Wossner 4-stroke Piston Kit Standard Bore
Wossner 4-stroke Piston Kit Standard Bore
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About this product
About this product
Upgrade your 4-stroke engine with the Wossner 4-Stroke Piston Kit. Designed and manufactured in-house, Wossner ensures top-tier quality and performance. This kit provides enhanced power and reliability for your machine.
Description
The Wossner 4-Stroke Piston Kit features a double-bridged, lightweight forged piston design for optimal strength and reduced weight. Manufactured in Wossner's forging operation, the pistons boast the industry's tightest piston-wall clearances, resulting in a quieter running engine. The moly-coated piston skirt minimizes friction and aids in proper break-in, ensuring longevity and consistent performance. With a compression ratio of 13.8:1, this kit provides a significant boost in power and responsiveness. Trusted by leading Supercross, Arenacross, and MX GP teams, Wossner piston kits deliver race-proven reliability and performance. Installation is straightforward, making it an ideal upgrade for both professional mechanics and experienced enthusiasts.
Features & highlights
- Forged piston provides superior strength and durability for high-performance applications.
- Lightweight design reduces engine vibration and improves throttle response.
- Moly-coated piston skirt minimizes friction and extends engine life.
- Tight piston-wall clearances ensure quieter engine operation and optimal performance.
- High compression ratio (13.8:1) delivers increased power and torque.
- Complete kit includes piston, rings, wrist pin, and pin locks for a hassle-free installation.
- Used by top Supercross, Arenacross, and MX GP teams, guaranteeing race-proven reliability.
Technical specifications
- Brand: Wossner
- Engine Type: 4-Stroke
- Piston Material: Forged, Steel
- Piston Diameter: 76.96 mm
- Bore - Oversize: Standard
- Piston Size: Standard Size B
- Compression Ratio: 13.8:1
- Ring Material: Steel, Cast
- Skirt Coating: Moly Coated
- Stroke Length: 53.60 mm
- Type: Replacement Forged Piston
- Units: Kit
Important to know
Ensure proper installation by a qualified mechanic. Verify compatibility with your specific motorcycle model before installation.
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
Parts Denmark Info
Parts Denmark Info
Parts Denmark is a new webshop based in Denmark. We have a physical location you can visit (No showroom yet), and we have both email and phone support in our opening hours.
Our company info is:
Parts Denmark ApS
VAT: DK45974758
Dam Holme 11
3660 Stenløse, Denmark
hello@partsdenmark.com
+45 222 333 29
Best regards,
William Svendsen & Martin Høyer (Owners)
Specifications
WOSSNER
8921DB
Piston Kit
13,8:1
Forged, Steel
53,60 mm
Steel, Cast
Standard Size B
76,96 mm
Moly Coated
4-Stroke
Replacement Forged Piston
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.
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