Vertex 24530B CastRacePistonKit Compatible With/Replacement ForKTM105SX ...Vertex 24530B Cast Race Piston Kit Compatible With/Replacement For KTM 105 SX 2004-2011 105 XC 2008-2009 STD Compression Ratio 52 mm Cylinder Diameter 112 cc Displacement 51.960mm Piston Diameter DB Electrical Whatever you drive we have the part for...more