modified engine/race spec. for $95 (Mar 15 2015)

     These have been an exclusive offering from us for 15-years.  We personally install them in all engines with upgraded cam profiles to meet the increased demands of autocross and track cars.  They go well with our other exclusive offering of heavy duty push rods.

     These are the proper arrangement of OEM with inner and outer springs except BOTH HAVE INCREASED CAPACITY.
(We also have the Silicon Bronze Manganese guides and nickel stainless hardened valves.)

    You will find our price is on a par with those who offer only OEM quality springs made in who-knows-where.


Always responsive to ANY questions you may have. If there is anything specific you want, contact anytime at or 1-563-323-1017