PISTON KIT 98-99 YZF400 92.00, PROX 01.2419.B, WRF400
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2-RING A Piston Kit 92.00 mm Bore STD Compression 12.5:1. ProX Piston Kits are supplied complete with piston rings, wrist pin, and circlips. ProX pistons are precision machined on the latest CNC equipment and use the same low-expansion, low-friction piston alloy all major Japanese engine manufacturers use. Uses an OEM style tin coating to assist the break-in process. Replacement parts PROX RING SET 02.2419.
- SKU
- 56-W4649.B.PX
- Brand
- Pro-X Racing
- Availability
- In Stock (3)
Fitments (13)
| Make | Model | Year |
|---|---|---|
| YAMAHA | WR 400F | 1998 |
| YAMAHA | WR 400F | 1999 |
| YAMAHA | WR 400F | 2000 |
| YAMAHA | WRF 400 | 1998 |
| YAMAHA | WRF 400 | 1999 |
| YAMAHA | WRF 400 | 2000 |
| YAMAHA | YZ 400F | 1998 |
| YAMAHA | YZ 400F | 1999 |
| YAMAHA | YZF 400 | 1998 |
| YAMAHA | YZF 400 | 1999 |
| YAMAHA | YZF 400 | 2000 |
| YAMAHA | YZF 450 | 1998 |
| YAMAHA | YZF 450 | 1999 |
- General Product Group
- Engine
- General Product Type
- Pistons & Kits
- General Size
- 92mm
- Variant Id
- 255809
FULL DESCRIPTION
ProX Piston Kit - High-Performance Engine Rebuild Component
This ProX Piston Kit is engineered for precision and durability, offering a complete solution for your engine rebuild needs. Designed with a 92.00 mm bore and a standard compression ratio of 12.5:1, this kit ensures optimal performance and reliability.
Each ProX Piston Kit is meticulously manufactured using the latest CNC equipment. The pistons are crafted from a low-expansion, low-friction alloy, mirroring the materials used by major Japanese engine manufacturers. This advanced alloy contributes to smoother operation and extended engine life.
For an easier and more effective break-in process, the pistons are treated with an OEM-style tin coating. This coating helps to reduce initial friction when you first start your machine, promoting a better seating of the piston rings.
Key Features:
- 2-Ring piston kit
- 92.00 mm Bore size
- Standard Compression Ratio: 12.5:1
- Includes piston rings, wrist pin, and circlips for a complete installation
- Precision machined on state-of-the-art CNC equipment
- Constructed from a low-expansion, low-friction piston alloy
- OEM-style tin coating assists in the break-in process
- Designed for direct replacement and optimal engine performance
This kit is a high-quality replacement part for your engine, ensuring that your machine runs at its best.
Replacement ring set available separately: PROX RING SET 02.2419.
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Check the fitment table on this page against your make, model and year. Not sure? Call or email us and we will check it for you before you order.
UK delivery is £4.99, or free on orders over £60. Orders ship within 3 working days, then delivery takes 2–4 business days. Delivery details
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