Prox Piston Kit - 250cc 4-stroke Engine
Prox Piston Kit - 250cc 4-stroke Engine
Available in stock (6)
-
Estimated delivery: Feb 05 - Feb 09
About this product
About this product
Upgrade your 4-stroke engine with the Prox Piston Kit, designed for superior performance and durability. This kit provides everything you need for a complete piston replacement, ensuring optimal engine function and longevity. Ideal for enthusiasts and professionals seeking reliable engine components.
Description
The Prox Piston Kit is meticulously crafted using state-of-the-art CNC equipment and forged from a low-expansion, low-friction aluminum alloy. This combination provides exceptional strength, reduced wear, and consistent performance. The piston's moly-coated skirt minimizes friction, enhancing engine efficiency and extending its lifespan. With a 78.00 mm bore size and a 12.9:1 compression ratio, this kit is specifically designed for 250cc 4-stroke engines, optimizing power delivery and throttle response. Replace your worn piston with this high-quality kit to restore your engine's original performance.
Features & highlights
- Complete kit includes piston, rings, wrist pin, and circlips for a comprehensive replacement.
- Precision CNC-machined for exacting tolerances and optimal fit.
- Forged aluminum alloy construction provides superior strength and heat resistance.
- Moly-coated skirt reduces friction and enhances engine efficiency.
- Designed for 250cc 4-stroke engines, ensuring optimal performance.
- Standard size B piston ensures compatibility and ease of installation.
Technical specifications
- Brand: Prox
- Part Number: 01.1338.B
- Engine Type: 4-Stroke
- Displacement: 250 cc
- Bore Size: 78.00 mm
- Piston Size: 77.98 mm
- Compression Ratio: 12.9:1
- Piston Material: Forged Aluminum Alloy
- Skirt Coating: Moly Coated
- Type: Standard Size B
Important to know
Ensure proper installation procedures are followed. 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
01.1338.B
Piston Kit
78,00 mm
12.9:1
250 cc
Aluminum Alloy, Forged
77.98 mm
Moly Coated
4-Stroke
Standard Size B
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.

