WOSSNER 103mm PISTON KIT HC, YAMAHA YFM700 RAPTOR 06-17, GRIZZLY 07-13

The Wossner 8673D100 forged piston kit features a 103.00mm bore and is designed for high-compression applications in Yamaha YFM700 Raptor ATVs from 2006 to 2016. Precision-engineered in Germany, this piston enhances strength, heat dissipation, and durability, while its elliptical shape ensures even load distribution and resistance to collapse under thermal expansion.

Features

• Forged high-compression piston for increased performance and strength
• Designed for effective heat transfer from combustion chamber to cylinder walls
• Elliptical design provides uniform bearing surface under heat expansion
• Reduces localized pressure and prevents piston collapse
• Manufactured in Germany

Specifications

• Bore: 103.00 mm
• Actual Bore Diameter: 102.94 mm
• Display: 686 cm³
• Hub Stroke: 84.00 mm
• Clearance: 0.06 mm
• Compression Height: 27.50 mm
• Dome Volume: +7.10 cm³
• Wossner Compression Ratio: 11.00:1
• OEM Compression Ratio: 9.20:1
• Theoretical Weight: Not specified

Cross-Reference OEM Part Numbers

• Piston: 8673D100
• Lock: CW23
• Pin: WP024
• Ring Set: 1030XSU
• Rod: P4031
• Part No.: 56-W4903+100.WO

Vehicle Fitments

• Yamaha YFM700 Raptor 2006–2016

Majority of our listings are for a direct replacement for your original part.

Our parts are made of quality and are designed to meet or exceed the original OEM Standards.

Our products are often a cost effective alternative to genuine OEM Parts.

Please note: the models of bike we state in our listings are for general guidance only. Please make sure this item will fit your bike before purchasing. Also, we cannot guarantee fitment to any non-UK models.