PISTON KIT 02-20 YZ85 47.50 A, WOSSNER 8104DA YAMAHA MX
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Wossner forged piston kit with a 47.50mm bore. Standard size replacement for Yamaha YZ85 models. Engineered for durability and thermal efficiency in two-stroke engines, this German-made piston utilises advanced materials and design features to ensure consistent performance under high-stress conditions. Features forged construction for maximum strength and longevity. Designed to facilitate optimal combustion heat transfer to the cylinder walls. Elliptical profile ensures even load distribution and reduces piston collapse risk. Made in Germany. Specifications: Bore: 47.50mm, Actual Bore: 47.45mm, Engine Displacement: 85 cm³, Stroke: 47.80mm, Clearance: 0.05mm, Compression Ratio: 2-stroke (Wossner and OEM), Compression Height: 26.00mm, Lock Part Number: CW14, Pin Part Number: WP058, Ring Set Part Number: RSB4750, Con Rod Kit Part Number: P2008. Cross-Reference OEM Part Numbers: 5PA-11631-10-A0, 09104832, 805M04750.
- SKU
- 56-W805.A.WO
- Brand
- Wossner
- Availability
- In Stock (1)
Fitments (52)
| Make | Model | Year |
|---|---|---|
| YAMAHA | YZ 80 | 1993 |
| YAMAHA | YZ 80 | 1994 |
| YAMAHA | YZ 80 | 1995 |
| YAMAHA | YZ 80 | 1996 |
| YAMAHA | YZ 80 | 1997 |
| YAMAHA | YZ 80 | 1998 |
| YAMAHA | YZ 80 | 1999 |
| YAMAHA | YZ 80 | 2000 |
| YAMAHA | YZ 80 | 2001 |
| YAMAHA | YZ 85 | 2002 |
| YAMAHA | YZ 85 | 2003 |
| YAMAHA | YZ 85 | 2004 |
| YAMAHA | YZ 85 | 2005 |
| YAMAHA | YZ 85 | 2006 |
| YAMAHA | YZ 85 | 2007 |
| YAMAHA | YZ 85 | 2008 |
| YAMAHA | YZ 85 | 2009 |
| YAMAHA | YZ 85 | 2010 |
| YAMAHA | YZ 85 | 2011 |
| YAMAHA | YZ 85 | 2012 |
| YAMAHA | YZ 85 | 2013 |
| YAMAHA | YZ 85 | 2014 |
| YAMAHA | YZ 85 | 2015 |
| YAMAHA | YZ 85 | 2016 |
| YAMAHA | YZ 85 | 2017 |
| YAMAHA | YZ 85 | 2018 |
| YAMAHA | YZ 85 | 2019 |
| YAMAHA | YZ 85 | 2020 |
| YAMAHA | YZ 85 | 2021 |
| YAMAHA | YZ 85 | 2022 |
| YAMAHA | YZ 85 | 2023 |
| YAMAHA | YZ 85 | 2024 |
| YAMAHA | YZ 85 | 2025 |
| YAMAHA | YZ BB 85 | 2002 |
| YAMAHA | YZ BB 85 | 2003 |
| YAMAHA | YZ BB 85 | 2004 |
| YAMAHA | YZ BB 85 | 2005 |
| YAMAHA | YZ BB 85 | 2006 |
| YAMAHA | YZ BB 85 | 2007 |
| YAMAHA | YZ BB 85 | 2008 |
| YAMAHA | YZ BB 85 | 2009 |
| YAMAHA | YZ BB 85 | 2010 |
| YAMAHA | YZ BB 85 | 2011 |
| YAMAHA | YZ BB 85 | 2012 |
| YAMAHA | YZ BB 85 | 2013 |
| YAMAHA | YZ BB 85 | 2014 |
| YAMAHA | YZ BB 85 | 2015 |
| YAMAHA | YZ BB 85 | 2016 |
| YAMAHA | YZ BB 85 | 2017 |
| YAMAHA | YZ BB 85 | 2018 |
| YAMAHA | YZ BB 85 | 2019 |
| YAMAHA | YZ BB 85 | 2020 |
- General Product Group
- Engine
- General Product Type
- Pistons & Kits
- General Size
- 47.50mm
- Variant Id
- 257833
FULL DESCRIPTION
Wossner Forged Piston Kit 47.50mm Bore for Yamaha YZ85
This Wossner forged piston kit features a 47.50mm bore and is engineered for high-performance two-stroke engines. Manufactured in Germany, it utilizes advanced materials and design for exceptional durability and thermal efficiency.
Key Features
- Forged construction for maximum strength and longevity.
- Designed for optimal combustion heat transfer.
- Elliptical profile ensures even load distribution and reduces piston collapse risk.
- Made in Germany for quality assurance.
Specifications
- Bore: 47.50mm
- Actual Bore: 47.45mm
- Engine Displacement: 85 cm³
- Stroke: 47.80mm
- Clearance: 0.05mm
- Compression Ratio: 2-stroke (Wossner and OEM)
- Compression Height: 26.00mm
- Lock Part Number: CW14
- Pin Part Number: WP058
- Ring Set Part Number: RSB4750
- Con Rod Kit Part Number: P2008
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Check the fitment table on this page against your make, model and year. Not sure? Call or email us and we will check it for you before you order.
UK delivery is £4.99, or free on orders over £60. Orders ship within 3 working days, then delivery takes 2–4 business days. Delivery details
Yes. You have 14 days from delivery to return it, unused and in its original packaging. Contact us first and we will send you the return instructions. Returns policy
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