This kit includes both racing cams, super pistons, heavy duty valve springs, titanium retainers, and connecting rods. These are all Jun parts made specifically for the h22a Honda Prelude Vtec Motor. Anyone who knows Jun knows what this is capable of but if you have questions you can try Jun's web site or e-mail me. I did a lot or research on this kit so I should be able to answer most anything. Suffice to say it's a pretty bad a$$ kit. I'm selling it literally for what i paid for it (plus whatever it might cost to ship it). $3900. Like i said if you need anyother info ask, i don't mind answering