PISTON KIT 06-11 YFM700 HC 102, WOSSNER 8673DA RAPTOR 1S3-11631-10-00

The Wossner 8673DA forged piston kit is a high-compression component designed for Yamaha YFM700 Raptor ATVs from 2006 to 2016. Manufactured in Germany, this piston features enhanced heat transfer and structural durability, with an elliptical design that distributes pressure evenly and prevents collapse during thermal expansion.

Features

• Forged high-compression piston for increased durability and strength
• Engineered for efficient heat transfer to cylinder walls
• Elliptical design promotes even pressure distribution during expansion
• Minimizes localized stress and reduces risk of piston collapse
• Manufactured in Germany

Specifications

• Display: 686 cm³
• Bore: Not specified
• 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: 8673DA
• Lock: NCW23
• Pin: WP024
• Ring Set: 1020XSU
• Part No.: 56-W4903+000.WO
• OEM Reference: 1S3-11631-10-00, 4903M10200

Vehicle Fitments

• Yamaha YFM700 Raptor 2006–2016

Dispatch Times

Local Stock: Dispatches in < 24 hours

Parts showing as available at our Warehouse in Gorey ship the same business day if ordered before 1pm. 

Supplier Stock: Dispatches in 2-4 Days

Parts showing as available at our Supplier Warehouse are ordered from our supplier and delivered to us before we can dispatch. More info is available on this page under "Stock Availability".

OEM Special Order: Dispatches in 3-10 Days

This website does not have access to live stock levels from our OEM Suppliers. In most cases the parts will be available but in the case of backordered parts we will notify you. We receive parts from Yamaha in 3-4 days, All others including Honda, Suzuki, Kawasaki, Polaris please allow 7-10 days for us to receive the parts. 

Delivery Times

Ireland & Northern Ireland:

1-2 Days using GLS/An Post

Germany, France, Netherlands, Belgium:

3-5 Days using GLS/Fedex

Italy, Spain & Other EU Countries:

4-7 Days using GLS/Fedex