PISTON KIT 2022 - 2023 YZ 125, WOSSNER 8331DB
4.1 Trustpilot 99.9% positive on eBay
Free UK delivery 2–4 business days
Spread the cost with 
18+, T&Cs apply
Wossner 8331DB Piston Kit 54.00mm bore, B Grade 53.96mm. Includes piston kit, ring set 2 X RSB5400, clips CW15, pin WP032. Features include a 28.00mm compression height and 54.5mm stroke. Wossner forged pistons offer superior strength and design, engineered for optimal combustion chamber heat transfer and uniform bearing surface under heat expansion. Made in Germany.
- SKU
- 56-W899.B.WO.
- Brand
- Wossner
- Availability
- In Stock (5)
Fitments (13)
| Make | Model | Year |
|---|---|---|
| FANTIC | XE 125 | 2023 |
| FANTIC | XE 125 | 2024 |
| FANTIC | XX 125 | 2022 |
| FANTIC | XX 125 | 2023 |
| FANTIC | XX 125 | 2024 |
| FANTIC | XX 125 | 2025 |
| YAMAHA | YZ 125 | 2022 |
| YAMAHA | YZ 125 | 2023 |
| YAMAHA | YZ 125 | 2024 |
| YAMAHA | YZ 125 | 2025 |
| YAMAHA | YZ 125X | 2023 |
| YAMAHA | YZ 125X | 2024 |
| YAMAHA | YZ 125X | 2025 |
- General Product Group
- Engine
- General Product Type
- Pistons & Kits
- Variant Id
- 314434
FULL DESCRIPTION
Wossner 54.00mm Piston Kit - B Grade (53.96mm)
This Wossner piston kit is engineered for optimal performance and durability. Featuring a 54.00mm bore size and a B grade piston measuring 53.96mm, this kit is designed to enhance combustion chamber efficiency.
Key Features:
- Superior Strength and Design: Wossner forged pistons are renowned for their exceptional strength and advanced design.
- Optimized Heat Transfer: Engineered to efficiently transfer combustion heat to cylinder walls for improved engine cooling.
- Elliptical Design: Features an elliptical shape that provides a uniform bearing surface, compensating for heat expansion. This prevents localized pressure, distributes thrust loads evenly, and eliminates piston collapse.
- High-Quality Manufacturing: Proudly made in Germany.
- Specific Measurements: Includes a compression height of 28.00mm and is designed for a 54.5mm stroke.
This kit includes replacement parts for rings (2 x RSB5400), clips (CW15), and pin (WP032).
QUESTIONS? JUST ASK
Talk to John or Phil. Real people, Monday to Friday, 10:00 to 17:00.
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
By card, PayPal, Apple Pay or Google Pay, or spread the cost with Klarna. Payment is taken securely by Stripe, and the options for your order are shown at checkout.
More answers in our FAQ.
Trade pricing available
Buying parts for your business? Apply for a 2BrosParts trade account.