WSM - 50-520-69 - Piston Kit - 69.00 mm - Big Bore - Yamaha 350 Banshee
Engine rebuilds are only as good as the parts that go back in, and when it comes to the piston — the component under more sustained thermal and mechanical stress than anything else in the top end — there is no room for compromise. The WSM 50-520-69 is a precision-engineered piston kit for 69.00 mm / Big Bore / Yamaha 350 Banshee engines, built to hold dimensional tolerances across thousands of heat cycles. Coated with MOS2 for high performance and heat absorption, giving you the kind of fit-from-day-one accuracy that prevents premature wear on the cylinder wall, wrist pin, and rings. Ported to match WSM Banshee sleeves. Bore - Oversize: +5.00 mm. Whether you are overboring for more displacement or simply replacing what age and hours have worn out, the 50-520-69 gives you a forged foundation you can trust.
Features
- Coated with MOS2 for high performance and heat absorption
- Ported to match WSM Banshee sleeves
- Made in Germany
Specifications
- Bore - Oversize: +5.00 mm
- Bore Size: 69.00 mm
- Style: Big Bore
- Engine Type: 2-Stroke
- Units: Kit
- Bore - Oversize: +5,00 mm
- Displacement: 347 cc
- Product Name: Piston Kit
- Piston Material: Aluminum Alloy
- Riding Style: ATV
Frequently Asked Questions - WSM - 50-520-69 - Piston Kit - 69.00 mm - Big Bore - Yamaha 350 Banshee
How do I know if this part fits my vehicle?
Check the fitment information listed on this page against your exact year, make, model, and (where applicable) trim, engine size, or configuration. If your exact vehicle isn't listed, or you're not sure, use the product chat on this page or contact our support team before ordering - we're glad to help confirm fitment.
What does it mean if a product is listed as universal fit?
Universal fit means the product is designed to work across a range of vehicles, not that it's guaranteed to fit every one. Compare the listed measurements, mounting requirements, and connector or hardware specs against your specific vehicle before ordering, since some installations may need additional hardware or minor fabrication.
Where can I find installation instructions for this product?
General installation notes are provided above where available. For detailed step-by-step instructions, refer to the manufacturer's documentation included with the product, or use the product chat on this page for questions about difficulty, required tools, or whether professional installation is recommended.
What if I have more questions about this product?
Use the product chat on this page for fitment, specs, installation, and compatibility questions, or contact our support team directly for help before you order.
