KorewaJah

Before anything else, I could not find anything in the forums about aftermarket NA S4 rails and interchangeability.

I was looking at the FFE fuel rails, (https://fullfunctioneng.com/product/...3b-t-rail-set/), and noticed it said 13B-T. I haven't been able to find any rails that say anything other than 13B-T. Can the S4 Turbo rails fit on a S4 non-turbo? Primary and Secondary. If not, what options do I have?

rotary_fan

Does this thread help :

https://www.rx7club.com/2nd-generati...-rails-488602/

3rd post down

diabolical1

iTrader: (3)

welcome to the board.

the primary rails will interchange between N/A and T2 (at least, they will bolt to the housing), the secondaries will not interchange though.

what exactly are you trying to do?

KorewaJah

i just wanted to know what my options were for the future if I ever wanted/needed to get bigger rails and a better fuel system. I couldn't find anything aftermarket for an S4 non-turbo.