PISTON KIT 98-01 YZ125 55.00, WOSSNER 8091D100 YAMAHA MX
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This item is dispatched directly to you by our supplier. Supplier stock is separate from stock held at BTP.
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PISTON KIT 98-01 YZ125 55.00, WOSSNER 8091D100 YAMAHA MX is available to order. Please contact us to confirm availability and lead time.
Pickup currently unavailable at Braydon Trailers HQ
BTP – Your Trusted Trailer & ATV Specialists in the South West
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Description
Description
This Wossner piston kit with a 55.00mm bore (+1.00mm oversize) is designed for Yamaha YZ125 and WR125 models from 1998 to 2001. Manufactured in Germany, the forged piston ensures strength, uniform heat expansion, and reliable performance under two-stroke engine conditions.
Features
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Forged piston construction enhances strength and durability
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Efficient heat transfer from combustion chamber to cylinder wall
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Elliptical design ensures even pressure distribution and minimises piston distortion
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Produced in Germany for consistent quality and precision
Specifications
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Bore size: 55.00 mm
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Actual piston size: 54.95 mm
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Display (cm³): 125
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Stroke (mm): 54.50
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Clearance (mm): 0.05
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Compression ratio: 2-stroke (Wossner and OEM)
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Compression height (mm): 28.00
Vehicle Fitments
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1998 Yamaha WR125
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1998 Yamaha YZ125 Base
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1999 Yamaha WR125
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1999 Yamaha YZ125 Base
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2000 Yamaha WR125
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2000 Yamaha YZ125 Base
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2001 Yamaha WR125
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2001 Yamaha YZ125 Base
Included Components
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Piston: Wossner PN# 8091D100
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Lock: PN# CW15
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Pin: PN# WP032
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Ring Set: PN# RSB5500
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Rod: PN# P2019
