The King Tony Piston Ring Compressor 57–125mm is a precision-engineered tool designed for the safe and accurate installation of piston rings during engine assembly or repair. Built for professional workshop use, this compressor ensures smooth insertion of pistons into engine cylinders without damaging the rings. Featuring a square adjustment key system, the compressor allows precise tightening and control, while the integrated clutch mechanism prevents over-expansion of the rings during installation. Its robust construction and wide adjustment range make it suitable for a variety of engine sizes. Compact, lightweight, and easy to operate, this piston ring compressor is an essential tool for mechanics, engine rebuilders, and automotive technicians.

• Adjustable range from 57–125mm
• Designed for safe piston ring compression
• Square key adjustment for precise control
• Built-in clutch prevents premature ring expansion
• Lightweight and easy to handle
• Durable construction for professional use
• Ideal for automotive engine rebuilds