Proform Head-On Valve Spring Compressor Bolt-On Aluminum Purple Anodize - GM LS-Series Competition Engineering allows testing of springs with

allows testing of springs with higher spring pressures

bolt-on aluminum plate seals oil passage on rear main cap when dry sump systems are used

that allows you to quickly build a base tune for any LS engine

Clamps to the steering column and prevents legs from bumping together

Ideal for Use on Brakes

Proform Head-On Valve Spring Compressor Bolt-On Aluminum Purple Anodize - GM LS-Series Competition Engineering allows testing of springs withProduct Description: Valve Spring Compressor Head On Bolt On Aluminum Purple Anodized GM LS Series PROFORM invites racers to experience the strength, innovation, and power behind the PROFORM brand. PROFORM Parts (Specialty Auto Parts U. S. A., Inc.) is a leader in the High Performance Automotive Aftermarket by engineering and manufacturing creative products from intelligent concepts. Our goal is to provide the performance enthusiast with innovation,