PISTON KIT 02-13 TRX250 69.50, FORGED PISTON WOSSNER 8870D100, HONDA ATV

Wossner forged piston kit designed for superior strength and durability. Engineered for optimal heat transfer from the combustion chamber to the cylinder walls. The elliptical design ensures a uniform bearing surface under heat expansion, reducing localized pressure and evenly distributing thrust loads to prevent piston collapse. Manufactured in Germany for high-quality performance. This piston has an oversize bore of +1.00mm.

Features

• High-strength forged construction for durability
• Optimized heat transfer for improved engine performance
• Elliptical design for even load distribution and prevention of piston collapse
• Precision manufacturing in Germany
• Oversize bore +1.00mm

Specifications

• Bore Size: 69.50mm
• Actual Diameter: 69.45mm
• Displacement: 229 cm³
• Stroke: 62.20mm
• Clearance: 0.05mm
• Compression Ratio: OEM
• OEM Compression Ratio: 10.00:1
• Dome Volume: +4.10 cm³
• Compression Height: 21.70mm

Included Components

• Piston: Wossner 8870D100
• Ring Set: 695XKS
• C-Clip Set: CW15
• Pin: WP102

Cross-Reference OEM Part Numbers

• 13101-HN6-000
• 13101-HM8-A40
• Namura NA-10025

Vehicle Fitments

• Honda TRX250EX Sportrax (2001-2013)
• Honda TRX250 Recon Utility (1997-2001)
• Honda TRX250 FourTrax Recon ES/TE/TM (2002-2013)
• Honda TRX250X (2009, 2011-2012)