Athena A Piston Kit - P5F0770187008A Yamaha YZ 250 / WR 250 2014-2015 Brand_Works Connection has a 3-3/4" inner mounting

has a 3-3/4" inner mounting width and a 5-1/2" outer width

Five internal mesh pockets

96 kg/100 Links

All cables and lines are stainless steel

Athena A Piston Kit - P5F0770187008A Yamaha YZ 250 / WR 250 2014-2015 Brand_Works Connection has a 3-3/4" inner mountingFeatures Made of high performance aluminum alloy with high silicon content that guarantee the same reliability of the OE piston, while at the same time providing greater resistance and excellent performance The smooth profile ensures a regular flow and the perfect flame propagation The piston for 4 stroke Off Road motorcycles are made by reverse extrusion and produced numerical control (CNC) machines Piston rings create less friction with the cylinder