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YAMAHA BANSHEE NEW OEM CRANKCASE

YAMAHA BANSHEE NEW OEM CRANKCASE

$680.00

YAMAHA BANSHEE NEW OEM CRANKCASES – READY FO! R 4-MIL SUPER CUB BUILD🏁

Up for sale is a brand new, genuine OEM Yamaha crankcase set for the legendary Banshee 350 (YFZ350)—professionally machined and ready for your 4-mil Super Cub build!

This is the perfect foundation for a high-performance big-bore engine. Starting with factory-fresh OEM cases ensures superior metallurgy, perfect mating surfaces, and zero hours of wear. Then, they have been expertly clearanced to accept the larger cylinder sleeves and stroker crank required for a 4-mil Super Cub setup. This is the ultimate starting point for any serious builder looking to create a 421cc or 472cc monster.

Key Features & Unmatched Qualities

  • 100% Brand New OEM Yamaha Cases: These are not used, worn-out, or welded cores. They are fresh, virgin OEM castings straight from Yamaha. Zero hours, zero stress cracks, zero stripped threads—just perfect, unmolested factory metal ready for your build.

  • Professionally Machined for 4-Mil Super Cub: These cases have been precision-machined to accept the larger 72mm bore cylinders and the +4mm stroker crank. The cylinder openings have been bored out and the crank area has been trenched to provide proper clearance for the stroker assembly. This is not a DIY job—it has been done right by professionals.

  • Ready to Assemble: Everything is done. No need to send your cases out for machining, no waiting, no guesswork. These cases are ready to go straight out of the box—just install your 4-mil crank, Super Cub cylinders, and internals, and start building.

  • Perfect for High-Performance Builds: Designed specifically for the popular 4-mil Super Cub (421cc/472cc) setup. This combination delivers massive horsepower gains while maintaining reliability—the ideal foundation for a dune, drag, or all-out race machine.

  • Untouched & Un-Modified Elsewhere: Aside from the necessary machining for the Super Cub setup, these cases have NOT been hacked, welded, or modified in any other way. All factory mounting points, threads, and bearing pockets are completely intact and pristine.

Condition & Warranty – READ CAREFULLY

  • Condition: Brand New – Professionally Machined: These are new, unused OEM cases that have been expertly machined for a 4-mil Super Cub build. They have never been assembled, never been run, and have zero hours of use. The machining work is clean, precise, and ready for assembly.

  • Full Transparency: We have inspected these cases thoroughly. The machining is flawless, all threads are pristine, and there are no defects. What you see is exactly what you get—a perfect foundation for your dream build.

  • ✅ 1-MONTH WARRANTY INCLUDED ✅: We stand behind the quality of our parts and the machining work. These cases come with a full 30-day warranty from the date of purchase. If there is a hidden casting defect or machining error that affects assembly or function within that period, we will work with you to make it right—whether that means a replacement, a refund, or a store credit.

    • Warranty Coverage: Covers hidden casting defects, machining errors, or structural flaws not visible at the time of sale.

    • Warranty Exclusions: Does not cover damage from improper assembly, misuse, accidents, or modification after purchase. Normal wear and tear is not applicable to new cases.

  • Builders’ Note: We highly recommend having these cases assembled by an experienced Banshee engine builder familiar with Super Cub setups. Proper assembly is critical to achieving the performance and reliability these cases are capable of delivering.

Serious Buyer Terms

  • Serious Buyers Only: We know how valuable new OEM cases are—and finding a set already machined for a 4-mil Super Cub is even rarer. If you are building a high-performance engine, this is the foundation you have been searching for.

  • No Trades: We are not interested in trades, partial trades, or bartering. Sale is strictly cash-in-hand, verified PayPal, Venmo, or bank transfer.

  • Shipping: These cases will be professionally packed with plenty of bubble wrap, foam, and protective inserts in the bearing pockets to ensure they arrive to your doorstep in the same perfect condition they leave ours. Tracking and insurance will be provided.

This is your chance to secure brand new, professionally machined OEM cases for your 4-mil Super Cub build—backed by a 1-month warranty for absolute peace of mind!

Once these cases are gone, finding another set this fresh and ready to go will be nearly impossible.

Don’t let this builder’s dream slip away—message me to claim them today! 🏁

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