The JE Pistons single dish piston for Yamaha YZ426F is offered as an individual replacement for YZ426F engine work. This single piston features a dish crown as noted in the description and is intended to restore proper compression shape and bore tolerances in that application. Install it during a rebuild or repair of a YZ426F to return reliable combustion characteristics.
JE Pistons Yamaha YZ 426 F DISH Piston Single