PISTON KIT 98-01 YZ125 54.50, WOSSNER 8091D050 YAMAHA MX
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Wossner 54.50mm bore piston kit, 0.50mm oversize, for Yamaha YZ125 and WR125 models from 1998 to 2001. Features a forged piston for superior strength and reliability, optimised heat transfer, and an elliptical design for reduced localised pressure and even thrust load distribution. Precision manufactured in Germany. Specifications include a bore size of 54.50 mm, actual piston size of 54.45 mm, displacement of 125 cm³, stroke of 54.50 mm, clearance of 0.05 mm, 2-stroke compression ratio, and compression height of 28.00 mm. Included components: Piston (Wossner PN# 8091D050), Lock (PN# CW15), Pin (PN# WP032), Ring Set (PN# RSB5450), and Rod (PN# P2019). Weight: 188 grams. Manufacturer: Wossner.
- SKU
- 56-W726_050.WO
- Brand
- Wossner
- Availability
- In Stock (2)
- General Product Group
- Engine
- General Product Type
- Pistons & Kits
- General Size
- 54.5mm
- Variant Id
- 257559
FULL DESCRIPTION
Wossner Piston Kit 54.50mm Oversize for Yamaha YZ125/WR125
Upgrade your Yamaha YZ125 or WR125 engine with this high-performance Wossner forged piston kit. Precision-engineered in Germany, this kit is designed to deliver superior strength, durability, and optimal heat management for demanding two-stroke applications.
Key Features:
- Forged piston construction ensures exceptional strength and reliability under high stress.
- Advanced design promotes efficient heat transfer from the combustion chamber to the cylinder wall, preventing overheating.
- Elliptical piston shape is engineered to reduce localized pressure and evenly distribute thrust loads for smoother operation.
- Manufactured with precision in Germany to exacting standards.
Specifications:
- Oversize Bore: 54.50 mm
- Actual Piston Diameter: 54.45 mm
- Engine Displacement: 125 cm³
- Stroke: 54.50 mm
- Piston to Cylinder Clearance: 0.05 mm
- Compression Height: 28.00 mm
- Compression Ratio: Compatible with 2-stroke (Wossner and OEM specifications)
Included Components:
- Wossner Piston (Part # 8091D050)
- Piston Lock (Part # CW15)
- Piston Pin (Part # WP032)
- Ring Set (Part # RSB5450)
- Rod (Part # P2019)
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Yes. We ship from the UK. Orders ship within 3 working days, then delivery to the United States takes 5–8 business days. The delivery price is shown at checkout before you pay. Delivery details
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