Prox Cast Piston Kit - 66.37mm
Prox Cast Piston Kit - 66.37mm
Available in stock (6)
-
Estimated delivery: Feb 05 - Feb 09
About this product
About this product
Upgrade your two-stroke engine's performance with the Prox Cast Piston Kit. Engineered for reliability and enhanced power, this piston kit delivers improved thermal stability and wear resistance. Ideal for enthusiasts and professionals seeking a durable and high-performing piston solution.
Description
The Prox Cast Piston Kit is designed with performance and durability in mind. Manufactured using gravity casting with a high-silicon aluminum alloy, these pistons offer exceptional stability and reduced thermal expansion. The 66.37mm piston is meticulously crafted to ensure optimal fit and function, mirroring OEM specifications while incorporating design enhancements for increased performance. Suitable for both cast iron and Nikasil cylinder bores, Prox offers a range of oversizes (A/B/C/D) in 0.01mm increments for Nikasil bores, allowing for precise engine tuning and rebuilds. The moly-coated skirt reduces friction and enhances wear resistance, ensuring long-lasting performance.
Features & highlights
- Enhanced thermal stability thanks to high-silicon aluminum alloy.
- Gravity-cast for superior strength and durability.
- Moly-coated skirt reduces friction and wear.
- Designed to meet or exceed OEM specifications for fit and performance.
- Suitable for both cast iron and Nikasil cylinder bores.
- Available in standard and oversize options for precise fitment.
- Improved performance through design enhancements.
Technical specifications
- Brand: Prox
- Piston Material: Cast Aluminum Alloy
- Piston Diameter: 66.37 mm
- Piston Size: Standard Size D
- Engine Type: 2-Stroke
- Ring Material: Steel
- Skirt Coating: Moly Coated
Important to know
This kit includes the piston, rings, wrist pin, and circlips. Please ensure compatibility with your specific engine model 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
01.4322.D
Piston Kit
Aluminum Alloy, Cast
Steel
Standard Size D
66,37 mm
Moly Coated
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.

