Vertex Pistons 04-18 300 EXC/04-05 300 MXC/06-18 300 XC Cast Replica Piston Kit - 71.950mmExact fit A, B or C pistons match your cylinder bore perfectly to maximize power and performance, while reducing blow by and oil consumption. All piston kits include piston, rings, wrist pin and circlips required. This Part Fits: Year Make Model Submodel 2019 Husqvarna TE300i Base 2004 2007,2009 2018 KTM 300 EXC Base 2004 2005 KTM 300 MXC Base 2006 2019 KTM 300 XC Base 2006 2018 KTM 300 XC W Base 2015 2016 KTM 300 XC W Six Days Base