KING TONY Piston Ring Compressor 100-175mm | 9AC175-40

The KING TONY 9AC175-40 is a piston ring compressor designed for pistons and cylinders within its specified 100mm to 175mm working range. During engine assembly, piston rings must be compressed evenly into their grooves so the piston can enter the cylinder bore without the rings catching on the cylinder edge. The compressor holds the rings securely around the piston while it is introduced into the bore, helping reduce the risk of ring damage and simplifying installation. Its larger working range makes it suitable for compatible larger-bore engine applications. It is a specialist automotive and engine-rebuilding tool for professional workshops, mechanics and engine assembly work.