1090 Mini valve spring tester

The JIMS mini valve spring tester is a compact and versatile tool for any engine builder's workbench. It allows you to accurately test valve spring pressure up to 600 PSI, ensuring your valvetrain is set up correctly for your specific camshaft profile. This tester is designed for ease of use and can be operated in a bench vice, an arbor press, or even a drill press. Because it is a universal tool, it is a valuable addition to any workshop, whether you are working on a Sportster, a Big Twin, or a custom race engine. Accurate spring pressure is critical for preventing valve float and ensuring long-term engine reliability.