PISTON KIT 95-05 YFM350 84.00, FORGED WOSSNER 8605D100
Wossner forged piston kit for Yamaha YFM350 Warrior and Big Bear models 1986-2005. Manufactured in Germany, this piston features an elliptical design for even load distribution, superior strength, and efficient heat transfer. Specifications include a bore size of 84.00 mm (+1.00 mm oversize), actual bore 83.94 mm, stroke 64.50 mm, clearance 0.06 mm, compression height 28.30 mm, dome volume +2.30 cm³, compression ratio 9.20:1 OEM, and displacement 349 cm³. Wossner part number 8605D100.
- SKU
- 56-W4419+100.WO
- Brand
- Wossner
- Availability
- In Stock (1)
FULL DESCRIPTION
Wossner Forged Piston Kit for Yamaha 350cc Engines
This Wossner forged piston kit is engineered for high-performance and durability in Yamaha 350cc engines. Manufactured in Germany, it features a robust forged construction for superior strength and efficient heat transfer, contributing to optimal engine performance. The innovative elliptical design ensures uniform load distribution across the piston, minimizing localized pressure and preventing piston collapse for extended engine life.
Key Features:
- Forged construction for enhanced durability and strength.
- Optimized heat transfer for improved engine performance.
- Elliptical piston design for uniform bearing surface and reduced wear.
- Specifically designed for 4-stroke engines.
Specifications:
- Bore Size: 84.00 mm (+1.00 mm oversize)
- Actual Bore: 83.94 mm
- Stroke: 64.50 mm
- Clearance: 0.06 mm
- Compression Height: 28.30 mm
- Dome Volume: +2.30 cm³
- Compression Ratio: 9.20:1 (OEM)
- Displacement: 349 cm³
- Origin: Made in Germany
Included Components:
- Piston
- Lock P/N: CW19
- Pin P/N: WP026
- Ring Set P/N: 840XSY


