I've seen these to have better spring rate than most major brands. Do they make any for imports. I've been seeing these on domestic cars. Supposedly stronger and more cost effective b/c top of the spring is smaller, utilizing a smaller valve spring retainer. Anyone have any info or thoughts.

 

i haven't seen any for Hondas
some domestics, use them to clear the rocker arms

 

Yes mostly for domestics, Ive seen a couple of honda springs that are single coil springs that are still stable up to high rpm but dont utilize a crazy seat pressure thats way overkill and starts becoming too much of a resistance to the cam rotating.

very expensive though.

-s