Piston Kit Yfm YFB250 73.00, Wossner Forged 8659D200

Piston Kit Yfm YFB250 73.00, Wossner Forged 8659D200. Find the product specifications and compatibility information below.

Product details

• Product: Piston Kit Yfm YFB250 73.00, Wossner Forged 8659D200
• Part number: 56-W4675+200.WO
• Brand: Wossner
• The Wossner 73mm Bore Piston Kit (Part No. 8659D200) is a high-performance forged piston designed for Yamaha YFM250 Timberwolf, YFB250 Bear Tracker, Bruin, and Big Bear models. Engineered for strength and durability, it optimizes heat transfer within the combustion chamber and features an elliptical design to ensure even load distribution, reducing localized pressure and preventing piston collapse. Manufactured in Germany, this piston maintains the OEM compression ratio for reliable engine performance.
• High-strength forged piston construction
• Optimized heat transfer for improved combustion efficiency
• Elliptical design for even thrust load distribution
• Manufactured in Germany
• Bore Size: 73mm
• Actual Bore Diameter: 72.94mm
• Compression Ratio: OEM
• OEM Compression Ratio: 9.50:1
• Displacement: 229cc
• Stroke: 58.00mm
• Clearance: 0.06mm
• Dome Volume: -4.70cm³
• Compression Height: 23.80mm
• Cross-Reference OEM Part Numbers
• Lock P/N: CW16
• Pin P/N: WP041
• Ring Set P/N: 730XDS
• Vehicle Fitments
• Yamaha YFM250 Timberwolf (1990-2000)
• Yamaha YFB250 Bear Tracker (2000-2004)
• Yamaha Bruin (2005-2006)
• Yamaha Big Bear (2007-2009)

Compatibility

No separate vehicle-fitment table record was supplied for this part. Check any application details, sizes and specifications above before ordering.

Why buy from FDY Performance?

FDY Performance is a UK motorcycle and ATV parts specialist. We help riders find parts with clear specifications, vehicle fitment information where available and support before ordering.

Need help choosing the right part?

Contact us with your bike make, model and year, plus the part number shown above, and we can help you check compatibility.

• Call: 07765 534854
• Email: fdy@fdyperformance.com
• Website: www.fdyperformance.com