I searched and couldn't find anything on the forums on the ceramic apex seals that are usually on eBay and sold by Red Tail Racing. At $600 OBO they peak interest.

Does anyone have any experience or has seen any feedback somewhere on these?

Here is a link http://www.ebay.com/itm/New-13B-2mm-...8#ht_500wt_969

 

i hope someone has experience. their post states that they have been used in na bridgeports. if these seals are worth using it will solve my biggest debate on the new engine build. building a non turbo bridgeport with quad 50mm itbs from a gsxr 750. i dont want carbon seals and i question how long super seals could last turning 9500-10k rpm ut can't afford $1200 for a set of ceramics.

if these are any good then i can has ceramics and has money lol.

i think im going to try calling the company, it doesn't specify which 13b, fc/fd 13b's have a taller seal than the 13b renesis. it only says 13b. i'll try calling them.

 

They're sized for the Cosmo engine. Will not work in the Renesis.

 

So then they should fit my s4 with s5 rotors correct?