Bore: 95.00mmCompression: 12.6:1 CompressionSizing: Standard BoreContains all the necessary components for overboring or rebuilding your top end.Feature forged pistons, rings, wrist pins, circlips and top end gasket set.SPECIFICATIONS.Displacement: 450cc.Bore - Standard: 95.00mm.Bore - Actual: 95.00mm.Bore - Oversize: STD.Stroke: 63.4mm.Cylinders: 1.Compression Ratio - Actual: 12.6:1.Skirt Coating: ArmorGlide.ITEM CONTENTS.40073M09500 - compatible with KTM 450SX-F 13-17 12.6:1 CR.9500ZV - 95.00 mm Ring Set - 1.0 x 2.0mm.CW19 - ROUND WIRE PIN LOCKS 19MM (PAIR).S682 - PistonPin 19 x 45mm NonChromed TW.W6913 - TopEnd Gskt Kit compatible with KTM 450SX-F 12-16This item fits the following vehicle applications:compatible with Husqvarna FC450 2014-2017compatible with Husqvarna FX450 2017compatible with KTM 450 SX-F 2013-2018