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PISTON KIT 1989 YZ125 56.00, WOSSNER 8131DA YAMAHA MX

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PISTON KIT 1989 YZ125 56.00, WOSSNER 8131DA YAMAHA MX

PISTON KIT 1989 YZ125 56.00, WOSSNER 8131DA YAMAHA MX

Wossner Forged Piston Kit 56.00mm Bore ā€“ Yamaha YZ125 1989 (8131DA STD)

This Wossner forged piston kit is designed for the 1989 Yamaha YZ125, featuring a standard bore size of 56.00mm (actual 55.94mm). Built for 2-stroke engine performance, it provides exceptional strength and thermal efficiency through its forged aluminium construction. The pistonā€™s elliptical shape ensures uniform thrust load distribution during thermal expansion, reducing localised pressure and the risk of piston collapse. Manufactured in Germany for consistent quality.



Features





  • Forged piston construction for superior strength and reliability




  • Engineered to optimise heat transfer from the combustion chamber to the cylinder walls




  • Elliptical profile maintains a uniform bearing surface under thermal expansion




  • Developed for 2-stroke engines




  • Made in Germany





Specifications





  • Bore Size: 56.00mm (Standard)




  • Actual Bore: 55.94mm




  • Compression Height: 28.00mm




  • Clearance: 0.06mm




  • Stroke: 50.00mm




  • Displacement: 123 cmĀ³




  • Wossner Compression Ratio: 2-stroke




  • OEM Compression Ratio: 2-stroke





Cross-Reference OEM Part Numbers





  • Wossner Piston: 8131DA




  • Ring Set: RSB5600




  • Lock: CW16




  • Pin: WP036




  • Rod: P2047




  • Internal Reference: 56-W582+00A.WO





Vehicle Fitments





  • 1989 Yamaha YZ125



$73.75

Original: $210.72

-65%
PISTON KIT 1989 YZ125 56.00, WOSSNER 8131DA YAMAHA MXā€”

$210.72

$73.75

Product Information

Shipping & Returns

Description

Wossner Forged Piston Kit 56.00mm Bore ā€“ Yamaha YZ125 1989 (8131DA STD)

This Wossner forged piston kit is designed for the 1989 Yamaha YZ125, featuring a standard bore size of 56.00mm (actual 55.94mm). Built for 2-stroke engine performance, it provides exceptional strength and thermal efficiency through its forged aluminium construction. The pistonā€™s elliptical shape ensures uniform thrust load distribution during thermal expansion, reducing localised pressure and the risk of piston collapse. Manufactured in Germany for consistent quality.



Features





  • Forged piston construction for superior strength and reliability




  • Engineered to optimise heat transfer from the combustion chamber to the cylinder walls




  • Elliptical profile maintains a uniform bearing surface under thermal expansion




  • Developed for 2-stroke engines




  • Made in Germany





Specifications





  • Bore Size: 56.00mm (Standard)




  • Actual Bore: 55.94mm




  • Compression Height: 28.00mm




  • Clearance: 0.06mm




  • Stroke: 50.00mm




  • Displacement: 123 cmĀ³




  • Wossner Compression Ratio: 2-stroke




  • OEM Compression Ratio: 2-stroke





Cross-Reference OEM Part Numbers





  • Wossner Piston: 8131DA




  • Ring Set: RSB5600




  • Lock: CW16




  • Pin: WP036




  • Rod: P2047




  • Internal Reference: 56-W582+00A.WO





Vehicle Fitments





  • 1989 Yamaha YZ125



PISTON KIT 1989 YZ125 56.00, WOSSNER 8131DA YAMAHA MX | SMXOFFROAD Ltd