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 Piston Kit for Kawasaki KX 250 1992-2004
Product info
- Item number
- PX4308B
- Manufacturer number
- 01.4322.B
- Position
Restore peak engine performance to your Kawasaki KX 250 with the Prox Piston Kit. This high-quality, OEM-replacement piston kit is engineered to meet or exceed original factory specifications, ensuring reliable power and durability for your 1992-2004 model.
Description
Engineered specifically for the Kawasaki KX 250 1992-2004, this Prox motorcycle engine piston delivers exceptional reliability and performance. Each Prox KX 250 piston is meticulously manufactured in Japan from a premium high-silicon-content aluminum alloy. This advanced material composition ensures superior strength and heat resistance, crucial for the demanding environment of a 250cc dirt bike engine. Precision CNC-machining guarantees extremely close tolerances, providing an exact fit that minimizes wear and maximizes power output. Designed as a direct OEM replacement piston, this kit ensures your engine operates as intended, restoring lost compression and responsiveness. Whether you're rebuilding your top end for competitive racing or general trail riding, the Prox dirt bike piston kit offers the quality and peace of mind you need for a complete and reliable engine overhaul.
Features & Highlights
- Premium Japanese Manufacturing: Crafted in Japan to the highest quality standards, ensuring exceptional reliability and consistent performance for your engine.
- High-Silicon Aluminum Alloy: Cast from an advanced high-silicon content aluminum alloy, providing superior strength, excellent heat resistance, and extended piston lifespan under demanding conditions.
- Precision CNC-Machined: Each piston is CNC-machined to extremely close tolerances, guaranteeing an exact fit for optimal engine efficiency, reduced friction, and maximum power delivery.
- Complete OEM Replacement Kit: Includes the piston, ring kit, wrist pin, and circlips, offering all necessary components for a straightforward and comprehensive top-end rebuild.
- Meets or Exceeds OEM Specifications: Designed to match or surpass original equipment manufacturer specifications, ensuring performance and durability comparable to your bike's factory parts.
Technical Specifications
- Brand: Prox
- Part Number (MPN): PX4308B
- Product Type: Piston Kit
- Material: High-silicon content aluminum alloy
- Manufacturing Origin: Japan
- Kit Includes: Piston, Ring Kit, Wrist Pin, Circlips
- Vehicle Fitment: Kawasaki KX 250 (1992-2004)
- EAN: 0193564277930
- Vendor part number
- 01.4322.B
- Width
- 85 mm
- Height
- 80 mm
- Length
- 85 mm
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
