Thanks to the high quality materials and production results in the FX design, the FX55 has less weight and higher performance than most breakers in his size. The FX55 has less parts than the old model. With fewer parts moving, fewer parts will wear. This reduces maintenance costs and downtime. In the rare event that maintenance is needed, the FX series has been designed with replaceable cylinder liners which saves maintenance cost and downtime. This and the other FX features makes also the FX55 a superior hammer.