Cylinder Works 50003-K01 13-15 KTM 350 SX-F 350cc Standard Bore Cylinder Kit 13.6:1 Comp. 88mmCylinder Works 50003 K01 13 15 KTM 350 SX F 350cc Standard Bore Cylinder Kit 13. 6: 1 Comp. 88mm Description Cylinder Works Standard Bore Cylinder Kit Fits Models 350 SX F (13 15) 350 XC F (13 15) Specs Uses Vertex #23831 Compression Ratio13. 6: 1 Cylinder Diameter88 mm Cylinder Kit Type: Standard Bore Displacement: 350 cc Engine Type: 4 Cycle Includes: Cylinder, Piston Kit, and Top End Gasket Kit