LSM Racing valve seat pressure testers are the most versatile spring testers available.
These valve seat pressure testers are adjustable on head valve spring testers for various shaft-style and stud mount roller rocker systems.
They feature a 0-600 lb. gauge and come with adjustable shim kits, which enable adjustments to within .050 in. of rocker arm pivot length.
WARNING: These products may contain a chemical known to the state of California to cause cancer and birth defects or other reproductive harm. For more information, go to www.p65warnings.ca.gov. 