PISTON KIT 03-09 CR85 47.50 A, WOSSNER 8105DA HONDA MX

This Wossner forged piston kit is designed for the Honda CR85 from 2003 to 2009, featuring a 47.50mm bore and a 47.45mm piston diameter. Engineered for optimal strength and thermal efficiency, it delivers precision and durability for high-performance two-stroke applications.

Features

• Forged construction ensures superior strength and longevity

• Designed for effective heat transfer from combustion chamber to cylinder walls

• Elliptical piston profile distributes load evenly during expansion, minimising localised pressure and risk of piston collapse

• Manufactured in Germany for consistent quality

Specifications

• Bore Size: 47.50 mm

• Piston Diameter: 47.45 mm

• Compression Height: 24.00 mm

• Stroke: 47.80 mm

• Clearance: 0.05 mm

• Compression Ratio: 2-stroke (Wossner and OEM)

• Displacement: 84 cm³

Cross-Reference OEM Part Numbers

• Wossner Piston Kit: 8105DA

• Alternate Piston Kit Reference: 56-W833.A.WO

• Lock: CW14

• Pin: WP058

• Ring Set: RSB4750

• Rod: P2003

OEM References:

• PIN, PISTON: 13111-GC4-600

• PISTON B: 13120-GBF-B40

• RING, PISTON TOP: 13121-GBF-B41

Vehicle Fitments

• 2003 Honda CR85

• 2004 Honda CR85

• 2005 Honda CR85

• 2006 Honda CR85

• 2007 Honda CR85

• 2008 Honda CR85

• 2009 Honda CR85