Prox Cast Piston Kit - 63.95mm
Prox Cast Piston Kit - 63.95mm
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Estimated delivery: Feb 05 - Feb 09
About this product
About this product
Upgrade your two-stroke engine with the Prox Cast Piston Kit. Designed for optimal performance and durability, this piston kit offers a reliable solution for both cast iron and Nikasil cylinder bores.
Description
The Prox Cast Piston Kit provides exceptional stability and is manufactured using gravity casting with a high-silicon aluminum alloy. The 18% silicon content minimizes thermal expansion, ensuring consistent performance under demanding conditions. Specifically designed for two-stroke engines, these pistons are available in standard size B (63.95mm) and a range of oversizes (A/B/C/D) for Nikasil cylinders, increasing in 0.01mm increments. Whether you're maintaining your current setup or looking for a performance boost, the Prox Cast Piston Kit delivers reliability and precision.
Features & highlights
- Enhanced stability provided by high-quality cast construction.
- Manufactured using gravity casting for consistent material density.
- High silicon content (18%) aluminum alloy reduces thermal expansion.
- Designed for both cast iron and Nikasil cylinder bores.
- Available in standard and oversize options for precise fitment.
- Optimized design for increased performance in two-stroke engines.
Technical specifications
- Brand: Prox
- Piston Material: Cast Aluminum Alloy
- Piston Diameter: 63.95 mm
- Piston Size: Standard Size B
- Engine Type: 2-Stroke
- Ring Material: Steel
- Units: Kit
Important to know
Ensure compatibility with your specific engine model and cylinder bore type before installation. Professional installation is recommended.
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
PROX
01.6249.B
Piston Kit
Aluminum Alloy, Cast
Steel
Standard Size B
63,95 mm
2-Stroke
Kit


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.

