These are fake. I had real Genuine Nismo R-tune coilovers on my S14 and the build and quality was amazing. These are just painted and the "nismo" logo should be smaller and should be turned 90*. The logos on all Z and 240sx coilovers or even just the upgraded shocks have a small logo and go horizontal, not up and down like pictured.
I know a couple people who work at Nissan motorsports hq here in TN. Ive had them search many times for supsension for my b13. The only thing they sell shocks and struts wise is Koni red inserts and eibach pro kit springs. They dont even sell a nismo brand shock or springs for a b13.