PISTON KIT 98-01 YFM600 95.00, FORGED WOSSNER 8501DA 3TB-11631-00-Y0

Wossner forged piston kit designed for superior strength and heat transfer efficiency. Engineered with an elliptical shape to ensure uniform bearing surfaces under heat expansion, reducing localized pressure and preventing piston collapse. Manufactured in Germany for high-performance applications.

Features

• Forged construction for enhanced durability and strength
• Optimized heat transfer for improved combustion efficiency
• Elliptical design for even thrust load distribution
• Made in Germany

Specifications

• Bore Size: 94.93mm (Standard = 95mm)
• Displacement: 595 cm³
• Stroke: 84.00mm
• Clearance: 0.07mm
• Wossner Compression Ratio: 10.70:1
• OEM Compression Ratio: 8.50:1
• Dome Volume: -0.50 cm³
• Compression Height: 28.00mm
• Theoretical Weight: Not specified

Included Components

• Piston Kit (8501DA)
• Piston Lock: CW22
• Piston Pin: WP009
• Piston Ring Set: 950XSY

Cross-Reference OEM Part Numbers

• 3TB-11631-00-Y0
• 01.2601.000

Vehicle Fitments

• Yamaha XT600 (1984-2004)
• Yamaha XT600E (1984-2004)
• Yamaha TT600 (1984-2004)
• Yamaha TT600R (1984-2004)
• Yamaha YFM600 Grizzly (1998-2001)

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