Does it fit your motorcycle?
Look it up by licence plate or VIN, or choose your model.
Confirmed compatible · Position:
This part doesn't fit your bike. See parts that fit
Fits most motorcycles
Not model-specific. Check dimensions and specifications in the description before ordering.
Chosen by size, not by model
The size is printed on the tyre sidewall, e.g. 120/70 ZR17, and in your registration document.
Checking fitment…
Fitment check unavailable
Wossner Pro 4-Stroke Forged Piston Kit - +0.50mm - 9.9:1 - 8505D050
Product info
- Item number
- 09104911
- Manufacturer number
- 8505D050
- Position
Upgrade your 4-stroke engine with the Wossner 4-Stroke Piston Kit, meticulously engineered for superior performance and durability. Wossner's in-house design and manufacturing processes ensure that every piston meets the highest standards, delivering unmatched reliability on the track or trail.
Description
The Wossner 4-Stroke Piston Kit features a double-bridged, lightweight forged piston design, providing exceptional strength and reduced reciprocating mass for improved throttle response and engine efficiency. The moly-coated piston skirt minimizes friction, aiding in a faster break-in and extending engine life. Designed with tight piston-wall clearances, this kit ensures quieter engine operation. This replacement forged piston kit is a staple for Supercross, Arenacross and MX GP teams.
Features & highlights
- In-house designed and manufactured using Wössner’s proprietary forging process for ultimate quality control.
- Double-bridged, lightweight forged piston design enhances strength and reduces weight.
- Moly-coated piston skirt reduces friction, promoting faster break-in and extended engine life.
- Tight piston-wall clearances ensure quieter engine operation.
- High compression ratios available for optimized 4-stroke performance.
- Includes piston, ring, wrist pin, and pin locks for a complete installation.
- Trusted by leading Supercross, Arenacross, and MX GP teams.
Technical specifications
- Brand: Wossner
- Bore - Oversize: +0.50 mm
- Compression Ratio: 9.9:1
- Engine Type: 4-Stroke
- Piston Material: Forged, Steel
- Ring Material: Steel, Cast
- Skirt Coating: Moly Coated
- Stroke Length: 84.00 mm
- Type: Replacement Forged Piston
Important to know
Ensure compatibility with your specific engine model before purchase. Professional installation is recommended.
- Brand
- WOSSNER
- Vendor part number
- 8505D050
- Product name
- Piston Kit
- Compression ratio
- 9,9:1
- Piston material
- Forged, Steel
- Stroke length
- 84,00 mm
- Ring material
- Steel, Cast
- Skirt coating
- Moly Coated
- Engine type
- 4-Stroke
- Type
- Replacement Forged Piston
- Units
- Kit
Free shipping to a GLS parcel shop or parcel box on orders over €200.
We ship your order as quickly as we can. Orders are usually packed within 24 hours on weekdays.
You have a 14-day right of return. Read more
Certified e-mærket web shop
