Motorcycle Engine Cylinder Kit Piston Overhaul Pads for TRX450 450 12100 HN0 A00 TRX450FM 2002 2004 TRX450S AM 1998 This engine cylinder kit is designed for use with specified TRX450 models and includes components necessary for a piston overhaul.The set contains a cylinder, piston, rings, gaskets, and related hardware required for reconditioning the engine.It fits models equipped with engine code 12100 HN0 A00 and is compatible with TRX450FM from 2002 to 2004 as well as the TRX450S AM from 1998.The parts are engineered to restore proper compression and performance during engine rebuilds.Installation requires standard mechanical tools and knowledge of engine assembly procedures. This product is an aftermarket solution.Brand names are mentioned only to clarify compatibility with specific models.