Product description
The Prox Piston Kit For Yamaha YZF250 2008-2011 76.96 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: 77.00 mm
- Compression Ratio Imperial: 13.5
- Compression Ratio: 13.5
- Displacement: 250 cc
- Engine Type: 4-Stroke
- Piston Material: Aluminum Alloy
- Piston Size Metric: 76.96 mm
- Piston Size: 76.96 mm
- Product Name: Piston Kit
- Skirt Coating: Non-Coated
To fit:
- YAMAHA YZ 250 F 2008 American Models
- YAMAHA YZ 250 F 2008 European Models
- YAMAHA YZ 250 F 2009 American Models
- YAMAHA YZ 250 F 2009 European Models
- YAMAHA YZ 250 F 2010 American Models
- YAMAHA YZ 250 F 2010 European Models
- YAMAHA YZ 250 F 2011 American Models
- YAMAHA YZ 250 F 2011 European Models
Manufacturer part number: 01.2409.B
View all Prox. View all Parts and spares.
Contents
Your package will include the following:
- 1 X Prox Piston Kit For Yamaha YZF250 2008-2011 76.96 mm
To fit:
- YAMAHA YZ 250 F 2008 American Models
- YAMAHA YZ 250 F 2008 European Models
- YAMAHA YZ 250 F 2009 American Models
- YAMAHA YZ 250 F 2009 European Models
- YAMAHA YZ 250 F 2010 American Models
- YAMAHA YZ 250 F 2010 European Models
- YAMAHA YZ 250 F 2011 American Models
- YAMAHA YZ 250 F 2011 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 YZF250 2008-2011 76.96 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: 77.00 mm
- Compression Ratio Imperial: 13.5
- Compression Ratio: 13.5
- Displacement: 250 cc
- Engine Type: 4-Stroke
- Piston Material: Aluminum Alloy
- Piston Size Metric: 76.96 mm
- Piston Size: 76.96 mm
- Product Name: Piston Kit
- Skirt Coating: Non-Coated
To fit:
- YAMAHA YZ 250 F 2008 American Models
- YAMAHA YZ 250 F 2008 European Models
- YAMAHA YZ 250 F 2009 American Models
- YAMAHA YZ 250 F 2009 European Models
- YAMAHA YZ 250 F 2010 American Models
- YAMAHA YZ 250 F 2010 European Models
- YAMAHA YZ 250 F 2011 American Models
- YAMAHA YZ 250 F 2011 European Models
Manufacturer part number: 01.2409.B
View all Prox. View all Parts and spares.
Contents
Your package will include the following:
- 1 X Prox Piston Kit For Yamaha YZF250 2008-2011 76.96 mm
To fit:
- YAMAHA YZ 250 F 2008 American Models
- YAMAHA YZ 250 F 2008 European Models
- YAMAHA YZ 250 F 2009 American Models
- YAMAHA YZ 250 F 2009 European Models
- YAMAHA YZ 250 F 2010 American Models
- YAMAHA YZ 250 F 2010 European Models
- YAMAHA YZ 250 F 2011 American Models
- YAMAHA YZ 250 F 2011 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.































