still used, original parts. They may show minor surface scratches or light casting imperfections from the factory—this is normal and does not affect fitment or performance. We have not media-blasted or painted them, so you can see their honest, unaltered condition.
What You Will Need: Please note that these are bare crankcases. You will need to transfer your internals (crank, bearings, seals, transmission, shift drum, etc.) and install new bearing and seal kits during your build.
Structural Warranty: Due to the nature of used engine components, these cases are being sold “AS-IS” for the serious builder. However, we absolutely guarantee that these cases are 100% crack-free, weld-free, and have NO stripped bolt holes or broken mounting tabs. If you find a hidden crack or structural flaw that we missed, we will offer a full refund within 14 days of your purchase. This warranty does not cover assembly errors, improper installation, or damage caused during your build.

Shipping: These cases will be carefully packed with plenty of bubble wrap and foam to ensure they arrive to your shop door in the same condition they leave ours. We will also include protective inserts in the bearing pockets to prevent shipping damage.

Clean, original Banshee cases are getting harder to find by the day. Don’t settle for welded junk or stripped-out beaters. Secure this very clean OEM set for your build today!