Does it fit your motorcycle?
Look it up by licence plate or VIN, or choose your model.
Confirmed compatible · Position:
This part doesn't fit your bike. See parts that fit
Fits most motorcycles
Not model-specific. Check dimensions and specifications in the description before ordering.
Chosen by size, not by model
The size is printed on the tyre sidewall, e.g. 120/70 ZR17, and in your registration document.
Checking fitment…
Fitment check unavailable
ProX 2-Stroke Cast Piston Kit - 39.85mm Bore - Size A - 01.7010.A
Product info
- Item number
- 09103155
- Manufacturer number
- 01.7010.A
- Position
Upgrade your engine's performance with the Prox Cast Piston Kit. Designed for reliability and optimized performance, this piston kit provides a stable and durable solution for your 2-stroke engine. Prox leverages advanced casting techniques and high-silicon aluminum alloy to deliver a piston that stands up to the demands of high-performance applications.
Description
The Prox Cast Piston Kit is engineered to provide exceptional stability and reduce thermal expansion, ensuring consistent performance under varying operating temperatures. Manufactured using gravity casting with a premium aluminum alloy containing approximately 18% silicon, this piston kit offers enhanced durability and wear resistance. The piston design closely mirrors OEM specifications, with subtle adjustments made by Prox engineers to optimize performance. Specifically designed for 2-stroke engines with both cast iron and Nikasil cylinder bores, Prox offers this piston in a standard size of 39.85mm, graded as A for precise fitment in Nikasil cylinders. Get the most out of your engine with this high-quality cast piston kit.
Features & highlights
- Enhanced stability and durability for reliable performance.
- Reduced thermal expansion thanks to high-silicon aluminum alloy construction.
- Designed for 2-stroke engines with cast iron and Nikasil cylinder bores.
- OEM-style design with performance-enhancing adjustments.
- Precision sizing (39.85mm) ensures optimal fit and function.
- Manufactured using gravity casting for superior material density.
Technical specifications
- Brand: Prox
- Part Number: 09103155
- Engine Type: 2-Stroke
- Piston Diameter: 39.85 mm
- Piston Material: Cast Aluminum Alloy
- Piston Size: Standard Size A
- Ring Material: Steel
Important to know
Ensure proper cylinder bore sizing and piston-to-cylinder clearance during installation. Professional installation is recommended.
- Brand
- PROX
- Vendor part number
- 01.7010.A
- Product name
- Piston Kit
- Piston material
- Aluminum Alloy, Cast
- Ring material
- Steel
- Piston size
- Standard Size A
- Piston diameter
- 39,85 mm
- Engine type
- 2-Stroke
- Units
- Kit
Free shipping to a GLS parcel shop or parcel box on orders over €200.
We ship your order as quickly as we can. Orders are usually packed within 24 hours on weekdays.
You have a 14-day right of return. Read more
4.8 out of 5 on TrustpilotRead our reviews →
Certified e-mærket web shop
