JEGS Performance Products 80521 - JEGS Premium Stud Mount Valve Spring Compressor

Changing valve springs at the track or with the cylinder head on the bench has become a simpler task. Install on either 3/8" or 7/16" studs with spring diameters ranging from 1" to 2". The 12" handle and rubber none slip grip to easily compress those high load race valve springs. For use with heads installed on the engine we recommend using the 555-80522 air hold adapter.