【Bore】77mm. 【Model】YZ250F. Fit for Yamaha YZ250F 2001-2013. Kit is for standard bore size - 77.0 mm x 53.6 mm stroke, 16mm steel piston pin. If your cylinder blows through, the compression is too low, or even a piston seizure has occurred, then this kit is exactly the right thing for you.
This product would be ideal for Yamaha YZ250F owners looking to rebuild the top end of their 2001-2007 stock bore engine pistons.
