The GSC 5041 Includes a Beehive valve spring set, and Grade 5 Titanium
retainers You will use the OEM spring seat. This kit is capable of 11000+ RPMS,
with as much as 12.1mm lift cams (net valve lift max due to seal to bottom
retainer contact). This is a must have for anyone pushing the limits. If you
have had problems with valve float or throwing rocker arms this is the spring
set that will cure your problems for good.