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Made in the USA
Bolt-On PerformanceMachine Shop
Now featuring, dual high-lift valve springs from PSI
(Performance Springs Inc.)
. PSI is a leading manufacturer of high performance valve springs since 1996.
Every PSI spring begins with wire that is made from the
highest quality Chrome-Silicon alloys. The
1200 Series builds on this by
employing advanced heat-treating operations. These heat treatments increase the
strength of the base materials. This increase in strength results in
improvement to the fatigue limit of the wire and better resistance to load
loss. These factors together allow the engine builder to push the valve train
set-up to the next level.For those looking to upgrade an existing set of heads, the CT-1225/CT-1225ML are direct replacements for the K-800 springs. They use the same retainers and have the same spring pocket O.D.Sold in sets of 8. Also available, the CT-1225ML with Max Life Surface Preparation.
CT-1225 Springs are available as a performance option when you purchase a set of Competition Eliminator Cylinder Heads. The use of our 10 degree Valve Spring Retainers is recommended.