Our High Performance Valve Springs are a dual-spring
interference design that is made from pure H-11 alloy. Each spring
is wound to meet our rate requirements and is shot-peened for
stress relief. The proprietary interference fit we use helps to
control harmonic resonance, that naturally occurs in springs,
across the entire rev range. In our dual-spring configuration,
should something happen to one spring, the other can prevent the
valve from dropping and causing catastrophic engine damage. Our VAC
springs are ready to be set to the ideal seat pressure for
performance camshafts from Cat, VAC, Schrick and others. You may
adjust spring seat thickness to adjust seat pressure.
These springs are fully compatible with both the OEM retainers
or our VAC Light weight Steel-alloy or Titanium retainers, found
Designed with the aid of a BMW Formula-1 engineer; these springs
are guaranteed to out perform the competitions valve springs at any
From Myles Wilson of Hobart, Australia on 9/16/2012.
From kilgojr of Hoover, Alabama on 4/17/2012.
is currently empty