Prox Cast Piston Kit 66.38mm
Prox Cast Piston Kit 66.38mm
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Estimated delivery: Feb 05 - Feb 09
About this product
About this product
Maximize your two-stroke engine's performance and reliability with the Prox Cast Piston Kit. Engineered for durability and optimal thermal management, this piston kit is a direct replacement for OEM configurations, enhanced with design improvements for superior performance. Experience increased stability and reduced thermal expansion thanks to Prox's advanced casting process and high-silicon aluminum alloy.
Description
The Prox Cast Piston Kit is meticulously crafted using gravity casting with a premium aluminum alloy containing approximately 18% silicon. This silicon content significantly reduces thermal expansion, ensuring consistent performance and longevity. Suitable for both cast iron and Nikasil cylinder bores, Prox provides a range of oversizes (A/B/C/D) in 0.01mm increments for Nikasil cylinders, allowing for precise fitment and optimal compression. Each kit includes a moly-coated skirt for reduced friction and increased wear resistance. Upgrade your engine with Prox, and feel the difference in power and reliability.
Features & highlights
- Enhanced piston design optimized for increased performance.
- Manufactured using gravity casting with high-silicon aluminum alloy for superior stability.
- Reduced thermal expansion ensures consistent performance.
- Moly-coated skirt reduces friction and increases wear resistance.
- Available in standard and oversized options for precise fitment.
- Suitable for both cast iron and Nikasil cylinder bores.
Technical specifications
- Brand: Prox
- Part Number: 09101361
- Engine Type: 2-Stroke
- Piston Diameter: 66.38 mm
- Piston Material: Cast Aluminum Alloy
- Piston Size: Standard Size A
- Ring Material: Steel
- Skirt Coating: Moly Coated
Important to know
Please verify the correct piston size for your specific cylinder bore before installation. Oversized pistons are available for Nikasil cylinders, graded in A/B/C/D sizes with 0.01mm increments.
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
01.1315.A4
Piston Kit
Aluminum Alloy, Cast
Steel
Standard Size A
66,38 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.

