Wossner Standard Series Piston Kit for 250cc 10.2:1 Compression
Wossner Standard Series Piston Kit for 250cc 10.2:1 Compression
About this product
About this product
Elevate your motorcycle's engine performance with the Wossner Standard Series Piston Kit. Engineered for durability and efficiency, this high-performance piston kit delivers superior power and a quieter operation for your 250cc 4-stroke engine. Featuring advanced materials and precision engineering, it's designed to optimize your ride.
Description
Experience a significant upgrade in engine reliability and power with the Wossner 250cc piston kit. Precision-machined from aerospace-grade forged aluminum alloy, these pistons ensure exceptional strength and resilience in critical areas such as the crown and skirt wall, while being optimized for lightness. This meticulous design contributes to a remarkable 10.2:1 compression ratio, enhancing your engine's responsiveness and overall power delivery. The advanced Molybdenum Disulphite (Moly) skirt coating is a key feature, significantly reducing friction and piston rock. This not only leads to a quieter engine operation and improved performance but also aids in the crucial break-in period, extending the lifespan of your engine. Designed specifically for 4-stroke 250cc engines with a 74.00 mm bore, this Wossner piston kit is a complete solution, including the piston, high-quality nitride coated steel and cast rings, piston pin, and retaining clips, ensuring a straightforward and comprehensive overhaul.
Features & Highlights
- Unmatched Durability: Forged from aerospace-grade aluminum alloy, these pistons offer superior strength and longevity, even under extreme riding conditions.
- Reduced Friction & Wear: The advanced Molybdenum Disulphite (Moly) skirt coating minimizes friction and piston rock, ensuring smoother operation, reduced wear, and a longer engine lifespan.
- Optimized Performance: Precision machining balances lightness with maintained strength in critical areas, contributing to improved power delivery and engine efficiency for your 250cc 4-stroke.
- Quiet Operation: The permanent skirt coating and precise fit reduce mechanical noise, providing a quieter and more refined engine sound.
- Complete Kit for Easy Installation: Each Wossner Standard Series piston kit includes everything needed for a complete replacement: piston, high-quality rings, piston pin, and clips.
- Engineered for Specificity: Tailored for 250cc engines with a 10.2:1 compression ratio and a 74.00 mm bore, ensuring perfect fit and optimal performance.
Technical Specifications
- Brand: Wossner
- Model Series: Standard Series
- Product Name: Piston Kit
- Engine Type: 4-Stroke
- Displacement: 250 cc
- Compression Ratio: 10.2:1
- Bore Size: 74.00 mm (Oversize +1.00 mm)
- Piston Diameter: 73.95 mm
- Piston Material: Forged Aluminum Alloy
- Skirt Coating: Molybdenum Disulphite
- Ring Material: Nitride Coated Steel, Cast
- Kit Includes: Piston, Rings, Piston Pin, Clips
- Vendor Part Number: 8646D100
Important to Know
- This Wossner Piston Kit is an oversize (+1.00 mm) piston, requiring the cylinder bore to be machined to 74.00 mm for proper fitment.
- Professional installation by a qualified mechanic is highly recommended for optimal performance and longevity.
Shipping & Return
Shipping & Return
Free shipping to GLS parcel shop parcel box for purchases over DKK 1,000.
GLS home delivery costs DKK 59.
We do our best to ship your order as quickly as possible. All orders are generally packed within 24 hours on weekdays.
There is a 14-day return policy. Read more
Specifications
8646D100
Standard Series
Piston Kit
74,00 mm
10,2:1
250 cc
Aluminum Alloy, Forged
95 mm
58 mm
Nitride Coated, Steel, Cast
+1,00 mm
96 mm
73,95 mm
Molybdenum Disulphite
4-Stroke
Kit
Reviews


Who is behind Parts Denmark
Martin and William are the duo behind Parts Denmark — an unlikely but awesome combo of a tech-savvy young IT wizard and a seasoned motorcycle guru who’s seen (and fixed) it all. Together, we’ve built a team with big ambitions, plenty of passion, and a shared mission to create great things — side-by-side with you.
Based in Denmark
Fast customer support
Over 100.000 Products
2-Year Full Warranty
Your peace of mind is our priority. Every product in our shop comes with a comprehensive 2-year warranty, so you can hit the road with full confidence.
Support in Danish, Swedish, German & English
Whether you are upgrading your exhaust or choosing a new helmet, our team of seasoned riders is ready to provide professional guidance for your specific bike.
Free Shipping Over 200€ (EU)
Shop your favorite gear without worrying about extra costs. We offer free shipping on all orders over 200€ (EU), ensuring your parts reach you safely and affordably.
Authorized Parts Europe Dealer
As a certified Parts Europe supplier, we guarantee 100% authentic, high-quality motorcycle parts and accessories directly from the world's leading manufacturers.

