40072M07700 Wiseco Std Piston Kit for Yamaha YZ250F 2012-2013 77.00mm 13.5:1 CR
40072M07700 Wiseco Std Piston Kit for Yamaha YZ250F 2012-2013 77.00mm 13.5:1 CR
Couldn't load pickup availability
Piston Kit for Yamaha YZ250F
This Wiseco Standard Piston Kit for Yamaha YZ250F is a 77.00mm forged piston assembly with a 13.5:1 compression ratio, supplied with rings, pin, and clips to rebuild the top end of the engine; it carries part number 40072M07700.
Overview
This Wiseco Standard Piston Kit for Yamaha YZ250F restores compression and piston-to-cylinder sealing on 2012 to 2013 models. Each piston kit for Yamaha YZ250F is machined to the original 77.00mm bore size and 13.5:1 compression ratio, making it a direct replacement for a worn or damaged piston. It suits riders and mechanics handling routine top-end rebuilds on the YZ250F motocross platform.
Built For Performance
- Forged piston construction for strength under high-rpm motocross loads
- 77.00mm standard bore diameter matches the original cylinder size
- 13.5:1 compression ratio for strong mid-range and top-end response
- Kit includes piston, rings, wrist pin, and circlips for a complete top-end refresh
- Wiseco part number 40072M07700 identifies the exact fitment
- Designed for the Yamaha YZ250F 250cc four-stroke engine
Fits These Machines
- for Yamaha YZ250F 2012
- for Yamaha YZ250F 2013
On-The-Job Use
- Top-end rebuilds after piston wear or loss of compression
- Motocross and off-road riding on the YZ250F
- Refresh during routine engine maintenance or race-season servicing
- Cylinder service when the bore remains within standard specification
Specs At A Glance
| Part Number(s) | 40072M07700 |
| Bore Size | 77.00mm |
| Compression Ratio | 13.5:1 |
| Piston Type | Standard bore, forged |
| Kit Contents | Piston, rings, wrist pin, circlips |
Good To Know
Q: Does this kit include the rings and pin? A: Yes, this Wiseco piston kit ships as a complete assembly with piston, rings, wrist pin, and circlips for the top-end rebuild.
Q: Can I fit this if my cylinder is worn? A: This is a standard 77.00mm bore piston, so the cylinder should be measured and honed or replated to spec before installation.
Slight variation in finish or dimensions may occur between production runs, and fit can depend on serial number, so confirm compatibility before ordering.
Get it between -
