Prox Cast Piston Kit - Standard Size B
Prox Cast Piston Kit - Standard Size B
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Estimated delivery: Feb 05 - Feb 09
About this product
About this product
The Prox Cast Piston Kit provides a reliable and high-performing solution for your 4-stroke engine. Engineered with precision and manufactured using premium materials, this piston kit ensures optimal performance and longevity. Ideal for enthusiasts and professionals alike, the Prox piston delivers consistent results under demanding conditions.
Description
Prox cast pistons are designed to closely mirror OEM specifications, with enhancements implemented where opportunities for increased performance are identified. Manufactured using gravity casting and a high-silicon aluminum alloy (approximately 18% silicon), these pistons exhibit exceptional stability and reduced thermal expansion. The silicon content is crucial in maintaining consistent performance across a wide temperature range, preventing deformation and ensuring a precise fit within the cylinder. This kit is designed for 4-stroke engines. The piston diameter is 99.96 mm, and it is a standard size B. With a compression ratio of 10.0:1, this Prox piston kit optimizes your engine's combustion process for enhanced power and efficiency.
Features & highlights
- Designed to closely match OEM specifications with performance-enhancing adjustments.
- Manufactured using gravity casting for superior material density and structural integrity.
- High-silicon aluminum alloy construction reduces thermal expansion and ensures dimensional stability.
- Optimized for both cast iron and Nikasil cylinder bores, offering versatile compatibility.
- Available in a range of oversizes (A/B/C/D) for Nikasil cylinders, increasing in 0.01mm increments.
- Ensures optimal combustion with a compression ratio of 10.0:1.
Technical specifications
- Brand: PROX
- Product Name: Piston Kit
- Piston Material: Cast Aluminum Alloy
- Ring Material: Steel
- Engine Type: 4-Stroke
- Piston Diameter: 99.96 mm
- Piston Size: Standard Size B
- Compression Ratio: 10.0:1
- Units: Kit
Important to know
Please ensure compatibility with your specific engine model and cylinder bore type before installation. Verify piston-to-cylinder clearance 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
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
01.2664.B
Piston Kit
10,0:1
Aluminum Alloy, Cast
Steel
Standard Size B
99,96 mm
4-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.

