Product description
The Prox Piston Kit For Yamaha WRF426 2001-2002 94.95 mm is part of the latest collection from Prox.
Features:
- Kit includes piston, rings, wrist pin and circlips
- Precision machined on state of the art CNC equipment
- Made with low expansion, low friction alloy
Specifications:
- Bore - Oversize Metric: Standard
- Bore - Oversize: Standard
- Bore Size: 95.00 mm
- Compression Ratio Imperial: 12.5
- Compression Ratio: 12.5
- Displacement: 426 cc
- Engine Type: 4-Stroke
- Piston Material: Aluminum Alloy
- Piston Size Metric: 94.95 mm
- Piston Size: 94.95 mm
- Product Name: Piston Kit
- Skirt Coating: Non-Coated
To fit:
- YAMAHA WR 426 F 2001 All Models
- YAMAHA WR 426 F 2002 All Models
- YAMAHA YZ 426 F 2000 American Models
- YAMAHA YZ 426 F 2000 European Models
- YAMAHA YZ 426 F 2001 American Models
- YAMAHA YZ 426 F 2001 European Models
- YAMAHA YZ 426 F 2002 American Models
- YAMAHA YZ 426 F 2002 European Models
Manufacturer part number: 01.2427.A
View all Prox. View all Parts and spares.
Contents
Your package will include the following:
- 1 X Prox Piston Kit For Yamaha WRF426 2001-2002 94.95 mm
To fit:
- YAMAHA WR 426 F 2001 All Models
- YAMAHA WR 426 F 2002 All Models
- YAMAHA YZ 426 F 2000 American Models
- YAMAHA YZ 426 F 2000 European Models
- YAMAHA YZ 426 F 2001 American Models
- YAMAHA YZ 426 F 2001 European Models
- YAMAHA YZ 426 F 2002 American Models
- YAMAHA YZ 426 F 2002 European Models

ProX is a Dutch brand specialising in high-quality replacement parts for motorcycles, motocross, ATVs, and other powersports vehicles. Their range includes pistons, connecting rods, clutch components, bearings, and valves, all manufactured to OEM standards. ProX parts are trusted worldwide for durability, precision, and performance, making them a go-to choice for riders.
Product description
The Prox Piston Kit For Yamaha WRF426 2001-2002 94.95 mm is part of the latest collection from Prox.
Features:
- Kit includes piston, rings, wrist pin and circlips
- Precision machined on state of the art CNC equipment
- Made with low expansion, low friction alloy
Specifications:
- Bore - Oversize Metric: Standard
- Bore - Oversize: Standard
- Bore Size: 95.00 mm
- Compression Ratio Imperial: 12.5
- Compression Ratio: 12.5
- Displacement: 426 cc
- Engine Type: 4-Stroke
- Piston Material: Aluminum Alloy
- Piston Size Metric: 94.95 mm
- Piston Size: 94.95 mm
- Product Name: Piston Kit
- Skirt Coating: Non-Coated
To fit:
- YAMAHA WR 426 F 2001 All Models
- YAMAHA WR 426 F 2002 All Models
- YAMAHA YZ 426 F 2000 American Models
- YAMAHA YZ 426 F 2000 European Models
- YAMAHA YZ 426 F 2001 American Models
- YAMAHA YZ 426 F 2001 European Models
- YAMAHA YZ 426 F 2002 American Models
- YAMAHA YZ 426 F 2002 European Models
Manufacturer part number: 01.2427.A
View all Prox. View all Parts and spares.
Contents
Your package will include the following:
- 1 X Prox Piston Kit For Yamaha WRF426 2001-2002 94.95 mm
To fit:
- YAMAHA WR 426 F 2001 All Models
- YAMAHA WR 426 F 2002 All Models
- YAMAHA YZ 426 F 2000 American Models
- YAMAHA YZ 426 F 2000 European Models
- YAMAHA YZ 426 F 2001 American Models
- YAMAHA YZ 426 F 2001 European Models
- YAMAHA YZ 426 F 2002 American Models
- YAMAHA YZ 426 F 2002 European Models

ProX is a Dutch brand specialising in high-quality replacement parts for motorcycles, motocross, ATVs, and other powersports vehicles. Their range includes pistons, connecting rods, clutch components, bearings, and valves, all manufactured to OEM standards. ProX parts are trusted worldwide for durability, precision, and performance, making them a go-to choice for riders.































